Waterproof power adapter with replaceable plug

Abstract

The application discloses a waterproof power adapter with replaceable plug, which comprises a power adapter body, a movable plug, a first socket part provided on the power adapter body, a conductive assembly provided on the first socket part, a second socket part provided on the opposite side of the movable plug, which is provided with an electrically connected plug, and a conductive part connected with the electrically connected plug, and a sealing part. After the second socket part or the movable plug is fixed with the first socket part, the conductive part is matched with the conductive assembly, a cavity is formed among the first socket part, the movable plug and the second socket part, the conductive part and the conductive assembly are located in the cavity, and the sealing part is matched with the second socket part and the first socket part respectively, so that the cavity becomes a sealed cavity. The application has the advantage of sealing performance.

Description

Technical Field

[0001] This invention relates to the field of power adapter technology, and more specifically to a waterproof power adapter with a replaceable plug. Background Technology

[0002] With the rapid development of transportation, people can travel to and from countries around the world easily and quickly. However, since different countries use different voltages, the compatibility of electrical equipment carried by travelers is greatly limited. As a result, voltage-changeable power adapters have been developed, allowing travelers to adjust the voltage provided by the destination country to the voltage suitable for their electrical equipment by stepping up or stepping down the voltage.

[0003] While the aforementioned power adapters can effectively solve the problem of whether the voltage is compatible with electrical equipment, different countries design their power sockets in different forms to distinguish the different voltages supplied, thus preventing users from plugging in electrical equipment that is not compatible with the voltage.

[0004] To effectively solve this problem, a design has been developed that makes the plug of the power adapter replaceable and movable to accommodate various types of power sockets. For example, CN1658443C discloses a power supply with a replaceable power plug, which includes a power supply body, a movable plug, and a locking positioning piece. The side of the power supply body has a groove with a conductive plate assembly at the bottom. The wall of the groove has several grooves, and the wall of the groove on the same side has an embedding space communicating with the groove. The movable plug has an annular body fixed on the opposite side of the side with the pins and a conductive contact connected to the pins. The outer wall of the annular body has several positioning blocks and a positioning groove on one end edge. The locking positioning piece is located on one side of the groove, with a protrusion at one end facing the bottom of the groove for engaging with the positioning groove, and the other end extending out of the groove as a free end.

[0005] When the power supply with the above structure connects the movable plug to the power supply body, the several positioning blocks on the movable plug first engage with the grooves on the wall of the slot. Then, the movable plug is rotated so that the positioning blocks are respectively embedded in the embedding space of the groove. The protrusion of the locking positioning piece is inserted into the positioning groove, thereby restricting the plug to be embedded and fixed on the power supply body. That is, the combination of the positioning block and the embedding space prevents the movable plug from moving along the axial direction of the power supply body, and the combination of the locking positioning piece and the positioning groove prevents the movable plug from rotating along the circumference of the power supply body.

[0006] For the power supply with the above structure, since the locking and positioning piece is elastically deformed when it is pressed, there must be a gap between the locking and positioning piece and the power supply body. Therefore, if liquid enters the groove through this gap without any sealing measures, the liquid will inevitably cause a short circuit in the circuit inside the power supply body after acting on the two sets of conductive contacts and conductive sheet groups. Summary of the Invention

[0007] This invention provides a waterproof power adapter with a replaceable plug and sealing performance.

[0008] The technical solutions to the above-mentioned technical problems are as follows.

[0009] A waterproof power adapter with a replaceable plug includes a power adapter body and a movable plug. The power adapter body has a first socket portion with a conductive component. The movable plug has a second socket portion and a conductive component connected to the power pins on the opposite side of the first socket portion. It also includes a sealing component. After the second socket portion or the movable plug is fixed to the first socket portion, the conductive component and the conductive component cooperate to form a cavity between the first socket portion, the movable plug, and the second socket portion. The conductive component and the conductive component are located in the cavity. The sealing component cooperates with the second socket portion and the first socket portion respectively to make the cavity a sealed cavity.

[0010] The present invention forms a cavity between the first socket, the movable plug and the second socket, and the cavity is sealed by the sealing component. This prevents liquid from entering the cavity, thereby ensuring that the conductive parts and conductive components located in the cavity will not short-circuit, and ensuring the reliability of the power adapter body. Attached Figure Description

[0011] Figure 1 This is a perspective view of the first type of waterproof power adapter with replaceable plug.

[0012] Figures 1a-1g for Figure 1 The product shown is a six-sided projected view and a perspective view from another direction.

[0013] Figure 2 This is a cross-sectional view of the first type of waterproof power adapter with replaceable plug.

[0014] Figure 3 for Figure 1 The diagram shows a perspective view of the power adapter body with a first socket.

[0015] Figure 4 for Figure 1 The diagram shows a front view of the power adapter body with a first socket.

[0016] Figure 5 for Figure 1 The diagram shows a perspective view of a movable plug with a second socket.

[0017] Figure 6 This is a 3D view of the conductive component.

[0018] Figure 7 This is a schematic diagram of the first type of sealing component.

[0019] Figures 8a-8g The product after replacing the first type of movable plug has a six-sided projection view and a three-dimensional view.

[0020] Figures 9a-9g The product after replacing the second type of movable plug has a six-sided projection view and a 3D view.

[0021] Figures 10a-10g The product after replacing the third type of movable plug has a six-sided projection view and a 3D view.

[0022] Figure 11 This is a cross-sectional view of a waterproof power adapter with a second type of replaceable plug.

[0023] Figure 12 This is a cross-sectional view of a waterproof power adapter with a third type of replaceable plug.

[0024] Figure 13 This is a cross-sectional view of a waterproof power adapter with a fourth type of replaceable plug.

[0025] Figure 14 for Figure 13 The exploded diagram.

[0026] Figure 15 This is a cross-sectional view of a waterproof power adapter with a fifth type of replaceable plug.

[0027] Figure 16 for Figure 15 A partial structural diagram.

[0028] Figure 17 An exploded view of the sixth type of waterproof power adapter with replaceable plug.

[0029] Figure 18 for Figure 17 The structural diagram of the movable plug in the middle.

[0030] Figure 19 This is a cross-sectional view of a waterproof power adapter with a sixth type of replaceable plug.

[0031] Figure 20 for Figure 17 The diagram shows the structure of the conductive part.

[0032] Figure 21 for Figure 20 A modified structure of the conductive part shown.

[0033] Figures 22a-22g The product after replacing the fourth type of movable plug has a six-sided projection view and a 3D view.

[0034] Figures 23a-23g The product after replacing the fifth type of movable plug has a six-sided projection view and a 3D view.

[0035] Figures 24a-24g The product after replacing the sixth type of movable plug has a six-sided projection view and a 3D view.

[0036] The power adapter body 10 includes a housing 10a, a circuit board 10b, an end cap 10c, a first electrical connection component 10d, a second electrical connection component 10e, a socket 10f, a first socket portion 11, a base 11a, an annular portion 11b, a groove 11c, a first circumferential joint portion 11d, an elastic buckle 11e, a first protrusion 11f, a conductive component 12, a first conductive component 120, a connecting piece 121, a first bent portion 122, a conductive contact portion 123, a support foot 124, a crimping portion 125, a first elastic arm 13, a first snap tooth 14, a clearance opening 15, a pressing portion 16, a cavity A, and a thread B.

[0037] The components include: a movable plug 20, a power-connecting pin 21, a second socket 22, a plug-in boss 220, an annular boss 221, a second annular groove 222, a second circumferential joint 223, a conductive part 23, a first conductive part 23a, a second conductive part 23b, a sleeve part 23b1, an abutment part 23b2, a first opening 23c, an opening 23d, a first positioning part 23e, a second positioning part 23f, a socket 23g, a snap-fit ​​part 24, and a slot 25.

[0038] Sealing component 30, slot 31, fitting part 32, fitting groove 33, first engagement groove 34, annular protrusion 35. Detailed Implementation

[0039] First Embodiment

[0040] like Figures 1 to 7 The waterproof power adapter with replaceable plug of the present invention includes a power adapter body 10, a movable plug 20, and a sealing component 30. Each part and the relationship between the parts are described in detail below.

[0041] like Figures 1 to 7The power adapter body 10 consists of a housing 10a, a circuit board 10b, and an end cap 10c. At least a portion of the circuit board 10b is installed inside the housing 10a. The circuit board 10b is provided with a voltage conversion circuit (the voltage conversion circuit is prior art and is not shown in the figure). One end of the circuit board 10b is provided with a first electrical connection component 10d, and the other end of the circuit board 10b is provided with a second electrical connection component 10e. The end cap 10c is fixed to the housing 10a, and the end cap 10c is provided with a socket 10f, which is connected to the second electrical connection component 10e.

[0042] like Figures 1 to 7 The power adapter body 10 is provided with a first socket 11, which includes a base 11a and an annular portion 11b. One end of the base 11a is fixed to the power adapter body 10 and the base 11a is fixed to the housing 10a. After the other end of the base 11a is fixed to the annular portion 11b, a groove 11c is formed between the base 11a and the annular portion 11b. In this embodiment, the base 11a, the annular portion 11b and the power adapter body 10 are integrally injection molded.

[0043] like Figures 1 to 7 A conductive component 12 is provided on the first socket portion 11. The movable plug 20 has a second socket portion 22 and a conductive portion 23 connected to the power contact pin 21 on the opposite side of the plug 20. The second socket portion 22 and the movable plug 20 are integrally formed by injection molding. The second socket portion 22 is annular and surrounds the conductive portion 23. The conductive portion 23 is columnar or sheet-like and is integrally formed with the power contact pin 21.

[0044] like Figures 1 to 7 In this embodiment, the conductive component 12 includes a first conductive component 120, a connecting piece 121, and a spring piece. The first conductive component 120 passes through the first sleeve portion 11 and is fixed to the first sleeve portion 11, that is, the first conductive component 120 passes through the base 11a, and the first conductive component 120 and the base 11a are integrated by injection molding.

[0045] like Figures 1 to 7 The connecting piece 121 is connected to one end of the first conductive component 120, and the other end of the first conductive component 120 is inserted into the first electrical connection component 10d on the circuit board 10b. The connecting piece 121 has a through hole, and the other end of the first conductive component 120 includes two crimping portions 125. After the crimping portions 125 pass through the through hole in the connecting piece 121, a tool is used to bend the crimping portions 125, thereby pressing the connecting piece 121 between the crimping portions 125 and the base 11a. Alternatively, the connecting piece 121 and the first conductive component 120 can also be connected by integral molding.

[0046] like Figures 1 to 7The spring is used to cooperate with the conductive part 23. The spring includes a first bending part 122 for elastic deformation when subjected to force and a conductive contact part 123. The two ends of the first bending part 122 are respectively fixed to one end of the connecting piece 121 and one end of the conductive contact part 123. The conductive contact part 123 forms an angle with the first sleeve part 11, that is, the conductive contact part 123 is inclined relative to the axial direction of the first sleeve part 11.

[0047] like Figures 1 to 7 Since the conductive part 23 will exert pressure on the spring piece after the movable plug 20 is connected to the first socket 11, in this embodiment, by forming an angle between the conductive contact part 123 and the first socket 11, it can prevent the spring piece from breaking after being subjected to force, and ensure that the spring piece is reset after the movable plug 20 is separated from the first socket 11. After replacing other movable plugs 20, it can still ensure that the conductive contact part 123 and the conductive part 23 form an electrical fit. This structure can avoid opening a groove on the base 11a for deforming a part of the base 11a when the conductive part 23 abuts against the spring piece, thus ensuring the strength of the base 11a and preventing the aforementioned part of the base 11a from breaking during deformation.

[0048] like Figures 1 to 7 The other end of the conductive contact 123 is bent to form a support leg 124 for limiting the swing amplitude of the conductive contact 123 after it abuts against the first socket 11. A gap is provided between the support leg 124 and the first socket 11. When the conductive part 23 abuts against the conductive contact 123, as the conductive part 23 continues to be axially fed, the conductive contact 123 is pressed and swings, thereby causing the support leg 124 at the other end of the conductive contact 123 to abut against the base 11a in the first socket 11, thereby supporting the conductive contact 123.

[0049] like Figures 1 to 7 The conductive contact 123 is tilted relative to the base 11a in both the initial and working states. This allows the support leg 124 to undergo elastic deformation when the conductive contact 123 comes into contact with the base 11a, thus preventing the conductive contact 123 from being damaged by pressure.

[0050] like Figures 1 to 7 The second socket 22 is annular. After the second socket 22 is fixed to the first socket 11, that is, the second socket 22 is fixed to the annular part 11b, the conductive part 23 cooperates with the conductive component 12, and forms a cavity A between the first socket 11, the movable plug 20 and the second socket 22. The conductive part 23 and the conductive component 12 are located in the cavity A. The sealing component 30 is preferably made of rubber. The sealing component 30 cooperates with the second socket 22 and the first socket 11 respectively, so that the cavity A becomes a sealed cavity.

[0051] like Figures 1 to 7 The present invention forms a cavity A by means of the first socket 11, the movable plug 20 and the second socket 22, and makes the cavity A a sealed cavity by means of the sealing component 30. This can prevent liquid from entering the cavity A, thereby ensuring that the conductive part 23 and the conductive component 12 located in the cavity A will not be short-circuited, and ensuring the reliability of the power adapter body 10.

[0052] like Figures 1 to 7 Since the first socket 11 has a groove 11c, when the second socket 22 is fixed to the first socket 11, the sealing member 30 is located in the groove 11c, the base 11a supports the sealing member 30, and the annular part 11b surrounds the sealing member 30. In this way, the first socket 11 protects the sealing member 30.

[0053] like Figures 1 to 7 In this embodiment, both the second socket 22 and the first socket 11 are provided with threads B. The second socket 22 and the first socket 11 are fixed by threaded connection. Preferably, an internal thread is provided on the inner circumferential surface of the annular portion 11b and an external thread is provided on the outer circumferential surface of the second socket 22. Therefore, in this embodiment, the second socket 22 is threadedly connected to the first socket 11 by rotation.

[0054] like Figures 1 to 7 Before connecting the second socket 22 and the first socket 11, the sealing member 30 is first fitted with the first socket 11 or the second socket 22. In this embodiment, it is preferred to fix the sealing member 30 to the end of the second socket 22. When the second socket 22 is fixed with the first socket 11, the sealing member 30 is pressed between the second socket 22 and the first socket 11.

[0055] like Figures 1 to 7 The second socket 22 has an insertion boss 220 at its end. The sealing member 30 is annular and has a slot 31 on its end face facing the second socket 22. The insertion boss 220 and the slot 31 cooperate with each other, which can improve the sealing performance between the second socket 22 and the sealing member 30.

[0056] like Figures 1 to 7Preferably, an annular boss 221 is provided on the circumferential surface of the insertion boss 220, and a second annular groove 222 is formed between the annular boss 221, the insertion boss 220, and the second socket portion 22. One end of the sealing member 30 is also provided with a fitting portion 32, which mates with the second annular groove 222, forming a fitting groove 33 between the fitting portion 32, the sealing member 30, and the slot 31. The annular boss 221 mates with the fitting groove 33. This structure forms a labyrinthine structure between the second socket portion 22 and the sealing member 30, which can further improve the sealing performance between the second socket portion 22 and the sealing member 30.

[0057] like Figures 1 to 7 This embodiment also includes a latching mechanism for preventing the movable plug 20 from rotating in the opposite direction. The latching mechanism includes a first elastic arm 13 disposed on the first socket portion 11. The first elastic arm 13 is located on the annular portion 11b and is integrally formed with the annular portion 11b by injection molding. A first latching tooth 14 is provided on the axial end face of the first elastic arm 13. The latching mechanism also includes a latching portion 24 disposed on the movable plug 20. A latching groove 25 for engaging with the first latching tooth 14 is provided on the axial end face of the latching portion 24. The first socket portion 11 is provided with a clearance opening 15 for the first elastic arm 13 to make way when it undergoes elastic deformation. The clearance opening 15 is located on the annular portion 11b, and the first elastic arm 13 is located within the clearance opening 15. The first elastic arm 13 is arranged along the circumference of the first socket portion 11, that is, along the circumference of the annular portion 11b. The thickness of the first elastic arm 13 is equal to that of the annular portion 11b. A pressing part 16 is provided on the outside of the first elastic arm 13, which facilitates the operation of the first elastic arm 13.

[0058] In the power supply described in the background art, the movable plug and the power supply body are fixed by the engagement of a locking positioning piece and a positioning groove. However, in the background art, the main body of the locking positioning piece is located inside the groove. If an annular sealing component is installed inside the groove, it will isolate the locking positioning piece and the positioning groove, preventing them from engaging. Figures 1 to 7In this embodiment, since the second socket 22 is fixed to the first socket 11 by a threaded connection, the sealing component 30 is not subject to the limitations of the prior art structure. Considering safety and to prevent the second socket 22 from separating from the first socket 11 due to non-human factors, a snap-fit ​​mechanism is further added. However, the first elastic arm 13 in the snap-fit ​​mechanism only occupies the space of the clearance opening 15 on the annular portion 11b. The first snap tooth 14 is set on the axial end face of the first elastic arm 13, and the slot 25 is set on the axial end face of the snap-fit ​​portion 24. This structure does not occupy the space of the groove 11c, thereby preventing the snap-fit ​​mechanism from occupying the space for installing the sealing component 30. Therefore, interference between the sealing component 30 and the snap-fit ​​mechanism is avoided when assembling the sealing component 30.

[0059] The assembly process in this embodiment is as follows: like Figures 1 to 7 The sealing component 30 is fitted onto the end of the second socket 22, and the second socket 22 is inserted into the groove 11c of the first socket 11. The movable plug 20 is rotated so that the thread B on the second socket 22 engages with the thread B on the first socket 11. This threaded connection fixes the second socket 22 and the first socket 11, while simultaneously pressing the conductive part 23 onto the conductive component 12 to form an electrical conduction fit. The sealing component 30 is pressed tightly between the second socket 22 and the base 11a. Furthermore, during the rotation of the movable plug 20, the latching part 24 on the movable plug 20 applies pressure to the first latching tooth 14, causing the first elastic arm 13 to swing within the clearance opening 15. The first elastic arm 13 accumulates elastic potential energy. When the second socket 22 can no longer rotate relative to the first socket 11, the first elastic arm 13 returns to its original position, and the first latching tooth 14 is precisely engaged within the slot 25, thus locking the first latching tooth 14 and the latching part 24 together.

[0060] like Figures 1 to 7 When the movable plug 20 needs to be replaced, apply pressure to the pressing part 16 (e.g., press the pressing part 16 with your thumb) to make the first elastic arm 13 swing within the relief opening 15, thereby releasing the engagement between the first latching tooth 14 and the latching part 24. Rotate the movable plug 20 in the opposite direction to release the threaded connection between the second socket 22 and the first socket 11. Remove the movable plug 20, and then assemble the movable plug 20 to be replaced with the first socket 11 according to the above assembly process (e.g., ...). Figures 8a-8g , Figures 9a-9g , Figures 10a-10g , Figures 22a-22g , Figures 23a-23g , Figures 24a-24g ).

[0061] Second Embodiment

[0062] like Figure 11As shown, this embodiment is a further improvement based on the first embodiment. Specifically, the sealing component 30 has a first mating groove 34 on the end face facing the first socket 11, and the first socket 11 has a first protrusion 11f on the end face opposite to the sealing component 30. The first protrusion 11f and the first socket 11 are preferably formed by injection molding. The first protrusion 11f and the first mating groove 34 cooperate. This structure can further improve the sealing performance.

[0063] Third Embodiment

[0064] like Figure 12 As shown, this embodiment is a further improvement on the first embodiment. Specifically, a third annular groove 11g is provided on the axial end face of the first socket 11. For example, the third annular groove 11g is provided on the axial end face of the base 11a. The bottom of the sealing member 30 is provided with an annular protrusion 35. During installation, the annular protrusion 35 on the sealing member 30 can be embedded in the third annular groove 11g first, and then the second socket 22 can be fixed to the first socket 11. After the second socket 22 is fixed to the first socket 11, the second socket 22 automatically inserts into the slot 31 of the sealing member 30. Alternatively, the sealing member 30 can be fitted onto the end of the second socket 22 first. After the second socket 22 is fixed to the first socket 11, a part of the sealing member 30 is embedded in the third annular groove 11g. This structure can also improve the sealing performance.

[0065] Fourth embodiment

[0066] like Figure 13 As shown, the difference between this embodiment and the first embodiment is that the first socket 11 is provided with a first circumferential engagement portion 11d and an elastic buckle 11e. The second socket 22 is annular, and a second circumferential engagement portion 223 is provided on the outer circumferential surface of the second socket 22. A buckle portion 24 is provided on the outer circumferential surface of the movable plug 20. When the second socket 22 and the first socket 11 are engaged, the second circumferential engagement portion 223 engages with the first circumferential engagement portion 11d to fix the movable second socket 22 and the first socket 11 in a circumferential manner. The first circumferential engagement portion 11d is at least one set, and each set includes two spaced blocks, with a engagement groove formed between the two blocks. The second circumferential engagement portion 223 is a protrusion that is inserted into the engagement groove between two adjacent blocks, thereby fixing the movable plug 20 and the first socket 11 in a circumferential manner.

[0067] The elastic buckle 11e is pressed onto the fastening part 24 to fix the movable plug 20 to the first socket part 11, thereby preventing the movable plug 20 and the first socket part 11 from moving relative to each other axially.

[0068] like Figure 14As shown, when assembling the movable plug 20 with the first socket 11, the second socket 22 is inserted into the groove 11c of the first socket 11, and the second circumferential joint 223 is engaged with the first circumferential joint 11d, so that the second socket 22 and the first socket 11 are circumferentially fixed. The second socket 22 continues to be fed along the axial direction of the first socket 11, and the fastening part 24 squeezes the elastic buckle 11e and swings. When the conductive part 23 presses on the conductive component 12 and the sealing component is pressed between the second socket 22 and the base 11a, the elastic buckle 11e will also reset and be fastened on the fastening part 24.

[0069] Therefore, the fourth embodiment involves inserting the second socket portion on the movable plug 20 into the first socket portion 11, and inserting the second circumferential joint portion 223 into the first circumferential joint portion 11d to fix the second socket portion 22 and the first socket portion 11 in a circumferential direction, so as to prevent the second socket portion 22 and the first socket portion 11 from rotating circumferentially relative to each other. Furthermore, the elastic buckle 11e is pressed onto the fastening portion 24 to prevent the second socket portion 22 and the first socket portion 11 from disengaging along the axial direction.

[0070] When it is necessary to replace the movable plug 20, apply pressure to the end of the elastic buckle 11e to release the elastic buckle 11e from the fastening part 24, pull out the movable plug 20, and assemble the movable plug to be replaced according to the above assembly process.

[0071] Fifth Embodiment

[0072] like Figure 15 and Figure 16 As shown, this embodiment differs from the first embodiment in that: the first socket 11 includes a column 110, with a first annular groove 111 on its circumferential surface and a radial protrusion 112 on its circumferential surface. A sealing member 30 is fitted onto the column 110, with its other end supported by the radial protrusion 112. A portion of the sealing member 30 engages with the first annular groove 111. After the second socket 22 is connected to the first socket 11, the end of the second socket 22 engages with the slot 31. The second socket 22 and the column 110 of the first socket 11 are preferably connected by a thread, but can also be connected by a snap-fit ​​connection as in the fourth embodiment.

[0073] Sixth Embodiment

[0074] like Figures 17 to 20 The difference between this embodiment and the above embodiments one to five is that the conductive part 23 includes a first conductive part 23a and a second conductive part 23b. The first conductive part 23a is connected to the power connection pin 21, the second conductive part 23b is connected to the first conductive part 23a, and a first opening 23c is provided on the peripheral surface of the second conductive part 23b or the conductive component 12.

[0075] When the second socket 22 and the first socket 11 are rotated together, the conductive component 12 abuts against the second conductive part 23b after passing through the first opening 23c on the second conductive part 23b, or the second conductive part 23b abuts against the conductive component 12 after passing through the first opening on the conductive component 12.

[0076] This structure allows the second conductive part 23b to abut against the peripheral surface of the conductive component 12, and the conductive component 12 and the second conductive part 23b to generate radial forces against each other, ensuring that the second conductive part 23b and the conductive component 12 conduct electricity. This method allows the conductive component 12 to be configured as a tube or a sheet.

[0077] Preferably, the second conductive part 23b includes a sleeve part 23b1 and an abutment part 23b2 connected to the sleeve part 23b1. A first opening 23c is provided on the abutment part 23b2. An opening 23d is provided on the sleeve part 23b1. The first conductive part 23a is inserted into the sleeve part 23b1 and tightened. The second sleeve part 22 and the first sleeve part 11 are rotated together so that the second conductive part 23b abuts against the conductive component 12. The conductive component 12 and the second conductive part 23b generate radial forces against each other.

[0078] By providing an opening 23d, when the first conductive part 23a is inserted into the sleeve part 23b1, the sleeve part 23b1 can expand and deform. At the same time, the sleeve part 23b1 accumulates elastic potential energy and hugs the first conductive part 23a, thereby making the connection between the sleeve part 23b1 and the first conductive part 23a reliable.

[0079] The conductive part 23 also includes a limiting foot 23h provided on the second conductive part 23b. The inner wall of the movable plug and / or the second socket part 22 is provided with an assembly groove 22a. The limiting foot 23h cooperates with the assembly groove 22a, which can prevent the second conductive part 23b from rotating circumferentially relative to the first conductive part 23a.

[0080] Seventh Embodiment

[0081] As can be seen from the fourth embodiment described above, the second socket 22 and the first socket 11 are engaged by a plug-in connection, thereby fixing the movable plug 20 to the first socket 11. Figure 21 This embodiment is a variation of the sixth embodiment. Specifically, an insertion hole is provided on the axial end face of the conductive component 12 or the second conductive part 23b. When the second sleeve part 22 and the first sleeve part 11 are connected by insertion, the second conductive part 23b is inserted into the insertion hole on the conductive component 12, or the conductive component 12 is inserted into the insertion hole 23g on the second conductive part 23b. The insertion of the second conductive part 23b and the conductive component 12 is not only convenient, but also simple in structure.

[0082] If a socket 23g is provided on the second conductive part 23b, a radial opening communicating with the socket can be provided on the peripheral surface of the second conductive part 23b to ensure that the second conductive part 23b is not damaged when the conductive component 12 is inserted into the socket 23g on the second conductive part 23b. Similarly, if a socket is provided on the conductive component 12, a radial opening communicating with the socket can be provided on the peripheral surface of the conductive component 12 to ensure that the conductive component 12 is not damaged when the second conductive part 23b is inserted into the socket on the conductive component 12.

[0083] To ensure that the second conductive part 23b does not detach from the first conductive part 23a during insertion and removal, i.e., to ensure the stability of the connection between the second conductive part 23b and the first conductive part 23a, the second conductive part 23b includes a sleeve part 23b1 and an abutment part 23b2 connected to the sleeve part 23b1. An insertion hole 23g is provided on the abutment part 23b2. An opening 23d is provided on the sleeve part 23b1. A first positioning part 23e is provided on the circumferential surface of the first conductive part 23a. A second positioning part 23f is provided at the end of the first conductive part 23a. After the first conductive part 23a passes through the sleeve part 23b1, both ends of the sleeve part 23b1 are limited by the first positioning part 23e and the second positioning part 23f, respectively. After the second socket part 22 and the first socket part 11 are connected by insertion, the second conductive part 23b is connected to the conductive component 12, and the conductive component 12 and the second conductive part 23b generate an axial force on each other.

[0084] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the scope of protection of the claims of the present invention.

Claims

1. A waterproof power adapter with a replaceable plug, comprising a power adapter body (10) and a movable plug (20), wherein the power adapter body (10) is provided with a first socket (11), a conductive component (12) is provided on the first socket (11), and the movable plug (20) is provided with a second socket (22) on the opposite side of the power-connecting pin (21) and a conductive part (23) connected to the power-connecting pin (21), characterized in that, Both the second socket (22) and the first socket (11) are provided with threads (B), and the second socket (22) and the first socket (11) are fixedly connected by threads; It also includes a sealing component (30). After the second socket (22) is fixed to the first socket (11), the conductive part (23) cooperates with the conductive component (12) and forms a cavity (A) between the first socket (11), the movable plug (20) and the second socket (22). The conductive part (23) and the conductive component (12) are located inside the cavity (A). The sealing component (30) cooperates with the second socket (22) and the first socket (11) respectively, so that the cavity (A) becomes a sealed cavity. The first socket (11) includes a base (11a) and an annular part (11b) fixed to the second socket (22). One end of the base (11a) is fixed to the power adapter body (10). After the other end of the base (11a) is fixed to the annular part (11b), a groove (11c) is formed between the base (11a) and the annular part (11b). The conductive component (12) includes a first conductive member (120) that passes through and is fixed to the first socket (11), a connecting piece (121), and a spring piece for cooperating with the conductive part (23). The connecting piece (121) is connected to one end of the first conductive member (120). The spring piece includes a first bent part (122) for elastic deformation when subjected to force and a conductive contact part (123). The two ends of the first bent part (122) are fixed to one end of the connecting piece (121) and one end of the conductive contact part (123), respectively. An angle is formed between the conductive contact part (123) and the first socket (11). The second socket (22) is annular. After the second socket (22) is fixed with the first socket (11), the sealing component (30) is located in the groove (11c). It also includes a latching mechanism for preventing the movable plug (20) from rotating in the opposite direction. The latching mechanism includes a first elastic arm (13) provided on the first socket (11). The first elastic arm (13) has a first latching tooth (14) on its axial end face. The latching mechanism also includes a latching part (24) provided on the movable plug (20). The latching part (24) has a slot (25) on its axial end face for engaging with the first latching tooth (14). The number of the first latching tooth (14) and the slot (25) is one. The first socket (11) has a clearance opening (15) for the first elastic arm (13) to make way when it undergoes elastic deformation. The clearance opening (15) is located on the annular part (11b). The first elastic arm (13) is located inside the clearance opening (15). The first elastic arm (13) is arranged along the circumference of the first socket (11). The sealing component (30) is fitted onto the end of the second socket (22), and the second socket (22) is inserted into the groove (11c) of the first socket (11). The movable plug (20) is rotated so that the thread (B) on the second socket (22) engages with the thread (B) on the first socket (11). Finally, the second socket (22) and the first socket (11) are fixed by the threaded connection, and the conductive part (23) is pressed against the conductive component (12) to form an electrical conduction fit. The sealing component (30) is pressed tightly against the second socket. Between part (22) and base (11a); in addition, during the rotation of movable plug (20), the snap-fit ​​part (24) on movable plug (20) applies pressure to the first snap tooth (14) to make the first elastic arm (13) swing in the relief opening (15). The first elastic arm (13) accumulates elastic potential energy. When the second socket part (22) can no longer rotate relative to the first socket part (11), the first elastic arm (13) resets, and the first snap tooth (14) is just locked in the slot (25). The first snap tooth (14) and the snap-fit ​​part (24) are engaged with each other.

2. The waterproof power adapter with replaceable plug according to claim 1, characterized in that, The other end of the conductive contact (123) is bent to form a support (124) for limiting the swing amplitude of the conductive contact (123) after it comes into contact with the first socket (11), and there is a gap between the support (124) and the first socket (11).

3. The waterproof power adapter with replaceable plug according to claim 1, characterized in that, The end of the second socket (22) is provided with a plug-in boss (220), and the sealing member (30) is annular and has a slot (31) on the end face facing the second socket (22). The plug-in boss (220) and the slot (31) cooperate.

4. The waterproof power adapter with replaceable plug according to claim 1, characterized in that, An annular boss (221) is provided on the circumferential surface of the insertion boss (220), and a second annular groove (222) is formed between the annular boss (221), the insertion boss (220), and the second socket (22). One end of the sealing component (30) is also provided with a fitting part (32), which cooperates with the second annular groove (222) to form a fitting groove (33) between the fitting part (32), the sealing component (30), and the slot (31), and the annular boss (221) cooperates with the fitting groove (33).

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