Folding pin structure of charger and charger
The charger plug structure, with its multi-level conductive connection and synchronous rotation design, solves the problems of electronic wire breakage and insulation material damage during plug folding, thereby improving the mechanical stability and conductive reliability of the plug.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANYANG RUIYU ELECTRONIC TECH CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-08
AI Technical Summary
Existing charger plugs are prone to breakage of electronic wires and damage to insulation materials during folding, affecting conductivity stability and service life.
It adopts a multi-level conductive connection structure, including a synchronous rotation design of the bracket and plug liner, a composite structure of plastic and conductive metal, and forms a continuous conductive path through injection molding. It also provides mechanical support and damping control through buckles and springs.
It improves the mechanical stability and electrical reliability of the plug structure, reduces the risk of oxidation and wear caused by long-term contact, and enhances the durability and folding feel of the plug.
Smart Images
Figure CN224217753U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of charger technology, specifically to a folding plug structure for a charger and a charger. Background Technology
[0002] Currently, most foldable plug products from Europe, South Korea, and Brazil on the market use a single-axis hinged folding mechanism, which allows the plug body and folding prongs to rotate continuously from 0° to 90° via a pivot component. From a mechanical design perspective, this structure achieves the simplest design for the spatial displacement of the prongs through a single degree of rotational freedom. Its hinge part uses a multi-piece hinge structure made of zinc alloy or stainless steel, coupled with ball bearings or friction plates to reduce rotational resistance.
[0003] While this structure allows for spatial transformation at the physical level, the connection between the plug and circuit board is achieved through electronic wire soldering. As the plug (pins) rotate from 0 to 90 degrees, the electronic wires twist, making them prone to breakage and causing open circuits. When the pins rotate, the electronic wires are subjected to cyclic torsional stress, leading to plastic deformation and fatigue fracture of the copper wires inside the core. Studies show that the torsional strength of a single-strand copper conductor decreases non-linearly with increasing diameter, while multi-strand stranded conductors are prone to inter-strand fretting wear under frequent twisting. Furthermore, the PVC or TPE insulation material on the outer layer of the electronic wires undergoes stress relaxation and cracking after repeated deformation, further accelerating the failure of the internal conductors. Utility Model Content
[0004] In order to solve the technical problems in the prior art, this utility model proposes a folding plug structure for a charger and a charger.
[0005] The technical solution adopted in this utility model is:
[0006] This utility model proposes a folding plug structure for a charger, including:
[0007] A housing, on which a mounting base is provided;
[0008] A bracket is rotatably mounted on the mounting base and extends out of the housing. One end of the bracket located inside the mounting base is provided with a first terminal for conductive connection with contacts inside the housing, and the other end extending out of the housing is provided with a conductive connection seat.
[0009] The plug liner is fitted onto the bracket and can rotate with the bracket, allowing the plug liner to switch between a state perpendicular to the bottom surface of the housing and a state parallel to the bottom surface of the housing.
[0010] A first metal connecting piece is disposed on the outside of the plug liner. The first metal connecting piece has a conductive socket and a connection hole for installing a conductive connector. The conductive connector penetrates the plug liner and connects to the conductive connector base.
[0011] The plug jacket is fitted onto the plug liner, and has prongs on its outside. The portion of the prongs inside the plug jacket has pins that connect to the conductive socket.
[0012] Furthermore, the conductive socket is provided in the middle of the first metal connecting piece, and the edge of the conductive socket is provided with a plurality of conductive contact pieces that extend into the plug socket and contact the pin.
[0013] Preferably, the bracket is made of plastic on the outside and conductive metal on the inside, and is integrally molded by injection molding.
[0014] Furthermore, the bottom surface of the housing is provided with an opening, the mounting base is located at the opening and protrudes outward, and the inner bottom surface of the housing is provided with a pressure plate corresponding to the opening to restrict the rotation axis of the bracket within the mounting base.
[0015] Furthermore, when the plug liner is parallel to the bottom surface of the housing, the first terminal of the bracket is housed in the mounting base and separated from the contact point inside the housing. When the bracket is rotated to a position perpendicular to the bottom surface of the housing, the first terminal of the bracket rotates through the opening and contacts the contact point inside the housing.
[0016] Furthermore, the mainboard inside the housing is provided with a third metal spring, which is deflected toward the stopping position within the first terminal to form the contact point.
[0017] Furthermore, the plug liner and the mounting base are respectively provided with mutually cooperating snap-fit structures, so that when the plug liner is switched to the vertical bottom surface of the housing, it is snap-fitted into the mounting base.
[0018] Furthermore, the mounting base includes: a guide portion disposed near one edge of the opening, and a connecting portion connecting the guide portion to the other side of the opening and arching outward to form a pivot groove on the inner side;
[0019] The guide surface is arc-shaped between the top of the guide portion and the bottom of the edge of the opening. When the plug liner rotates to the state of being perpendicular to the bottom surface of the housing, the inner wall fits against the guide surface until it completely covers the guide portion. When the plug liner is in the state of being parallel to the bottom surface of the housing, the first terminal of the bracket is housed in the guide portion.
[0020] Furthermore, the bracket includes: a pair of parallel legs spaced apart and insertable into the plug liner; a pivot laterally connected to the two legs and rotatably mounted in the mounting base; a lever is provided on the outer periphery of the pivot; and a second metal spring is provided between the pressure plate and the mounting base to press the lever and provide rotational damping.
[0021] This utility model also proposes a charger, including the above-mentioned folding plug structure.
[0022] Compared with the prior art, the present invention has the following advantages:
[0023] 1. A multi-level conductive connection structure forms a continuous conductive path from the internal contacts of the housing to the external pins. The synchronous rotation design of the plug liner and the bracket ensures the mechanical stability of the pin structure in the folded state, while the rigid mating relationship between the metal connecting piece and the plug outer sleeve enhances the structural durability.
[0024] 2. The bracket adopts a composite structure of plastic and conductive metal, with an outer plastic coating and an inner conductive metal core. The conductive metal core extends axially, with its two ends exposed within the plastic coating. The plastic coating and the conductive metal core are integrally molded through injection molding, giving the bracket both insulation and conductivity functions.
[0025] 3. When the plug liner rotates to the position perpendicular to the bottom of the housing, it makes direct contact with the contacts inside the housing, thus establishing a complete conductive path. This structure controls the conductive connection through dynamic switching of the mechanical position, preventing energy loss in unnecessary conductive states and reducing the risk of oxidation or wear of the contacts due to long-term contact through physical isolation.
[0026] 4. When the plug structure is in the fully extended state, the snap-fit design provides additional mechanical support to prevent the plug liner 3 from accidentally rotating back to the folded state due to external forces. A second metal spring provides controllable rotational damping during the rotation of the bracket, increasing the damping as the plug liner rotates from the parallel bottom surface of the housing to the perpendicular bottom surface. This allows the plug liner to automatically return to the parallel bottom surface of the housing when it rotates outward at a small angle from the parallel bottom surface position, improving the folding feel and ensuring that the plug remains in the parallel bottom surface position when not folded. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is an exploded view of an embodiment of the present invention;
[0029] Figure 2 This is an assembly diagram of the bracket in an embodiment of the present utility model;
[0030] Figure 3 This is an assembly drawing of the plug liner in an embodiment of the present utility model;
[0031] Figure 4 This is a schematic diagram of the structure in which the plug liner is perpendicular to the bottom surface of the housing in an embodiment of this utility model;
[0032] Figure 5 This is a schematic diagram showing the structure of the plug liner being parallel to the bottom surface of the housing in an embodiment of this utility model;
[0033] Figure 6 This is an assembly diagram of the plug sleeve in an embodiment of the present utility model;
[0034] Figure 7 This is a partial cross-sectional view of the folding pin rotated to the vertical bottom surface of the housing in an embodiment of this utility model;
[0035] Figure 8 This is a partial cross-sectional view of the folding pin rotated to a state parallel to the bottom surface of the housing in an embodiment of this utility model;
[0036] Figure 9 This is an electrical connection diagram of the hidden housing portion in an embodiment of this utility model;
[0037] Figure 10 This is a cross-sectional view of the folding pin rotating to the vertical bottom surface of the housing in an embodiment of this utility model;
[0038] Figure 11 This is a cross-sectional view of the folding pin rotated to the vertical bottom surface of the housing in an embodiment of this utility model;
[0039] 1. Shell;
[0040] 11. Mounting base; 111. Guide section; 112. Connecting section; 12. Pressure plate;
[0041] 2. Bracket;
[0042] 21. Support leg; 22. Rotating shaft; 221. Toggle block; 23. First terminal; 24. Conductive connector;
[0043] 3. Plug inner liner;
[0044] 4. First metal connecting piece; 41. Conductive socket; 43. Connecting hole;
[0045] 5. Plug outer casing; 51. Plug pin; 511. Pin;
[0046] 6. Motherboard; 61. Third metal spring;
[0047] 7. Second metal fragment;
[0048] 81. Buckle; 82. Groove;
[0049] 9. Screws. Detailed Implementation
[0050] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0051] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.
[0052] Existing charger plugs typically use electrical wires to connect the folding prongs, which can easily lead to fatigue damage due to prolonged folding. Specifically, in traditional designs, the conductive path of the folding prongs usually involves directly soldering single or multiple strands of copper wire between the prongs and the internal circuitry. This structure is prone to mechanical stress concentration during folding. When users frequently open and close the plug, the copper wires repeatedly endure bending and stretching at the folding joints, leading to a gradual accumulation of metal fatigue. Furthermore, the insulation layer on the surface of the copper wires is prone to micro-cracks under long-term dynamic loads, potentially causing partial discharge or poor contact. While some products use a separate prong structure, the bonding strength between the solder joints and the copper wires is difficult to maintain consistently. With increased folding cycles, the solder joints may experience incomplete connections or breakage. This structural defect not only affects charging stability but can also lead to decreased insulation performance due to localized overheating, ultimately impacting product safety and lifespan. While the industry has attempted to improve this by optimizing copper wire flexibility and adding buffer structures, a mature solution that balances mechanical strength and conductivity efficiency has yet to be developed.
[0053] In this regard, such as Figure 1-3 , Figure 9 As shown, this utility model proposes a folding plug structure for a charger, comprising: a housing 1, a bracket 2, a plug inner liner 3, a first metal connecting piece 4, and a plug outer sleeve 5. Wherein:
[0054] The housing 1 is provided with a mounting base 11 for accommodating the rotating structure and one end of the bracket 2. The bracket 2 is mounted on the mounting base 11 via the rotating structure, with one end located inside the mounting base 11 and the other end extending outside the housing 1. The inner end of the bracket 2 is provided with a first terminal 23, which can form an electrical connection with a pre-set elastic contact inside the housing 1; the outer end of the bracket 2 is provided with a conductive connection seat 24, serving as a transition node for current transmission. The plug liner 3 is fitted onto the surface of the bracket 2 and rotates synchronously with the bracket 2, such as... Figure 4 , 5 As shown, its rotation range covers both vertical and parallel states to the bottom surface of the housing, realizing the folding and unfolding function of the plug structure. The first metal connecting piece 4 is located on the outside of the plug inner liner 3, and has a conductive socket 41 and a connecting hole 43. The connecting hole 43 is used to install a conductive connector, which penetrates the plug inner liner 3 and establishes an electrical connection with the conductive connector seat 24 at the end of the bracket 2. Figure 6 As shown, the plug outer sleeve 5 is fitted over the plug inner sleeve 3, and the outer surface of the plug outer sleeve 5 is provided with plug pins 51 for plugging in power. The portion of the plug pins 51 inside the plug outer sleeve 5 has a pin 511, which engages with the conductive socket 41 of the first metal connecting piece 4. Through a multi-level conductive connection structure (including the first terminal 23-contact connection, the conductive connector-conductive connector base 24 connection, and the pin 511-conductive socket 41 connection), a continuous conductive path is formed from the internal contacts of the housing 1 to the external plug pins 51. The synchronous rotation design of the plug inner sleeve 3 and the bracket 2 ensures the mechanical stability of the plug structure in the folded state, while the rigid engagement between the metal connecting piece and the plug outer sleeve 5 enhances structural durability.
[0055] In a specific embodiment, the first metal connecting piece 4 has the following structure: a conductive socket 41 is located in the central region of the metal connecting piece, and multiple conductive contacts extending into the socket are provided on the inner edge of the conductive socket 41. These conductive contacts achieve tight contact with the pin 511 through elastic deformation, thereby enhancing the stability and conductivity of the plug-in contact. Connecting holes 43 are located on both sides of the conductive socket 41, and the conductive connector adopts the form of screw 9, which penetrates the plug liner 3 and screws into the threaded hole on the conductive connector seat 24 to achieve a fixed connection between the metal connecting piece, the plug liner 3, and the bracket 2. The metal connecting piece also has multiple positioning holes, and the plug liner 3 has positioning protrusions at corresponding positions that match the positioning holes. This ensures that the pin structure maintains stable contact between the pin 511 and the socket during frequent opening and closing, while avoiding the problem of interruption of the conductive path due to the displacement of the metal connecting piece.
[0056] like Figure 2As shown, the bracket 2 adopts a composite structure of plastic and conductive metal, with an outer plastic coating and an inner conductive metal core. The conductive metal core extends axially, with its two ends exposed within the plastic coating, forming the first terminal 23 and the conductive connector 24, respectively. The plastic coating and the conductive metal core are integrally molded using injection molding, giving the bracket 2 both insulation and conductivity. The plastic coating isolates the conductive metal from the external environment, preventing short circuits or leakage caused by accidental contact with non-conductive areas. Simultaneously, the coating's structural design provides mechanical support for the bracket 2. The exposed ends of the conductive metal core (i.e., the first terminal 23 and the conductive connector 24) serve as critical current interfaces, ensuring reliable conductivity with the contacts inside the housing 1 and the external pins 511. This design reduces manufacturing complexity while improving the overall strength of the bracket 2 through synergistic optimization of materials and processes, reducing the risk of insulation aging during long-term use, and ensuring the stability of the current transmission path through the continuity of the conductive metal core.
[0057] In specific embodiments, such as Figure 3 As shown, a through opening is provided on the bottom surface of the housing, and the mounting base 11 is located at this opening and protrudes outward from the housing 1. A pressure plate 12 is provided on the inner bottom surface of the housing 1 corresponding to the opening. The pressure plate 12 covers part of the opening by a fixing method and is connected to the mounting base 11 by screws 9 or other fasteners. The position of the pressure plate 12 coincides with the axis of the rotating shaft 22 of the bracket 2, and its function is to constrain the rotating shaft 22 of the bracket 2 within the mounting base 11 through physical limiting.
[0058] In a further embodiment, such as Figure 10 , 11 As shown, the pivot 22 of the bracket 2 is located at one end near the bracket body, causing the rotation center of the bracket 2 to shift to the side closer to the first terminal 23. When the plug inner liner 3 is parallel to the bottom surface of the housing, the bracket 2 rotates to a lower position with the inner liner, and its first terminal 23 is completely housed inside the mounting base 11. At this time, the first terminal 23 is physically isolated from the preset contacts inside the housing 1, preventing contact when not in use. When the plug inner liner 3 rotates to a position perpendicular to the bottom surface of the housing, the outer end of the bracket 2 rotates outward to a higher position, and its first terminal 23 rotates synchronously through the opening on the bottom surface of the housing to the inside of the housing 1, forming direct contact with the contacts inside the housing 1, thereby establishing a complete conductive path. This structure controls the conductive connection through dynamic switching of mechanical position, preventing energy loss in unnecessary conductive states and reducing the risk of oxidation or wear of contacts due to long-term contact through physical isolation.
[0059] Specifically, such as Figure 1 , 10As shown in Figure 11, a third metal spring 61 is provided on the main board 6 inside the housing 1. This spring 61 is structurally designed to bend towards the stopping position of the first terminal 23 during rotation of the bracket 2, forming a physical contact surface. When the bracket 2 rotates with the plug liner 3 to a position perpendicular to the bottom surface of the housing, the first terminal 23 passes through the opening of the housing 1 along the rotation trajectory, and its end contacts the bent third metal spring 61, forming an electrical connection. The third metal spring 61 is made of an elastic metal material, and its bending direction is adapted to the movement path of the first terminal 23. The elastic deformation of the spring 61 achieves the clamping effect on the first terminal 23, thereby enhancing the stability and conductivity of the contact connection. The dynamic contact method compensates for manufacturing tolerances and minor deformations during long-term use, avoiding poor contact problems caused by rigid contact. The bending structure of the spring 61 also provides a certain preload, ensuring that the first terminal 23 can maintain effective contact at different rotation angles, further improving the conductivity reliability of the folding pins during frequent opening and closing.
[0060] In specific embodiments, such as Figure 3 As shown, the mounting base 11 includes a guide portion 111 and a connecting portion 112, wherein:
[0061] like Figure 7 , 8 As shown, the guide portion 111 is provided on one side edge near the opening of the housing 1, and a continuous arc-shaped guide surface is formed between its top and the bottom edge of the opening. This guide surface serves as a physical guide for the rotation path of the plug liner 3, ensuring that when the plug liner 3 rotates toward the vertical bottom surface of the housing, its inner wall can smoothly slide along the guide surface until it completely covers the area of the guide portion 111.
[0062] The connecting portion 112 extends from the guide portion 111 to the other edge of the opening and forms a closed pivot groove through an outwardly arched curved surface structure. This pivot groove provides embedded support for the pivot 22 of the bracket 2, reducing mechanical wear during long-term rotation. When the plug liner 3 is in a parallel position to the bottom surface of the housing, the first terminal 23 of the bracket 2 is housed within the space of the guide portion 111, preventing interference with other components inside the housing 1. The guide portion 111 and the connecting portion 112 form a continuous transition structure through an integrated design. The arc-shaped surface of the guide portion 111, together with the arched shape of the connecting portion 112, constructs a rotation trajectory constraint system for the plug liner 3, ensuring the smoothness of the folding process of the plug structure and maintaining the axial stability of the bracket 2 during rotation through the limiting effect of the pivot groove. This structural design, through the continuous guidance of the guide surface and the embedded support of the pivot groove, reduces frictional loss during the rotation of the plug liner 3, while ensuring the precise positioning of the bracket 2 in both folded and unfolded states.
[0063] In specific embodiments, such as Figure 7 , 8As shown, the outer wall of the plug inner liner 3 and the corresponding position of the mounting base 11 are respectively provided with matching snap-fit structures. These snap-fit structures engage when the plug inner liner 3 is rotated to the vertical bottom surface of the housing, achieving physical locking between the plug inner liner 3 and the mounting base 11 through a snap-fit action. The snap-fit design can adopt a combination of elastic hooks and fixed slots, or be achieved through a convex-concave mechanical interlocking structure. This connection method provides additional mechanical support when the plug structure is in the fully extended state, preventing the plug inner liner 3 from accidentally rotating back to the folded state due to external forces.
[0064] For example, a buckle 81 is provided at the bottom of the arc-shaped guide surface of the guide part 111, and a corresponding slot is provided on the inner wall of the plug liner 3. When the plug liner 3 is rotated to the position perpendicular to the bottom surface of the housing, the buckle 81 engages with the slot, thus fixing the positions of the plug liner 3 and the plug outer sleeve 5 that is fitted over the plug liner 3. In addition, the plug liner 3 and the plug outer sleeve 5 are also connected by buckles 81. Specifically, the slot provided at the corresponding position on the inner wall of the plug liner 3 is a through slot, the opening on the plug outer sleeve 5 is engaged on the outside of the slot, and the buckle 81 provided at the bottom of the arc-shaped guide surface of the guide part 111 is engaged on the inside of the slot.
[0065] Specifically, such as Figure 3 As shown, the bracket 2 includes a pair of parallel, spaced-apart legs 21, which are fixed together by a pivot 22 to form an integral structure. The legs 21 and the pivot 22 together constitute the main frame of the bracket 2. The portion of the legs 21 connected to the pivot 22, excluding the pivot, can be inserted into the plug inner liner 3, achieving a nested fit between the bracket 2 and the plug inner liner 3. The pivot 22 is installed in the pivot groove of the mounting base 11 and is confined within the pivot groove by a wire clamp; a lever 221 is provided around its outer periphery.
[0066] like Figure 10 , 11 As shown, a second metal spring 7 is provided between the pressure plate 12 and the mounting base 11. The spring 7 presses the surface of the lever block 221 through elastic deformation, thereby providing controllable rotational damping during the rotation of the bracket 2. This increases the damping during the rotation of the plug inner liner 3 from the parallel bottom surface state to the perpendicular bottom surface state of the housing. This allows the plug inner liner 3 (plug outer sleeve 5) to automatically return to the parallel bottom surface state when it rotates outward at a small angle from the parallel bottom surface state, improving the folding feel. At the same time, it ensures that the plug inner liner 3 (plug outer sleeve 5) remains in the parallel bottom surface state when it is not folded.
[0067] It should be noted that the terminology used above is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, operations, devices, components, and / or combinations thereof.
[0068] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0069] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A folding plug structure for a charger, characterized in that, include: A housing, on which a mounting base is provided; A bracket is rotatably mounted on the mounting base and extends out of the housing. One end of the bracket located inside the mounting base is provided with a first terminal for conductive connection with contacts inside the housing, and the other end extending out of the housing is provided with a conductive connection seat. The plug liner is fitted onto the bracket and can rotate with the bracket, allowing the plug liner to switch between a state perpendicular to the bottom surface of the housing and a state parallel to the bottom surface of the housing. A first metal connecting piece is disposed on the outside of the plug liner. The first metal connecting piece has a conductive socket and a connection hole for installing a conductive connector. The conductive connector penetrates the plug liner and connects to the conductive connector base. The plug jacket is fitted onto the plug liner, and has prongs on its outside. The portion of the prongs inside the plug jacket has pins that connect to the conductive socket.
2. The folding plug structure of the charger as described in claim 1, characterized in that, The conductive socket is provided in the middle of the first metal connecting piece, and the edge of the conductive socket is provided with a plurality of conductive contact pieces that extend into the plug socket and contact the pin.
3. The folding plug structure of the charger as described in claim 1, characterized in that, The bracket is made of plastic on the outside and conductive metal on the inside, and is integrally molded by injection molding.
4. The folding plug structure of the charger as described in claim 1, characterized in that, The bottom surface of the housing is provided with an opening, the mounting base is located at the opening and protrudes outward, and the inner bottom surface of the housing is provided with a pressure plate corresponding to the opening to restrict the rotation axis of the bracket within the mounting base.
5. The folding plug structure of the charger as described in claim 4, characterized in that, When the pivot of the bracket is close to one end of the bracket, and the plug liner is in a state parallel to the bottom surface of the housing, the first terminal of the bracket is housed in the mounting base and separated from the contact point inside the housing. When the bracket is rotated to a state perpendicular to the bottom surface of the housing, the first terminal of the bracket rotates and passes through the opening to contact the contact point inside the housing.
6. The folding plug structure of the charger as described in claim 5, characterized in that, The main board inside the housing is provided with a third metal spring, which is deflected toward the stopping position of the first terminal to form the contact.
7. The folding plug structure of the charger as described in claim 1, characterized in that, The plug liner and the mounting base are respectively provided with mutually cooperating snap-fit structures, so that when the plug liner is switched to the vertical bottom surface of the housing, it is snapped into connection with the mounting base.
8. The folding plug structure of the charger as described in any one of claims 1 to 7, characterized in that, The mounting base includes: a guide portion disposed near one edge of the opening, and a connecting portion connecting the guide portion to the other side of the opening and arching outward to form a rotating shaft groove on the inner side; The guide surface is arc-shaped between the top of the guide portion and the bottom of the edge of the opening. When the plug liner rotates to the state of being perpendicular to the bottom surface of the housing, the inner wall fits against the guide surface until it completely covers the guide portion. When the plug liner is in the state of being parallel to the bottom surface of the housing, the first terminal of the bracket is housed in the guide portion.
9. The folding plug structure of the charger as described in claim 4, characterized in that, The bracket includes: a pair of parallel legs spaced apart and insertable into the plug liner; a rotating shaft laterally connected to the two legs and rotatably mounted in the mounting base; a lever is provided on the outer periphery of the rotating shaft; and a second metal spring is provided between the pressure plate and the mounting base to press the lever and provide rotational damping.
10. A charger, characterized in that, Includes the folding pin structure as described in any one of claims 1 to 9.