Multifunctional changeover plug
The multifunctional conversion plug with a sliding mechanism and insulating cap design solves the problems of easy damage and complex structure of fuses, realizes convenient replacement of fuses and safe power-on, simplifies the internal structure, and improves safety and ease of operation.
Patent Information
- Application Number
- CN202422509298.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The fuse of the existing conversion plug is easily damaged and inconvenient to replace. The structure is complex and the conductive parts are numerous, resulting in a large volume. It is unsafe to use and inconvenient to operate.
It adopts a sliding mechanism and insulating cap design, the fuse is fixed by a rotating buckle, the conductive sheet is integrated, and a press-and-rotate fixing method is used to simplify the structure and facilitate replacement; the slider and top lock ensure the safety of single-use plug.
The fixing stability and replacement convenience of the fuse are improved, the internal structure is simplified, the safe power supply is ensured, the number of conductive parts is reduced, and the safety of use and the convenience of operation are improved.
Smart Images
Figure CN223348142U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of conversion plugs, in particular to a multifunctional conversion plug. Background Art
[0002] A conversion plug—literally, it converts one type of plug into another (such as a telephone power plug, USB charging plug, or computer power plug, or universally refers to plugs from different countries). More generally, it refers to converting power plugs from different countries or one country into another or multiple countries, allowing plugs from multiple countries or one country to be plugged into an outlet in another country. This allows plugs from different countries to be used in different countries around the world, allowing appliances from different countries to be used in other countries.
[0003] Currently, existing conversion plugs are designed with a socket on one end that can accommodate plugs of various sizes. The socket is embedded with a corresponding socket, and the other end is equipped with plugs of various sizes. When not in use, the plugs can be retracted into the interior, where a circuit board is generally installed. To ensure safety, a fuse is installed. However, since fuses are fragile components, if they are directly soldered to the circuit board, they will not function properly if the fuse is damaged. If a replaceable design is chosen, ease of operation and stability after assembly need to be considered. In addition, after each plug is pushed out, at least two corresponding conductive parts (copper sheets) must be installed to ensure electrical connection between the plug and the circuit board. In other words, if there are n plugs, 2n conductive parts are required. This will increase the volume and make the internal structural design more complex. Utility Model Content
[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a multifunctional conversion plug.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A multifunctional conversion plug comprises a main body, a fuse, a circuit board located inside the main body, an inner frame, a pair of conductive sheets, and at least two power plugs. An avoidance hole is provided on one end face of the main body and directly opposite to the power plug. A socket is provided on the other end face of the main body. A conductive socket is provided in the main body relative to the socket. The power plug can be slidably installed in the main body through a sliding mechanism. Each of the power plugs is connected to a push head with insulating properties. The push head is placed outside the main body. A pair of conductive sheets are fixedly arranged directly opposite to the power plug. After the plug of the power plug is pushed out of the avoidance hole, the The power plugs are in contact with the conductive sheets respectively, a mounting opening is provided on one end face of the main body, and a mounting groove is provided on the corresponding inner frame. An insulating cap is provided on the top of the fuse, and a buckle is provided on the side of the insulating cap. An "L"-shaped bayonet is provided on the side wall of the mounting opening, and a conductive spring is provided at the bottom of the mounting groove. One of the conductive sheets extends to form a clamping opening, and the clamping opening is placed in the mounting groove. When the fuse is installed in the mounting groove, the two contact points of the fuse are in contact with the clamping opening and the conductive spring sheet respectively, and the conductive spring sheet, the conductive socket and the other conductive sheet are evenly electrically connected to the circuit board.
[0007] Preferably, the insulating cap is provided with a groove which can be docked with the bit of a screwdriver.
[0008] Preferably, each of the power plugs is provided with a pair of pins, and the conductive sheet is provided with elastic sockets corresponding to the pair of pins. When a single power plug is pushed out, the pair of pins on the pushed out power plug are inserted into the corresponding elastic sockets.
[0009] Preferably, a top lock is inserted into the inner frame so that the top lock can move laterally relative to the inner frame. The top lock is made of insulating material. A top lock column is provided on the top lock. An elastic member is provided between the top lock and the inner frame. Relying on the action of the elastic member, the top lock column always remains close to the side of the power plug. The top end of the top lock column is provided with a stepped surface. The bottom of each side of the power plug is provided with a top lock block protruding outward. The front end of the top lock block is an inclined surface. A pressing head is provided at one end of the top lock, and the pressing head is placed outside the main body.
[0010] Preferably, a slide groove is provided on the inner wall of the front end of the main body, and a slider is installed in the slide groove. The upper and lower ends of the slider are provided with guide slopes. One of the power plugs is provided with a lock hole, and the other power plug is located at the lower end of the slider. When there is a third power plug, the third power plug is located between the other two power plugs. A through hole for the third power plug to pass through is provided in the middle of the slider. By providing an elastic member in the slide groove, the slider is kept stationary by relying on the elastic member, and the through hole is facing the third power plug. The top end of the slider is placed in the lock hole, and space is reserved in the lock hole for further insertion of the slider.
[0011] Preferably, the elastic member is a spring or a metal spring.
[0012] Preferably, a USB interface and an indicator light are provided on the circuit board, the port of the USB interface is located outside the main body, and a light-transmitting hole is provided on the main body at the position of the indicator light.
[0013] Preferably, a display screen for displaying the charging status or product LOGO is further provided on the circuit board, and the board surface of the main body is located opposite to the display screen to avoid airflow.
[0014] Preferably, a protective plate is provided on the end surface of the main body facing the display screen, and a portion of the protective plate located in an airtight position is transparent.
[0015] Due to the adoption of the above-mentioned solution, the present invention adopts a pressing and rotating fixing method to fix the fuse, which makes the fuse fixation safer and more reliable, improves the stability and electrical conductivity of the assembly, and is convenient for quick replacement of the fuse, with low technical requirements and easy operation by the user. At the same time, the structure that originally required the establishment of multiple copper sheets is directly integrated into a conductive sheet, which can not only meet the requirements of safe use and good electrical conductivity, but also effectively reduce the establishment of redundant components, simplify the internal structure, and facilitate installation. In addition, the use of the slider allows only a single power plug to be pushed out between multiple power plugs, thereby ensuring the safety of the plug when used alone. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.
[0017] Figure 2 It is a structural diagram of another direction of an embodiment of the utility model.
[0018] Figure 3 It is an exploded view of the internal structure of an embodiment of the present utility model.
[0019] Figure 4It is a structural schematic diagram of the safety bolt of an embodiment of the present utility model.
[0020] Figure 5 It is a schematic structural diagram of the locking member and the power plug in an embodiment of the present utility model.
[0021] Figure 6 It is a structural diagram of the slider and the slide groove of an embodiment of the utility model.
[0022] Figure 7 It is a schematic diagram of the spatial position relationship between the slider and the power plug in an embodiment of the utility model.
[0023] Figure 8 It is a structural diagram of the protection plate of an embodiment of the present utility model. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.
[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, removable connections, or integral connections. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary, and they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.
[0027] like Figures 1 to 8 As shown, a multifunctional conversion plug provided in this embodiment includes a main body 1, a fuse 2, a circuit board 3 located inside the main body 1, an inner frame 4, a pair of conductive plates 5, and at least two power plugs 6. An avoidance hole 7 is provided at one end surface of the main body 1 and at a position directly opposite to the power plug 6. A socket 8 is provided at the other end surface of the main body 1. A conductive socket 9 is provided in the main body 1 relative to the socket 8. The power plug 6 can be slidably installed in the main body 1 through a sliding mechanism. Each of the power plugs 6 is connected to a push head 10 with insulating properties. The push head 10 is placed outside the main body 1. A pair of conductive plates 5 are fixedly arranged directly opposite to the power plug 6. After the power plug 6 is pushed out of the avoidance hole 7, the plugs of the power plug 6 are respectively connected to the conductive plates. 5 forms contact, one end face of the main body 1 is provided with a mounting opening 11, and the corresponding inner frame 4 is provided with a mounting groove 12, the top of the fuse 2 is provided with an insulating cap 13, and the side of the insulating cap 13 is provided with a buckle 14, the side wall of the mounting opening 11 is provided with an "L"-shaped bayonet 15, and the bottom of the mounting groove 12 is provided with a conductive spring 16, one of the conductive sheets 5 extends to form a clamping opening 17, and the clamping opening 17 is "C"-shaped. The clamping opening 17 is placed in the mounting groove 12. When the fuse 2 is installed in the mounting groove 12, the two contact points of the fuse 2 are in contact with the clamping opening 17 and the conductive spring 16 respectively. The conductive spring 16, the conductive socket 9 and the other conductive sheet 5 are evenly electrically connected to the circuit board 3, and the conductive sheet 5 is a copper sheet.
[0028] When using this embodiment, only the desired power plug 6 needs to be pushed out. The power plug 6 is available in various sizes, including national, European, and American standards. When the user applies force to the pusher head 10 to push out a power plug 6, the two pins of this power plug 6, which are used to connect to the neutral and live wires of the power source, respectively, establish electrical connection with the corresponding conductive plates 5, while the other power plug 6 remains stationary and does not contact the conductive plates 5, allowing the corresponding power plug 6 to be used. The fuse 2 of this embodiment is a British-style ceramic fuse. When the fuse 2 needs to be replaced, it is disconnected from the power supply and then rotated to disengage the clip 14 from the "L"-shaped clip 15. The new fuse 2 is then aligned and inserted into the mounting slot 12. The fuse 2 opens the clip 17. The first contact point of the fuse 2, located at the bottom, contacts the conductive spring 16 first. As inward pressure is applied, the second contact point of the fuse 2 contacts the clip 17. The fuse 2 is then rotated to allow the clip 14 to fit into the clip 15. The elastic force of the conductive spring 16 maintains a secure assembly.
[0029] Furthermore, in order to facilitate the disassembly and assembly of the fuse 2, a groove 18 that can be docked with the blade of a screwdriver is specially provided on the insulating cap 13 of this embodiment. In this way, when it is necessary to rotate the fuse 2, the screwdriver can be inserted into the groove 18 and the screwdriver can be turned to rotate the fuse 2 synchronously.
[0030] Furthermore, in order to achieve close contact between the power plug 6 and the conductive sheet 5 after being pushed out, each power plug 6 is provided with a pair of pins 19, and the conductive sheet 5 is provided with an elastic socket 20 corresponding to the pair of pins 19. After a single power plug 6 is pushed out, the pair of pins 19 on the pushed-out power plug 6 are correspondingly inserted into the elastic socket 20. The elastic socket 20 is formed by bending back the portion extending from the conductive sheet 5. Each elastic socket 20 corresponds to one pair of pins 19, so that a single conductive sheet 5 can be connected to multiple power plugs 6.
[0031] Furthermore, in order to prevent a single power plug 6 from retreating after being pushed out, and to automatically keep the power plug 6 stationary when stored, a top lock 21 is inserted into the inner frame 4 of this embodiment, so that the top lock 21 can move laterally relative to the inner frame, and the top lock 21 is made of insulating material. A top lock column 22 is provided on the top lock 21, and an elastic member 23 is provided between the top lock 22 and the inner frame 4. Relying on the action of the elastic member 23, the top lock column 22 always remains close to the side of the power plug 6, thereby preventing the power plug 6 from moving privately, and the top end of the top lock column 22 is provided with a step surface 24, and the bottom of the side of each of the power plugs 6 is provided with an outwardly protruding top lock block 25, the front end of the top lock block 25 is an inclined surface, and one end of the top lock 21 is provided with a pressing head 26, and the pressing head 26 is placed outside the main body 1. When one of the power plugs 6 is pushed outward, the top lock block 21 gradually pushes the top lock column 22 by means of the inclined surface, causing the top lock 21 to move to one side. When the power plug 6 is pushed to the set position, the tail of the top lock 21 is just placed on the step surface 24 of the top lock column 22. The step surface 24 provides space for the top lock 21 to retreat. Under the action of the elastic member 23, the top lock 21 retreats, causing the step surface 24 to abut against the bottom of the top lock block 25, thereby preventing the power plug 6 from retreating. When the pushed power plug 6 needs to be retracted, the pressing head 26 is simply pressed inward, causing the top lock 21 to move to one side as a whole. The step surface 24 is released from the limiting effect on the top lock block 25, and the power plug 6 can then be retracted to its original position. After releasing the pressing head 26, the top lock 21 returns to its original position, maintaining the pressure on the power plug 6. At the same time, the locking member 21 is provided in combination with the opening between the pushing head 10 of the power plug 6 and the main body 1 to form a sliding installation that satisfies the power plug 6 .
[0032] Furthermore, because the top locking member 21 will disengage from the top pressure on all the power plugs 6 when one power plug 6 is pushed out, in order to prevent the other power plugs 6 from automatically sliding out when one power plug 6 is pushed out, a slide groove 27 is provided on the inner wall of the front end of the main body 1 of this embodiment. A slider 28 is installed in the slide groove 27. The upper and lower ends of the slider 28 are provided with guide slopes. A lock hole 29 is provided on one of the power plugs 6, and the other power plug 6 is located at the lower end of the slider 28. When a third power plug 6 is present, the third power plug 6 is located between the other two power plugs 6. A through hole 30 for the third power plug 6 to pass through is provided in the middle of the slider 28. The elastic member 23 is provided in the slide groove 27. The elastic member 23 keeps the slider 28 stationary and the through hole 30 faces the third power plug 6. The top end of the slider 28 is located in the lock hole 29, and there is space in the lock hole 29 for further insertion of the slider 28. Thus, by default, the third power plug 6 in the middle can be directly pushed out, while the other power plugs 6 are blocked at the upper and lower ends of the slider 28 to prevent them from being pushed out. When the other two power plugs 6 are to be pushed out, they will rely on the guide slope to push the slider 28 upward or downward, so that the through hole 30 and the third power plug 6 are staggered, and the other power plug 6 that has not been pushed out will still remain in the limit position again, so that the power plug 6 can be pushed out.
[0033] Furthermore, the elastic member 23 of this embodiment is a spring or a metal spring.
[0034] Furthermore, to facilitate functional diversity, the circuit board 3 of this embodiment is provided with a USB port 31 and an indicator light (not shown). The port of the USB port 31 is located on the outside of the main body 1, and a light-transmitting hole 32 is provided on the main body 1 at the position of the indicator light. Furthermore, the USB port 31 can be configured as a USB-A port or a USB-C port.
[0035] Furthermore, to enhance the product's quality, the circuit board 3 of this embodiment is further provided with a display screen 33 for displaying the charging status or product logo. A gap 34 is provided on the surface of the main body 1 directly opposite the display screen 33. A protective plate 35 is provided on the end surface of the main body 1 facing the display screen 33. The portion of the protective plate 35 located near the gap 34 is transparent.
[0036] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A multifunctional conversion plug, characterized by: The invention comprises a main body, a fuse, a circuit board located inside the main body, an inner frame, a pair of conductive sheets, and at least two power plugs. An avoidance hole is provided at one end face of the main body and at a position directly opposite to the power plug. A socket is provided at the other end face of the main body. A conductive socket is provided in the main body relative to the socket. The power plug can be slidably installed in the main body through a sliding mechanism. Each power plug is connected to a push head with insulating properties. The push head is placed outside the main body. A pair of conductive sheets are fixedly provided directly opposite to the power plug. After the plug of the power plug is pushed out of the avoidance hole, the power plug They respectively form contact with the conductive sheets, one end face of the main body is provided with a mounting opening, and the corresponding inner frame is provided with a mounting groove, the top of the fuse is provided with an insulating cap, the side of the insulating cap is provided with a buckle, the side wall of the mounting opening is provided with an "L"-shaped bayonet, and the bottom of the mounting groove is provided with a conductive spring sheet, one of the conductive sheets extends to form a clamping opening, and the clamping opening is placed in the mounting groove. When the fuse is installed in the mounting groove, the two contact points of the fuse respectively form contact with the clamping opening and the conductive spring sheet, and the conductive spring sheet, the conductive socket and the other conductive sheet are evenly electrically connected to the circuit board.
2. A multifunctional conversion plug according to claim 1, characterized in that: The insulating cap is provided with a groove which can be connected to the blade of a screwdriver.
3. The multifunctional conversion plug according to claim 1, characterized in that: Each of the power plugs is provided with a pair of pins, and the conductive sheet is provided with elastic sockets corresponding to the pair of pins. When a single power plug is pushed out, the pair of pins on the pushed out power plug are inserted into the corresponding elastic sockets.
4. The multifunctional conversion plug according to claim 1, wherein: A top lock is inserted into the inner frame so that the top lock can move laterally relative to the inner frame. The top lock is made of insulating material. A top lock column is provided on the top lock. An elastic component is provided between the top lock and the inner frame. Relying on the action of the elastic component, the top lock column always remains close to the side of the power plug. The top of the top lock column is provided with a stepped surface. The bottom of each side of the power plug is provided with a top lock block protruding outward. The front end of the top lock block is an inclined surface. A pressing head is provided at one end of the top lock, and the pressing head is placed outside the main body.
5. The multifunctional conversion plug according to claim 4, characterized in that: A slide groove is provided on the inner wall of the front end of the main body, and a slider is installed in the slide groove. The upper and lower ends of the slider are both provided with guide slopes. A lock is provided on one of the power plugs, and the other power plug is located at the lower end of the slider. When there is a third power plug, the third power plug is located between the other two power plugs. A through hole for the third power plug to pass through is provided in the middle of the slider. By providing an elastic member in the slide groove, the slider is kept stationary by relying on the elastic member, and the through hole is directly opposite the third power plug. The top end of the slider is placed in the lock hole, and space is reserved in the lock hole for further insertion of the slider.
6. The multifunctional conversion plug according to claim 5, characterized in that: The elastic member is a spring or a metal spring.
7. The multifunctional conversion plug according to claim 1, characterized in that: The circuit board is provided with a USB interface and an indicator light. The port of the USB interface is located outside the main body. A light-transmitting hole is provided on the main body at the position of the indicator light.
8. The multifunctional conversion plug according to claim 1, characterized in that: The circuit board is also provided with a display screen for displaying the charging status or the product LOGO, and the board surface of the main body is located opposite to the display screen to avoid airflow.
9. The multifunctional conversion plug according to claim 8, characterized in that: A protective plate is provided on the end surface of the main body facing the display screen, and a portion of the protective plate located in an airtight position is transparent.