Extendable power plug

Abstract

This invention provides a retractable power plug that significantly reduces assembly difficulty and manufacturing costs, and prevents accidental operation. [Solution] The system includes a base case 1, a socket body 5, a screw, a trigger section, and a plug terminal. A drive assembly drives the linear motion of the socket body relative to the base case, and the trigger section works in cooperation with the screw's transmission section to extend and retract relative to the plug terminal. The plug assembly can be selectively extended according to demand and includes multiple plug groups to support power socket standards of different countries or regions, and features high integration, convenience, and safety.

Description

Technical Field

[0001] [Cross - Reference to Related Applications] This application claims priority to U.S. Patent Application No. 19308169, filed on August 22, 2025, with the title "Drive Shaft for a Retractable Power Plug", and all the contents of the above application and its amendments are incorporated herein by reference.

[0002] The present invention relates to the technical field of electrical connectors, and more specifically, to a retractable power plug.

Background Art

[0003] With the popularization of portable electronic devices such as smartphones, laptops, tablet computers, and power tools, their accompanying chargers and power adapters have become indispensable items for people's daily mobility. One of the core components of these chargers is the AC power plug for connecting to the commercial power supply.

[0004] Currently, the mainstream charger plugs on the market have many of their metal base pins (or plugs, also called pins) designed in a fixed - exposed manner. Such a design has significant drawbacks in the processes of transportation, storage, and post - use storage, such as the base pins being easily damaged, inconvenient to carry, and the risk of damage to items. To address the above problems, the industry has already proposed several solutions using retractable plugs to enhance portability and protection by housing the base pins inside a case. However, conventional retractable plug designs generally have a significant defect of complex structures. Such designs generally require multiple independent telescoping mechanisms (such as springs, buckles, sliders, linkages, etc.), complex locking devices, and precise guide structures to achieve the synchronous telescoping and reliable locking of single or multiple base pins. Such complexity leads to the following problems.

[0005] 1. The assembly process is complicated, increasing production difficulty and manufacturing costs.

[0006] 2. Reliability challenges: Too many moving parts and connection points increase the risk of potential mechanical failure, wear, and snagging, making it difficult to guarantee stability and durability over long-term use.

[0007] 3. A complex internal structure can occupy valuable internal space, which is detrimental to miniaturizing the charger. [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] This invention provides a retractable power plug to solve the problems proposed in the background art described above. [Means for solving the problem]

[0009] To achieve the above-mentioned objective of the invention, this invention employs the following technical approach.

[0010] This invention discloses a retractable power plug, which includes a socket body including plug terminals that can move linearly relative to the socket body, a base case having a plurality of through holes on one side to allow the socket body to protrude to an extended state, and a drive assembly that selectively connects to the socket body and can drive the socket body to move between a retracted configuration and an extended configuration. In this configuration, the plug terminals are housed within the base case, and in the deployed configuration, the socket body, when driven to the deployed position, protrudes outside the base case through the corresponding through-hole and can be coupled to an external power socket. The socket body is configured such that, during movement between a retracted configuration and an unfolded configuration, the plug terminals are retractably housed at least partially within the socket body, and when the drive assembly is triggered and drives the socket body to move relative to the base case, the telescopic device drives the plug terminals to move linearly in an extensional or retractal motion relative to the socket body in response to the relative motion between the socket body and the base case. [Effects of the Invention]

[0011] The beneficial effects of this invention compared to the prior art are as follows:

[0012] 1. A single rotation of the drive ring synchronously drives the vertical movement of the socket body and the horizontal extension and retraction of the plug terminals, replacing conventional multi-stage independent mechanisms (e.g., combinations of springs, buckles, and linkages), reducing the number of parts, and significantly lowering assembly difficulty and manufacturing costs.

[0013] 2. The vertical movement of the socket body is forcibly converted into the extension and retraction movement of the plug terminals through the cooperation of the fixed rod and the helical groove of the bidirectional screw, without the need for additional drive elements. The limiting stopper engages with the limiting notch to provide locking in position and prevent accidental operation. [Brief explanation of the drawing]

[0014] The specification and drawings, which constitute part of this application, are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions thereof are used to interpret the present invention and do not constitute an unreasonable limitation to the present invention. In the drawings, [Figure 1] This is a schematic diagram of the disassembled plug according to the present invention. [Figure 2] This is a schematic diagram of the plug according to the present invention from a different angle. [Figure 3] This is an enlarged view of point A shown in Figure 2. [Figure 4] This is a schematic diagram of a part of the plug structure of the present invention. [Figure 5] It is a sectional view taken along A-A shown in FIG. 4. [Figure 6] It is an enlarged view at B shown in FIG. 5. [Figure 7] It is a schematic diagram of a partial structure of the plug of the present invention. [Figure 8] It is a sectional view taken along B-B shown in FIG. 7. [Figure 9] It is an enlarged view at C shown in FIG. 8. [Figure 10] It is a schematic diagram of a partial structure of the plug of the present invention. [Figure 11] It is a schematic exploded view of the socket body shown in FIG. 1. [Figure 12] It is a schematic exploded view of the socket body from another angle shown in FIG. 11. [Figure 13] It is a schematic diagram of the structure of the moving seat and the bidirectional screw shown in FIG. 2. [Figure 14] It is an enlarged view at D shown in FIG. 13. [Figure 15] It is an enlarged view at E shown in FIG. 13. [Figure 16] It is a schematic diagram of the structure of the bidirectional screw in FIG. 13. [Figure 17] It is a schematic diagram of the structure of the bidirectional screw from another angle in FIG. 16. [Figure 18] It is a schematic diagram of the structure in which the depths of the two sets of spiral grooves of the bidirectional screw in the present invention are the same. [Figure 19] It is a diagram showing the usage state of the socket of the present invention. [Figure 20] It is a schematic diagram in which the lifting guide rail 22 in the present invention has a concave groove structure. [Figure 21] It is a schematic sectional view of the embodiment shown in FIG. 1. [Figure 22] It is a schematic exploded view of another embodiment of the present invention. [Figure 23] It is a schematic diagram of the structure of a plurality of power plugs of the embodiment shown in FIG. 22. [Figure 24] It is a schematic diagram of the structure when the plug terminal of the embodiment shown in FIG. 23 is in use. [Figure 25]This is a local schematic diagram of portion F of the embodiment shown in Figure 24. [Figure 26] Figure 23 is a schematic diagram of the structure of the first additional pin in the embodiment shown in Figure 23 when it is in use. [Figure 27] Figure 23 is a schematic diagram of the structure when the second additional pin of the embodiment shown in Figure 23 is in use. [Figure 28] Figure 22 is a bottom view of the pin plate of the embodiment shown. [Figure 29] Figure 22 is a schematic perspective view of the conductive plate of the embodiment shown. [Figure 30] Figure 27 is a schematic diagram of the perforation structure in the embodiment shown. [Figure 31] Figure 22 is a schematic exploded view of the upper rotating cover and rotating ring of the embodiment shown. [Figure 32] Figure 22 shows the usage state of the example socket. [Figure 33] Figure 22 is a schematic perspective view of the through-hole in the embodiment shown. [Modes for carrying out the invention]

[0015] The following describes the technical method in the embodiments of the present invention clearly and completely, linking it with the drawings of the embodiments. Clearly, the embodiments described are partial embodiments of the present invention, not all embodiments. The description of at least one exemplary embodiment below is for illustrative purposes only and should not be used in any way as an arbitrary limitation on the present invention and its applications or use. All other embodiments derived based on the embodiments of the present invention without the creative effort of a person skilled in the art are all within the scope of the protection of the present invention.

[0016] It should be noted that the terminology used herein is solely for the purpose of describing modes for carrying out the invention and is not intended to limit the exemplary embodiments provided in this application. As used herein, unless otherwise clearly indicated in the context, the singular form is intended to include the plural form as well, and furthermore, when the terms “include” and / or “contain” are used herein, it should be understood that they indicate the presence of features, steps, operations, devices, assemblies and / or combinations thereof.

[0017] Unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions, and numerical values ​​described in these embodiments do not limit the scope of the present invention. At the same time, for the sake of ease of description, the sizes of the parts shown in the drawings are not depicted to actual scale. While technologies, methods, and apparatus known to the general articulate to the art may not be discussed in detail, it should be understood that, where appropriate, such technologies, methods, and apparatus should be considered part of the license specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as illustrative and not limiting. Therefore, other examples of exemplary embodiments may have different values. Similar symbols and letters represent similar items in subsequent drawings; therefore, once an item is defined in one drawing, it is not necessary to discuss it further in subsequent drawings.

[0018] This invention belongs to the field of electrical connector technology and specifically relates to a retractable plug structure used in power adapters or chargers for electronic devices. This plug design is sophisticated and integrates functions such as rotational drive, linear lifting and lowering, extension and retraction of the internal plug, and automatic reset.

[0019] As shown in Figures 1, 2, and 3, this plug mainly includes a base case 1, a drive assembly, a fixing cover 4, a socket body 5, and a bottom cover 6.

[0020] The base case 1 is the basic framework for the plug 100. Its body consists of a base plate 11 and an annular side wall 12 extending upward from the edge of the base plate 11. The base plate 11 and the side wall 12 together form a housing cavity 13 that encloses the plug and opens at the top. An annular slide rail 131 is provided on the inner surface of the base plate 11 facing the housing cavity 13. A bottom cover 6 is positioned on the side of the base plate 11 away from the housing cavity 13. The bottom cover 6 is used to seal the base plate 11 and enhance the overall aesthetic appearance.

[0021] The drive assembly includes a drive ring 2 and an upper rotating cover 3. The drive ring 2 is an annular component that is installed within the housing cavity 13. Under normal conditions, the drive ring 2 seats on the annular slide rail 131 of the base plate 11, relying on its own gravity. Driven by an external force, the drive ring 2 can rotate smoothly in the circumferential direction along this annular slide rail 131, which limits the trajectory of motion of the drive ring 2.

[0022] Referring to Figures 4, 5, 6, and 21, the opening end of the housing cavity 13 of the base case 1 is covered by a rotatable upper rotating cover 3. The end face of the upper rotating cover 3 facing the drive ring 2 is provided with a plurality of first engaging protrusions 31 (shown in Figure 6) distributed at equal intervals. Accordingly, the end face of the drive ring 2 facing the upper rotating cover 3 is provided with a plurality of first engaging grooves 21 distributed at equal intervals along the circumferential direction, matching the first engaging protrusions 31. By precisely embedding the first engaging protrusions 31 of the upper rotating cover 3 into the first engaging grooves 21 of the drive ring 2, a reliable connection and torque transmission between the two can be achieved. With this connection method, the user can directly and synchronously drive and rotate the lower drive ring 2 simply by rotating the upper rotating cover 3. Note that the number of first engaging grooves 21 and first engaging protrusions 31 does not necessarily have to be multiple; in a particular design, only one first engaging groove 21 and one corresponding first engaging protrusion 31 may be installed. A secure connection and synchronous rotation function are achieved between the upper rotating cover 3 and the drive ring 2 by the fitting of a single projection and groove. In some embodiments, the drive ring 2 and the upper rotating cover 3 may be designed to be manufactured as a single, indivisible whole component, and in some other embodiments, the drive ring 2 and the upper rotating cover 3 may be connected via fasteners. For example, fasteners such as bolts and screws may be used to lock and secure the upper rotating cover 3 and the drive ring 2, which facilitates assembly, disassembly, and maintenance, but requires that the corresponding mounting hole positions be designed in the component.

[0023] A circular central hole 32 is provided in the center of the upper rotating cover 3, and the fixed cover 4 is assembled within this central hole 32, with its shape conforming to the central hole 32. An upper limiting flange 33 is provided around the inner wall of the central hole 32, and a corresponding lower limiting flange 42 is provided around the outer circumference of the fixed cover 4. This lower limiting flange 42 is located above the upper limiting flange 33 (i.e., on the side away from the drive ring 2) and abuts against the upper limiting flange 33. A central fixing shaft 41 extends inward toward the housing cavity 13 of the fixed cover 4. This central fixing shaft 41 passes through the housing cavity 13, and its end is fixed and connected to the base plate 11 of the base case 1 by bolts. The fixing of the central fixing shaft 41, combined with the abutment cooperation of the lower limiting flange 42 and the upper limiting flange 33, jointly provides axial support for the synchronous rotation of the upper rotating cover 3 and the drive ring 2. This structure allows the upper rotating cover 3 to rotate freely relative to the fixed cover 4, while the lower limiting flange 42 and upper limiting flange 33, which abut each other, effectively limit the axial displacement of the upper rotating cover 3. The bolts pass through the base plate 11 of the base case 1 and are screw-connected to the end of the central fixed shaft 41. The heads of the bolts are located on the outside, away from the housing cavity 13 of the base plate 11, and the bottom cover 6 shields the heads of these bolts and seals the base plate 11 to enhance the aesthetic appearance.

[0024] Referring to Figures 7, 8, 9, and 10 together, The socket body 5 is movably installed within the housing cavity 13. A socket extension hole 43 is provided on the fixed cover 4 to match the shape and size of the socket body 5. In this embodiment, the socket body 5 is configured to either extend to the outside through the socket extension hole 43 or retract into the housing cavity 13.

[0025] Specifically, a first drive slider 51 is fixedly mounted on the outside of the socket body 5. A specific arc-shaped lifting guide rail 22 is installed on the inner wall of the drive ring 2, that is, the side closer to the socket body 5. The first drive slider 51 contacts the arc-shaped wall surface of this lifting guide rail 22. When the drive ring 2 is rotated by the upper rotating cover 3, the arc-shaped wall surface of the lifting guide rail 22 acts on the first drive slider 51, moving the socket body 5 along a predetermined direction (vertical in this embodiment). At this time, the socket body 5 can pass through the socket extension hole 43 and protrude to the outside. As shown in Figure 20, in some embodiments, the lifting guide rail 22 may be designed as a groove structure. In this case, the first drive slider 51 acts on the inner wall of the groove (i.e., the arc-shaped wall surface of the lifting guide rail 22), and similarly drives the socket body 5 to move along a predetermined direction. This structure allows the socket body 5 to protrude when rotated in the forward direction, and also allows the socket body 5 to be driven to retract into the housing cavity 13 when the upper rotating cover 3 is rotated in the reverse direction. In some other embodiments, multiple sets of head-and-tail connecting lifting guide rails 22 may be installed on the inner wall of the drive ring 2. In this way, by continuously rotating the upper rotating cover 3 along the same direction, the socket body 5 can be made to perform a reciprocating motion of protrusion and retraction along a predetermined motion trajectory.

[0026] To ensure that the socket body 5 moves along a precise linear vertical movement trajectory within the housing cavity 13, at least one guide rod 8 is installed within the cavity. Both ends of this guide rod 8 are fixed to the inner surface of the fixed cover 4 and to the base plate 11 of the base case 1, respectively, thereby establishing a solid vertical guide reference within the housing cavity 13. A guide sleeve ring 52 is fixedly mounted on the socket body 5, and this guide sleeve ring 52 is precisely fitted onto the guide rod 8. When the socket body 5 moves up and down, the guide sleeve ring 52 slides smoothly along the longitudinal direction of the guide rod 8, effectively restricting the movement path of the socket body 5 and preventing displacement or rotation. In addition, there are many methods of fixing the guide rod 8 within the housing cavity 13. In some embodiments, both ends of the guide rod 8 are fastened to the fixing cover 4 and the base plate 11 with bolts to ensure secure fixation. In some other embodiments, positioning grooves are provided on the inner surface of the fixing cover 4 facing the base plate 11 and on the upper surface of the base plate 11 facing the fixing cover 4. When installing, the ends of the guide rod 8 are fitted into these corresponding positioning grooves, thereby ensuring a firm attachment within the housing cavity 13.

[0027] To precisely control the vertical stroke and final position (when the socket body 5 is fully extended or fully retracted) of the socket body 5 and to limit the rotation angle of the drive ring 2, at least one limiting stopper 132 is installed on the annular slide rail 131 of the base case 1, and accordingly, a matching limiting notch 23 is opened at the bottom of the drive ring 2. When the user rotates the drive ring 2 to a preset angle, for example, to the endpoint position where the corresponding socket body 5 is fully extended or fully retracted, the limiting stopper 132 is embedded in the limiting notch 23, forming a mating contact. This mating state mechanically prevents continuous rotation of the drive ring 2 by effectively locking the relative position between the drive ring 2 and the base case 1, ensuring that the socket body 5 arrives precisely at the set position and is maintained stably. It should be noted that when the limiting stopper 132 is in the limiting notch 23, the user can disengage the limiting stopper 132 from the limiting notch 23 by applying only a slightly larger rotational force to the drive ring 2. Once released, the drive ring 2 can be restored to free rotation, allowing the user to adjust the angle and control the stroke again. This design clearly positions the end point of the stroke while maintaining operational flexibility.

[0028] A first fixing rod 9 is installed inside the base case 1. One end of the first fixing rod 9 is fixed to the side of the fixing cover 4 closest to the housing cavity 13. A slide bush 53 is fixed to the outer wall of the socket body 5. This slide bush 53 is precisely fitted on the first fixing rod 9 and slides along its axial direction. A return spring 68 is fitted on the first fixing rod 9 between the slide bush 53 and the fixing cover 4. When the socket body 5 needs to protrude outward, its outer slide bush 53 moves with it along the first fixing rod 9. This movement process compresses the return spring 68 located between the slide bush 53 and the fixing cover 4, accumulating elastic potential energy in the return spring 68. The protruding stroke of the socket body 5 is ultimately precisely limited by a limiting stopper 132. When the socket body 5 reaches the fully protruding position and is blocked by the limiting stopper 132, the return spring 68 is in its set compressed state and ready to always provide a reset force. When it is necessary to retract the socket body 5 into the housing cavity 13, it is only necessary to release its drive constraint. At this time, the compressed return spring 68 quickly releases its stored elastic potential energy, generating a restoring force. This restoring force acts directly on the slide bush 53, moving the slide bush 53 along the first fixing rod 9 toward the base plate 11. Since the slide bush 53 is fixed on the socket body 5, the restoring force of the return spring 68 effectively retracts the entire socket body 5 smoothly and reliably into the housing cavity 13 of the base case 1. This design of the return spring 68, which assists in resetting, greatly simplifies user operation and ensures that the socket body 5 can return automatically and smoothly.

[0029] Referring to Figures 11, 12, 13, 14, 15, 16, 17, and 18 together, Specifically, the socket body 5 includes a main case 54 and an extension mechanism. The main case 54 includes an upper case 541 and a lower case 542. The extension mechanism includes a trigger portion fixedly mounted on the base case 1 and a bidirectional screw 61 rotatably installed inside the socket body 5. A storage space 55 is provided inside the main case 54, and two first through holes 56 are provided at the top of the main case 54. A movable seat 57 and two sets of plug terminals 58 are arranged inside the storage space 55. The plug terminals 58 are used to supply power by contacting an external power source, and their positions correspond to the two first through holes 56, respectively.

[0030] The bidirectional screw 61 is rotatably mounted inside the housing space 55, and both ends of the bidirectional screw 61 are supported on the inner wall of the housing space 55 by bearings or other movable connection methods, and are rotatable about its axis. A second through hole 60 is provided on the movable seat 57, and the bidirectional screw 61 passes through the second through hole 60 of the movable seat 57, and its longitudinal direction defines the direction of movement of the socket body 5. The bidirectional screw 61 includes a first transmission section and a second transmission section. Specifically, a specially structured helical chute is machined on the outer circumference of the bidirectional screw 61. More precisely, the bidirectional screw 61 includes a shaft 69, which constitutes the main body of the bidirectional screw and has a cylindrical or substantially cylindrical basic outline. A first transmission section and a second transmission section are installed on the outer cylindrical surface of the shaft 69. The first and second transmission sections are preferably a first helical chute 63 and a second helical chute 65 machined along the axial direction of the outer cylindrical surface of the shaft 69 (i.e., the FF direction shown in Figure 17). The orthographic projections of the screws of the first helical chute 63 and the second helical chute 65 in the same circumferential direction (generally a view perpendicular to the axial direction) are arranged to intersect each other, and a transition groove segment 70 is formed at the projection intersection. In the first and second helical chutes, the edges where their inner walls intersect the bottom wall are both chamfered to ensure a smooth transition of the internal outlines of the first helical chute 63 and the second helical chute 65.

[0031] At both ends of the shaft 69, a pair of connecting members 71 are provided so that the entire bidirectional screw 61 can be securely and rotatably mounted on a fixed socket body, allowing the bidirectional screw 61 to rotate freely around its own axis (i.e., the axial direction of the shaft 69). These two pairs of connecting members 71 constitute the rotational support points of the bidirectional screw 61.

[0032] The first pair of connecting members is located at one end of the shaft 69. This pair of connecting members 71 is designed in a rod shape, and its notable feature is that its cross-sectional area gradually decreases along the direction away from the center of the shaft 69, forming a structure similar to a tapered or stepped shaft. Such a design may be useful for stress distribution, weight reduction, facilitating bearing insertion, or meeting certain spatial constraints. The second pair of connecting members is located at the other end of the shaft 69. This pair of connecting members 71 is also a rod-shaped structure. A single pivot groove 72 is machined into its end face away from the shaft 69. The function of this pivot groove 72 is to transmit torque (drive the rotation of the bidirectional screw 61) or to achieve axial restriction, and to accommodate and position a single pivot pin, snap ring, or drive key to ensure that the rotational motion of the screw 61 in the socket body is precisely controlled and transmitted.

[0033] The socket body 5 is mounted in the housing cavity 13 of the base case 1. A second fixing rod 10 is fixed to the base plate 11 of the base case 1, which extends upward, with one end passing through the bottom of the main body case 54 and deeply entering the housing space 55. A trigger portion is fixed to the end of the second fixing rod 10 located in the housing space 55, and in this embodiment, the trigger portion is a first contact block 62. The first contact block 62 includes a housing portion 66 and a contact portion 67, the shape of which the housing portion 66 is precisely matched to the inner cavity of the first helical chute 63 and is embedded in the first helical chute 63. This ensures that the first helical chute 63 can effectively transmit motion to the bidirectional screw 61, and the side of the contact portion 67 that is located in the center of the housing portion 66 facing the bidirectional screw 61 is designed to be a curved surface that is recessed inward. This curved surface contacts the bottom end surface of the first helical chute 63, significantly improving the stability and uniformity of the force received during the rotation of the bidirectional screw 61, and reducing vibration and wear. Furthermore, by setting the depth of the groove in the first helical chute to be greater than or equal to the depth of the groove in the second helical chute, it is possible to prevent the first contact block 62 from detaching from the first helical chute and entering the second helical chute as it moves along the first helical chute.

[0034] A second contact block 64 is installed on the inner wall of the second through-hole 60 of the movable seat 57. The second contact block 64 is designed as an arc-shaped strip and is embedded in the second helical chute 65 on the outer circumference of the bidirectional screw 61. The position of the second contact block 64 on the movable seat 57 may be customized according to actual production needs; for example, the second contact block 64 may be installed on the side wall of the movable seat 57.

[0035] When the user rotates the upper rotating cover 3 and the drive ring 2, the entire socket body 5 moves relative to the base case 1. At this time, the second fixing rod 10 and its first contact block 62, which are fixed on the base case 1, remain fixed. As the socket body 5 moves, the first contact block 62, which is embedded in the first helical chute 63, moves guided by the first helical chute 63 (helical groove). This movement causes the bidirectional screw 61 to rotate around its axis.

[0036] As the bidirectional screw 61 rotates, the second contact block 64, fixed on the movable seat 57, is embedded in the second helical chute 65. Thus, the second contact block 64 moves guided by the second helical chute 65 (which is also a helical groove and is designed to work in conjunction with the first helical chute 63). This ultimately drives the second contact block 64 and the entire movable seat 57 to move linearly along the longitudinal direction of the bidirectional screw 61. The linear motion of the movable seat 57 synchronously operates the two sets of plug terminals 58 on it, enabling the plug terminals 58 to protrude to the power supply position or retract to the storage position, allowing them to precisely align and pass through the first through-hole 56 at the top of the main body case 54.

[0037] Specifically, a core circuit board (not shown) is placed inside the housing cavity 13. A charging connector (not shown) is mounted at a specific location on this circuit board. To facilitate external connections, openings are precisely cut at the corresponding locations of the charging connector on the base plate 11 and bottom cover 6 of the base case 1. By connecting the plug to an external power socket via its plug terminals 58, the included charging equipment can be inserted through the openings on the base plate 11 and bottom cover 6, and by forming a physical and electrical connection with the charging connector on the circuit board, external power can be introduced into the equipment to provide power.

[0038] Referring to Figure 19, the operation of this plug 100 is an intuitive rotary drive process, which enables the overall raising and lowering of the socket body 5 and the automatic extension and retraction of the internal plug terminals 58.

[0039] When using: Step 1: Rotate the top cover --- The user holds the top rotating cover 3 and rotates it clockwise (or counterclockwise).

[0040] Step 2: Interlocking of the drive ring 2 --- The first engaging projection 31 at the bottom of the upper rotating cover 3 rotates the drive ring 2 that it engages with in a synchronous manner.

[0041] Step 3: Raising and lowering the socket body 5 --- The lifting guide rail 22 on the inner wall of the drive ring 2 acts on the first drive slider 51 embedded therein, converting rotational motion into linear motion, propelling the entire socket body 5 to overcome the resistance of the return spring 68 and move upward along the guide rod 8. During this process, the return spring 68 is compressed and energy is stored. Step 4: Driving the rotation of the bidirectional screw 61 --- As the entire socket body 5 moves upward, the second fixing rod 10 fixed to the base plate 11 and the first contact block 62 at its end move downward relative to the moving socket body 5. The first contact block 62 moves along the first helical chute 63 on the bidirectional screw 61, and the helical structure of the chute causes the bidirectional screw 61 to rotate around its axis.

[0042] Step 5: Protrusion of plug terminals 58 --- The rotational motion of the bidirectional screw 61 is converted into linear motion along the screw axis direction (i.e., vertically upward) of the movable seat 57 by the cooperation of its second helical chute 65 and the second contact block 64 on the movable seat 57. The movable seat 57 moves the two sets of plug terminals 58 on it upward in synchronous motion.

[0043] Step 6: Locking in Position --- When the socket body 5 rises to the position where it is fully protruding, the limiting notch 23 at the bottom of the drive ring 2 engages with the limiting stopper 132 on the annular slide rail 131 of the base case 1, creating a clear sense of position and preventing the drive ring 2 from continuing to rotate. At this time, the plug terminals 58 have also moved to the correct position, passing through the first through-hole 56 at the top of the main body case 54, and are ready to be inserted into the power socket. At this point, the socket body 5 is fully protruding and locked, and the internal plug terminals 58 are fully protruding.

[0044] When stored: Step 1: Unlock and rotate the top cover --- The user applies a slightly larger rotational force to the top rotating cover 3 so that the limiting notch 23 of the drive ring 2 overcomes the obstruction of the limiting stopper 132 and disengages from the fitted state. Then, rotate the top rotating cover 3 in the opposite or same direction as when it was extended.

[0045] Step 2: Interlocking the drive ring 2 --- The upper rotating cover 3 rotates the drive ring 2.

[0046] Step 3: Raising and lowering the socket body 5 --- The compressed return spring 68 releases its stored energy, generating a downward restoring force that acts on the slide bush 53, causing the entire socket body 5 to retract smoothly and quickly into the housing cavity 13 of the base case 1 along the guide rod 8.

[0047] Step 4: Drive the bidirectional screw 61 to rotate in the opposite direction --- As the entire socket body 5 retracts and moves downward, the second fixing rod 10 fixed to the base plate 11 and the first contact block 62 at its end move upward relative to the downward-moving socket body 5. The first contact block 62 moves in the opposite direction along the first helical chute 63, causing the bidirectional screw 61 to rotate in the opposite direction.

[0048] Step 5: Retraction of plug terminal 58 --- The reverse rotation of the bidirectional screw 61 drives the movable seat 57 and plug terminal 58 to retract into the main body case 54 along the screw axis direction (i.e., vertically downward) through the cooperation of the second helical chute 65 and the second contact block 64.

[0049] Step 6: Locking in Position --- When the socket body 5 is fully retracted into the housing cavity 13, another or identical limiting notch 23 at the bottom of the drive ring 2 rotates to another position and engages with the corresponding limiting stopper 132, locking the position again. At this point, the socket body 5 is fully concealed, and the plug terminals 58 are also fully retracted and protected.

[0050] As shown in Figures 22 and 23, in another embodiment of the present invention, in order to enhance the scope of application and functional versatility of the plug, the socket body 5 and the plug terminals 58 mounted thereon can be expanded and configured into at least two independent power plug groups. Based on the basic structure, this solution allows for the flexible addition of multiple power plug groups of different standards according to specific usage needs, and can be simultaneously compatible with power socket standards of different countries or regions, such as US standards, UK standards, and European standards. The number of base pins, geometry, and external dimensions of each power plug group can all be customized according to the standardization norms of the target market or specific application scenarios. This design significantly enhances the versatility and scenario adaptability of a single plug product, allowing users to use it in different power supply environments without having to carry multiple dedicated adapters, greatly improving portability and ease of use.

[0051] Preferably, referring to Figures 23 and 33, this embodiment includes three sets of power plugs to achieve broad compatibility with power standards of different countries or regions. Preferably, a plurality of through holes 120 are provided on the side of the base case 1 facing the plug projection direction, each corresponding to a power plug group, through which the selected power plug group in the deployed state passes and protrudes to the outside of the base case 1. Specifically, in addition to the socket body 5 as the main body, a first additional pin 100 and a second additional pin 101 are further mounted side by side in the space of the housing cavity 13 between the drive ring 2 and the base plate 11. In this embodiment, the socket body 5 and plug terminals 58 may be configured as base pins conforming specifically to European national standards, the first additional pin 100 may be configured as base pins conforming specifically to British standards, and the second additional pin 101 may be configured as base pins conforming to Chinese national standards. Of course, all plug standards, including the socket body 5, can be flexibly selected and replaced according to the actual demand of the target market. This design allows a single power adapter to cover multiple major market socket standards, significantly increasing the product's versatility and user convenience when traveling.

[0052] Preferably, referring to Figures 23 and 28, in this embodiment, a conductor 102 is provided on the side of the base plate 11 closest to the socket body 5 to establish a unified electrical connection base. Specifically, a set of divided pin plate assemblies is provided between the conductor 102 and the upper socket body 5 and additional plugs for mounting and securing each plug group. This pin plate assembly includes a first pin plate 103 that extends along the bottom horizontal plane of the socket body 5 and is fixedly connected to it, a second pin plate 104 that is placed at the bottom of the first additional pin 100 to secure the plug, and a third pin plate 105 that is placed at the bottom of the second additional pin 101 to secure the plug. The three pin plates are independent of each other and located on substantially the same horizontal plane, and together they form a stable support plane. This segmented pin plate design allows each plug group to be independently and firmly supported, providing a reliable mechanical foundation for subsequent independent lifting and lowering movements, and ensuring structural stability and motion precision during the alternating extension and retraction of the multi-plug groups.

[0053] Specifically, referring to Figures 28, 31, and 32, the first pin plate 103, the second pin plate 104, and the third pin plate 105 employ a segmented design. The three are independent of each other and are arranged parallel to each other on the same horizontal plane. Their outer edges combine to form a substantially circular outline that fits the inner outline of the drive ring 2, thereby structurally matching the rotational drive space of the drive ring 2. Here, the first pin plate 103 is fixedly connected to the bottom of the socket body 5 by a bolt, ensuring the unity of the two during their lifting and lowering movements. In this embodiment, the first drive slider 51 and the first pin plate 103 are integrally molded, and a projection extends from the side of this pin plate toward the drive ring 2, stably embedding the first drive slider 51 into the lifting and lowering guide rail 22 inside the drive ring 2, facilitating the conversion of rotational motion into lifting and lowering power. Specifically, in this embodiment, an extended portion 117 extends from the upper rotating cover 3 toward the rotating ring, a recess 118 is formed on the extended portion 117, and a protruding portion 119 is integrally molded on the inner wall of the rotating ring 2. When the upper rotating cover 3 is attached to the rotating ring 2, the lifting guide rail 22 in this embodiment is defined and formed by the combination of the recess 118 and the protruding portion 119 on the inner wall of the rotating ring 2. At the same time, the lifting guide rail 22 may be formed by directly recessing it onto the inner wall of the rotating ring 2, depending on the user's needs.

[0054] In another embodiment of the present invention (not shown), in order to improve the interlocking accuracy between the drive ring 2 and the upper rotating cover 3, avoid loosening of the interlocking and deviation of the trajectory after long-term rotation, and ensure the accuracy of the lifting and lowering movement of the plug group, the structure in the original plan, which combines the extended portion 117 and recess 118 of the upper rotating cover 3 with the protruding portion 119 of the drive ring 2 to form a lifting and lowering guide rail 22 and realize interlocking, may be replaced with an interlocking structure of gears and gearing rings. Specifically, an annular gearing ring is fixedly attached to the side of the upper rotating cover 3 facing the drive ring 2, the axis of the gearing ring is aligned with the rotation axis of the upper rotating cover 3, and on the inner wall of the drive ring 2... The gears that mesh with the gear rings are fixedly mounted at the corresponding gear ring positions, the gear axis is parallel to the radial direction of the drive ring 2, and a lifting guide rail 22 is directly machined on the inner wall of the drive ring 2, eliminating the original extended portion 117 of the upper rotating cover 3 and the protruding portion 119 of the drive ring 2. When the upper rotating cover 3 rotates, the drive ring 2 rotates synchronously due to the meshing transmission between the gear rings and the gears. Furthermore, the lifting guide rail 22 drives the lifting motion of each plug group, and a positioning pin is installed at the connection point between the gears and the drive ring 2 to ensure that the gears are securely mounted and to avoid loosening during the transmission process. The function of this structure is to achieve precise synchronized interlocking between the upper rotating cover 3 and the drive ring 2 through the meshing transmission of gears and gear rings, avoiding problems such as increased gaps and misalignment that may appear after long-term use of the original structure, and reducing the number of parts and assembly deviations by directly machining the guide rail 22 on the drive ring 2. The beneficial effects are to improve the accuracy and reliability of the drive interlocking, to ensure that the lifting and lowering positions when switching plug groups are more accurate, to avoid problems such as plugs not being able to fully protrude or retract due to interlocking deviations, and to extend the service life of the interlocking mechanism and reduce production and assembly costs.

[0055] Referring to Figures 24 and 25, a first electrical connection plate 106 is further fixedly mounted on the socket body 5. This first electrical connection plate 106 and the plug terminals 58 inside the socket body 5 provide a highly reliable electrical connection and establish a preliminary interface for conductivity with the subsequent external power supply circuit. This split pin plate layout not only ensures that each plug group can be supported independently and firmly, but also provides a guide base for their selective and sequential upward and downward movement by the action of the drive ring 2.

[0056] Referring to Figures 20 and 26, the first additional pin 100 is fixedly mounted on the second pin plate 104 to achieve synchronous motion between the two. A second drive slider 107 is integrally molded on this second pin plate 104, and this slider extends inward toward the drive ring 2, thereby working precisely with the lifting guide rail 22 inside the drive ring 2 to efficiently convert the rotational motion of the drive ring 2 into the lifting driving force of the first additional pin 100. Specifically, the overall outline of the second pin plate 104 is designed to closely conform to the external shape of the socket body 5 and to circumferentially surround the outer circumference of the socket body 5 in a semi-enclosed configuration. This layout allows the second pin plate 104 and the first additional pin 100 on it to slide smoothly and stably along the longitudinal direction of the socket body 5, achieving orderly motion in a compact space. Furthermore, a second electrical connection plate 108 is mounted on the second pin plate 104, and this electrical connection plate and the first additional pin 100 are electrically connected. This design ensures that when the first additional pin 100 is driven to protrude to its operating position, it can reliably make contact with the second electrical connection plate 108 and the conductor 102 on the base plate 11, thereby establishing a stable power supply circuit and ensuring the continuity and safety of electrical energy transmission.

[0057] As shown in Figures 27 and 28, the second additional pin 101 is mounted on the third pin plate 105 in a manner that allows it to rotate along its own axial direction. This rotatable connection design allows the plug to be finely adjusted in angle as needed, enhancing its adaptability when inserted into different sockets. A third drive slider 109 is integrally molded on the third pin plate 105. This slider also extends inward toward the drive ring 2 and ensures that rotational driving force can be transmitted to the second additional pin 101 by effectively connecting with the lifting guide rail 22 (see Figure 20) inside the drive ring 2. At the same time, a third electrical connection plate 110 is further mounted on the third pin plate 105, and this electrical connection plate maintains a reliable electrical connection with the second additional pin 101. This layout ensures that when the second additional pin 101 is driven to protrude to the operating position, a complete power supply path can be established by forming a stable electrical contact via the third electrical connection plate 110 and the conductor 102 on the base plate 11.

[0058] Specifically, referring to Figures 27, 29, and 30, two conductive pillars 111 are further fixedly installed on the conductor 102, the conductive pillars 111 being installed perpendicular to the conductor 102 and parallel to the second additional pin, and a conductive plate 112 is fixedly provided at the end of the conductive pillar 111 away from the conductor 102, the conductive plate being provided with a first conductive interface 113, a second conductive interface 114, and a third conductive interface 115 which cooperate with the first electrical connection plate, the second electrical connection plate, and the third electrical connection plate, and when the plug terminal 58 of the socket body 5, the first additional pin 100, or the second additional pin 101 is driven to protrude to the operating position, it is used to establish a complete conductive path from the external power supply to the internal circuit of the device by achieving physical contact and electrical connection with the respective connected electrical connection plate. This centralized conductive interface design not only simplifies the internal circuit layout and improves the compactness of the structure, but also ensures the reliability and stability of electrical connections when switching between each plug group.

[0059] A hole 116 is provided at the position of the second additional pin 101 corresponding to the conductive pillar 111. Through this hole 116, the second additional pin 101 is fitted onto the conductive pillar 111 and is slidable along the longitudinal direction (i.e., its axial direction) of the conductive pillar 111. Thus, the conductive pillar 111 not only performs its conductive function but also provides a guiding function for the vertical movement of the second additional pin 101, ensuring that it maintains a vertical and stable trajectory during the protruding or retracting process, avoiding distortion or snagging, and providing accurate and reliable alignment and contact assurance to the third electrical connection plate 110 and the corresponding third conductive interface 115 on the conductive plate 112 above it.

[0060] In other embodiments of the present invention (not shown), in order to improve the reliability of the electrical connection between each electrical connection plate and the conductive plate and to avoid contact failure due to insertion and removal vibration, the rigid contact structure of the first electrical connection plate 106, the second electrical connection plate 108, the third electrical connection plate 110 and the conductive plate 112 in the original solution may be replaced with an elastic contact structure of elastic conductive sheets and conductive contacts. Specifically, a plurality of uniformly distributed elastic conductive sheets are fixed and attached to the side of the first electrical connection plate 106, the second electrical connection plate 108 and the third electrical connection plate 110 facing the conductive plate 112, respectively. The conductive sheet is made of a beryllium copper alloy material that has good conductivity and elastic recovery ability. Conductive contacts that fit the elastic conductive sheet are installed at positions corresponding to each electrical connection plate on the conductive plate 112. The surface of the conductive contacts is silver-plated to reduce contact resistance. Positioning guide poles are installed between each electrical connection plate and the conductive plate 112. The positioning guide poles are fixed on the conductive plate 112, and corresponding guide holes are made on the electrical connection plates to ensure that the elastic conductive sheet can accurately align the conductive contacts when the electrical connection plates are raised and lowered. The function of this structure is to maintain tight contact between the electrical connection plates and the conductive plate 112 at all times by utilizing the elastic recovery force of the elastic conductive sheet, compensating for gaps due to vibration or assembly deviations, reducing contact resistance with silver-plated conductive contacts and improving conductivity, and ensuring accurate contact positions with the positioning guide poles. The beneficial effects are to avoid contact failures due to vibration and insertion / removal, improve the stability and conductivity of electrical connections, extend the service life of electrical components, reduce energy consumption in the current transmission process, and improve the safety of product use.

[0061] In other embodiments of the present invention (not shown), the structure in the original plan, in which the conductive function and the guiding function are separated, the conductive pillar 111 is fitted onto the conductive pillar 111 via a hole 116 to avoid a decrease in conductive performance due to the conductive pillar 111 enduring vertical sliding friction over a long period of time, and the guiding accuracy of the vertical movement of the second additional pin 101 is improved, and the conductive pillar 111 is fitted with a guiding function that is compatible with both conductivity and guiding, may be replaced with a structure in which the guide rod cooperates with the guide sleeve and the conductive structure is installed independently, specifically, two independent guide rods are fixed parallel to each other on the side of the base plate 11 closer to the second additional pin 101, the guide rods are perpendicular to the base plate 11 and the corresponding position of the second additional pin 101 A guide sleeve that fits the guide rod is fixed and attached to the base plate 11, and a wear-resistant bush is installed on the inner wall of the guide sleeve. The second additional pin 101 is fitted onto the guide rod via the guide sleeve and can move smoothly up and down along the guide rod to achieve a guiding function. The conductive plate 112 on the original conductive pillar 111 is eliminated, and an elastic conductive contact is fixed and installed at the bottom of the third pin plate 105. A conductive sheet is fixed and installed at a position corresponding to the elastic conductive contact on the conductor 102 of the base plate 11. The elastic conductive contact is made of a copper alloy material and has a certain amount of expansion and contraction. During the up and down process of the second additional pin 101, the elastic conductive contact is always in close contact with the conductive sheet, ensuring a reliable electrical connection. The function of this structure is to separate the guiding function from the conductive function, with the guide rod specializing in the guiding action, avoiding damage to the conductive member due to friction, and ensuring the continuity of the electrical connection by compensating for minute displacement deviations during the lifting and lowering process through the design of the elastic conductive contacts. The beneficial effects are to improve the guiding accuracy of the lifting and lowering movement of the second additional pin 101, avoiding distortion and snagging, ensuring stable conductive performance, reducing contact failures due to wear of the conductive pillar 111, and extending the service life of the conductive member.

[0062] As shown in Figures 31 and 32, this embodiment selectively drives one of the power plugs to protrude or retract relative to the base case 1 through the cooperation between the driveable ring 2 and the upper rotating cover 3 during use.

[0063] Specifically, referring to Figures 24, 25, and 30, when the user needs to insert the plug terminal 58 inside the socket body 5 into use, the upper rotating cover 3 is rotated clockwise by approximately 45 degrees. At this time, the drive ring 2, which is linked to the upper rotating cover 3, rotates synchronously, and the lifting guide rail 22 inside it acts on the first drive slider 51 on the first pin plate 103, driving the first pin plate 103 and raising the entire socket body 5 fixed to it vertically. In this process, the second fixing rod 10, fixed on the base plate 11 of the base case 1, remains stationary, while the first contact block 62 at its end and the first helical chute 63 on the bidirectional screw 61 move relative to each other, rotating the bidirectional screw 61. This rotational motion is then converted into linear motion of the movable seat 57 through the cooperation of the second helical chute 65 and the second contact block 64 on the movable seat 57, thereby causing the two sets of plug terminals 58 mounted on the movable seat 57 to protrude synchronously from inside the socket body 5. Simultaneously, as the socket body 5 rises, the first electrical connection plate 106 fixed thereon also rises accordingly, making contact with the first conductive interface 113 on the conductive plate 112 and establishing an electrical connection. If the upper rotating cover 3 is then rotated clockwise by approximately 45 degrees, the socket body 5 and plug terminals 58 move completely outside the base case 1, and the first electrical connection plate 106 and the first conductive interface 113 reach a stable contact state. At this time, the plug terminals 58 fully protrude to the operating position and are already reliably in communication with the internal circuitry of the device through this conductive passage, making it a complete state where it can be inserted into an external power socket and powered normally.

[0064] As shown in Figures 26 and 30, when the user needs to switch to the first additional pin 100, the upper rotating cover 3 is continued to twist clockwise by approximately 45 degrees based on the above operation. The drive ring 2 continues to rotate accordingly, and the trajectory of the specially designed continuous lifting guide rail 22 inside it begins to act simultaneously on the first drive slider 51 and the second drive slider 107. Specifically, the guide rail drives the first drive slider 51, causing the first pin plate 103 and the fixed socket body 5 (along with the plug terminals 58 inside it) to move and retract synchronously into the base case 1, and at the same time, the guide rail drives the second drive slider 107, causing the second pin plate 104 and the first additional pin 100 fixed on it to rise vertically. During this process, as the socket body 5 moves downward, the first electrical connection plate 106 on it separates from the first conductive interface 113 on the conductive plate 112, and the circuit is interrupted. However, as the first additional pin 100 rises, the second electrical connection plate 108 on the second pin plate 104 gradually approaches the second conductive interface 114 on the conductive plate 112, preparing to make contact. As the upper rotating cover 3 is continued to twist approximately 45 degrees, the socket body 5 and plug terminals 58 are completely retracted into the base case 1, and the first additional pin 100 is fully exposed protruding from the outside of the base case 1. At this time, the second electrical connection plate 108 and the second conductive interface 114 are joined, achieving a reliable electrical connection, and the first additional pin 100 is in a standby state where it can be inserted into the corresponding standard power socket, conduction is established, and power can be supplied.

[0065] As shown in Figures 26 and 30, if the user needs to switch to the second additional pin 101, the upper rotating cover 3 is continued to twist clockwise by approximately 45 degrees based on the above operation. The continuous rotation of the drive ring 2 causes the trajectory segment of the continuous lifting guide rail 22 inside it to act simultaneously on the second drive slider 107 and the third drive slider 109. Specifically, the guide rail drives the second drive slider 107, moving the second pin plate 104 and the first additional pin 100 fixed thereon to begin retracting into the base case 1, and at the same time, the guide rail drives the third drive slider 109, causing the third pin plate 105 and the second additional pin 101 mounted thereon to rise vertically. In this process, as the first additional pin 100 moves downward, its second electrical connection plate 108 separates from the second conductive interface 114 on the conductive plate 112, and the circuit is interrupted. However, as the second additional pin 101 moves upward, the third electrical connection plate 110 on the third pin plate 105 gradually approaches the third conductive interface 115 on the conductive plate 112. If the upper rotating cover 3 is continued to be twisted approximately 45 degrees, the first additional pin 100 will be completely retracted into the base case 1, and the second additional pin 101 will be fully exposed protruding from the outside of the base case 1. At this time, the third electrical connection plate 110 and the third conductive interface 115 will be joined, achieving a reliable electrical connection, and the second additional pin 101 will be fully ready to be inserted into the corresponding standard power socket, conduction enabled, and power supplied.

[0066] As shown in Figure 30, when the user has finished using the device and needs to store all the plug assemblies, the upper rotating cover 3 is twisted clockwise approximately 90 degrees. At this stage, the first pin plate 103, the second pin plate 104, and the socket body 5 on which they sit, along with the first additional pin 100, have already been retracted. The lifting guide rail 22 on the inner wall of the drive ring 2 primarily drives the third drive slider 109, which is still protruding, to smoothly retract the third pin plate 105 and the second additional pin 101 on it into the base case 1. In this process, the third electrical connection plate 110 on the third pin plate 105 also lowers accordingly, completely separating it from the third conductive interface 115 on the conductive plate 112, thereby ensuring that the electrical connection of this circuit is disconnected. Finally, all moving members are stably reset to their initial storage positions, and the socket body 5, the first additional pin 100, and the second additional pin 101 are all safely retrieved into the housing cavity 13. This design, through a continuous rotational operation, completes the retrieval of the last protruding plug group and circuit isolation, restoring the product to a compact, safe, and electrically insulated fully stored state, effectively enhancing portability and safety of use.

[0067] Compared to conventional technologies, this invention achieves the following beneficial effects. First, through an innovative multi-plug group integrated design, this solution successfully accommodates at least two (preferably three) different national or regional power plug standards (e.g., European standard, British standard, national standard) in a single power adapter or charger. Users can conveniently switch between different standards with just a rotation, fundamentally solving the pain point of having to carry multiple dedicated adapters when traveling abroad or using electrical appliances from multiple countries, and greatly improving the versatility, portability, and user experience of the product.

[0068] Next, the "split pin plate-lifting guide rail 22" interlocking mechanism, designed to achieve the above functions, ensures that the multi-plug group operates orderly and reliably within a compact space. Three independent pin plates and their integrally molded drive sliders work in cooperation with the continuous lifting guide rail 22 on the inner wall of the drive ring to convert a single rotational input into linear motion in which different plug groups sequentially extend and retract. Such a mechanical design not only ensures that the motion trajectories are precise and do not interfere with each other, but also results in a compact and efficient structure, achieving a harmonious unity of multi-functional integration and a miniaturized appearance.

[0069] Thirdly, the electrical connection design of this solution is original and reliable. By installing unified conductors, conductive plates, and independent electrical connection plates and conductive interfaces, any one plug group is driven to protrude to the operating position, and at the same time, the corresponding electrical connection plate automatically achieves precise alignment with the corresponding interface on the conductive plate, thereby establishing a stable power supply circuit. This design achieves perfect synchronization between mechanical movement and circuit on / off, ensuring the immediacy and reliability of the electrical connection, while avoiding the risk of miscontact or short circuits.

[0070] Finally, the entire operation flow is intuitive, simple, and safe. By simply rotating the top cover in sequence, the user can complete the entire flow from selecting, extending, and powering up the plug to fully retrieving it and powering it off for storage. In the stored state, all plugs are completely retracted inside the base case 1, which not only results in a clean appearance but also more effectively avoids the risk of bending, damage, or accidental electric shock that may occur when the base pins are exposed, significantly increasing the product's durability and safety of use. In summary, this invention provides a highly integrated, easy-to-operate, safe, reliable, and extremely practical retractable power plug solution.

[0071] In the description of this invention, the directions or positional relationships indicated by directional terms such as "front, back, up, down, left, right," "horizontal, vertical, vertical, horizontal," and "top, bottom" are generally based on the directions or positional relationships shown in the drawings and are used solely to facilitate and simplify the description of this invention. Conversely, unless explicitly stated, these directional terms do not indicate or imply that the mentioned device or element has a specific direction or must be configured and operated in a specific direction, and therefore should not be understood as limitations on the scope of protection of this invention. The directional terms "inside" and "outside" should be understood as the inside and outside relative to the outline of each component itself.

[0072] For the sake of clarity, spatially relative terms, such as "above," "above," "on the top surface," or "on the top," may be used here to describe the spatial relationship between one device or feature shown in the diagram and another device or feature. It should be understood that spatially relative terms are intended to include different orientations in use or operation other than those described in the device diagram. For example, if the device in the drawing is inverted, a device described as being "above another device or structure" or "on top of another device or structure" may subsequently be positioned "below the other device or structure" or "below the other device or structure." Thus, the exemplary term "above" may include two orientations: "above" and "below." The device may be positioned in other different ways, by different rotation angles or orientations, and the spatially relative descriptions used herein should be interpreted accordingly.

[0073] Furthermore, the use of terms such as "first" and "second" to define the parts is for the purpose of easily distinguishing between the relevant parts, and unless otherwise stated, these terms have no special meaning and should not be understood as limitations on the scope of protection of this invention.

[0074] As stated above, these are merely preferred embodiments of the present invention and are not intended to limit it. To those skilled in the art, the present invention is subject to various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should all be within the scope of protection of the present invention. [Explanation of symbols]

[0075] Plug 100, Base case 1, base plate 11, side wall 12, storage cavity 13, annular slide rail 131, limiting stopper 132, Drive ring 2, first engagement groove 21, lifting guide rail 22, limiting notch 23, Upper rotating cover 3, first engaging projection 31, central hole 32, upper limiting flange 33, Fixed cover 4, central fixed shaft 41, lower limiting flange 42, socket extension hole 43, Socket body 5, first drive slider 51, guide sleeve ring 52, slide bush 53, main body case 54, upper case 541, lower case 542, housing space 55, first through hole 56, movable seat 57, plug terminal 58, second through hole 60, bidirectional screw 61, first contact block 62, first helical chute 63, second contact block 64, second helical chute 65, housing section 66, contact section 67, return spring 68, shaft body 69, transition groove segment 70, connecting member 71, rotation groove 72, bottom cover 6, guide rod 8, first fixed rod Rod 9, second fixing rod 10, first additional pin 100, second additional pin 101, conductor 102, first pin plate 103, second pin plate 104, third pin plate 105, first electrical connection plate 106, second drive slider 107, second electrical connection plate 108, third drive slider 109, third electrical connection plate 110, conductive pillar 111, conductive plate 112, first conductive interface 113, second conductive interface 114, third conductive interface 115, perforation 116, extension 117, recess 118, projection 119, 120

Claims

1. A retractable power plug, A socket body including a plug terminal that can move linearly relative to the socket body, and an extension / retraction device for driving the plug terminal, A base case with multiple through holes on one side to allow the socket body to protrude to its extended state, It includes a drive assembly that selectively connects to a socket body and can drive the socket body to move between a retracted configuration and an unfolded configuration, In this storage configuration, the plug terminals are housed inside the base case. In the deployed configuration, the socket body, driven to the deployed position, protrudes outside the base case through the corresponding through-hole and can be coupled to an external power socket. The socket body is configured such that, during the process of moving between the retracted and deployed configurations, the plug terminals are retractably housed at least partially inside the socket body, A retractable power plug in which, when a drive assembly is triggered and drives the socket body to move relative to the base case, the telescopic device drives the plug terminals to move linearly in and out relative to the socket body in response to the relative motion between the socket body and the base case.

2. The retractable power plug according to claim 1, characterized in that the retractable device includes a trigger portion fixedly mounted on a base case and a screw rotatably installed inside the socket body.

3. The retractable power plug according to claim 2, characterized in that a first transmission part and a second transmission part are provided on the outer surface of the screw along its axial direction, and the orthographic projections of the first transmission part and the second transmission part in the same direction intersect each other.

4. The retractable power plug according to claim 3, characterized in that the plug terminal is configured to cooperate with a second transmission part, and when the screw rotates, the rotational motion of the screw can be converted into linear motion of the plug terminal.

5. The retractable power plug according to claim 4, characterized in that the trigger part is configured to cooperate with the first transmission part, and when the drive assembly drives the socket body to move relative to the base case, the trigger part, in interaction with the first transmission part, forces the screw to rotate, and further drives the plug terminal to move relative to the socket body via the second transmission part to achieve the protrusion or retraction of the plug terminal.

6. The retractable power plug according to claim 3, characterized in that the first transmission section is a first helical chute, the second transmission section is a second helical chute, and the first helical chute and the second helical chute have transition groove segments formed at their projected intersection.

7. The retractable power plug according to claim 6, characterized in that the trigger section includes a first contact block cooperating with a first helical chute, the first helical chute being used to guide the first contact block to move along the axial direction of the screw.

8. The retractable power plug according to claim 1, characterized in that the drive assembly includes a drive ring and an upper rotating cover, the drive ring being installed inside the base case and fixedly connected to the upper rotating cover.

9. The retractable power plug according to claim 8, characterized in that a lifting guide rail is formed on the inner wall of the drive ring.

10. The retractable power plug according to claim 9, characterized in that a drive slider that cooperates with a lifting guide rail is fixedly provided on the socket body, and the socket body is moved along a predetermined direction by rotating the drive ring by rotating the upper rotating cover.

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