AC elastic sheet and circular conversion type power adapter

Abstract

The utility model provides an AC elastic sheet and a circular conversion type power adapter, and relates to the technical field of power adapters. The AC elastic sheet is installed in a circular conversion type power adapter and comprises a first arc-shaped elastic sheet, a second arc-shaped elastic sheet and a double-sided contact part, the first arc-shaped elastic piece and the second arc-shaped elastic piece are oppositely arranged and are recessed in the direction away from each other to form a circular area. The first arc-shaped elastic piece is provided with a first installation hole, the second arc-shaped elastic piece is provided with a second installation hole, and the first installation hole and the second installation hole are used for being matched with the plug pin in an inserted mode. The number of the double-face contact parts is four, the four double-face contact parts are evenly installed on the first arc-shaped elastic piece and the second arc-shaped elastic piece at intervals in the circumferential direction of the circular area, and the double-face contact parts are provided with grooves which are used for being matched with conductive needles in an inserted mode. The AC elastic sheet provided by the utility model solves the technical problems that a power adapter is inconvenient to use and the contact stability of the AC elastic sheet and the conductive needle is poor in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of power adapters, in particular to an AC spring and a circular conversion type power adapter. Background Art

[0002] The power adapter is an auxiliary device used to charge small electrical appliances. The power adapter can only be used in one direction, that is, the direction of the plug is fixed, and there is a problem that users cannot use the power adapter to charge due to insufficient socket space; and the AC spring and the conductive pin are in single-electric or single-sided contact for conduction, which has the problem of poor contact stability. Utility Model Content

[0003] The utility model aims to provide an AC spring and a circular conversion power adapter to alleviate the technical problems in the prior art that the power adapter is inconvenient to use and the contact stability between the AC spring and the conductive pin is poor.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0005] In a first aspect, the AC spring provided by the utility model is installed in a circular conversion power adapter, comprising a first arc-shaped spring, a second arc-shaped spring and a double-sided contact portion;

[0006] The first arc-shaped spring piece and the second arc-shaped spring piece are arranged opposite to each other and are respectively recessed in a direction away from each other to form a circular area;

[0007] A first mounting hole is provided in the middle of the first arc-shaped spring piece, and a second mounting hole is provided at the end of the second arc-shaped spring piece. The first mounting hole and the second mounting hole are parallel, and the first mounting hole and the second mounting hole are used for plugging and matching with the pin;

[0008] There are four double-sided contact parts, which are evenly spaced and installed on the first arc-shaped spring piece and the second arc-shaped spring piece along the circumference of the circular area, and the double-sided contact part has a groove extending along the circumference of the circular area, and the groove is used for plugging and mating with the conductive pin.

[0009] Furthermore, the double-sided contact portion includes two contact walls arranged opposite to each other to form the groove;

[0010] One end of the contact wall is connected to the first arc-shaped elastic piece or the second arc-shaped elastic piece, and the other end is provided with a protrusion protruding toward the direction of the groove.

[0011] Furthermore, the cross section of the protrusion is set to be V-shaped.

[0012] Furthermore, the contact wall is provided with a process hole.

[0013] In a second aspect, the circular conversion power adapter provided by the utility model comprises an adapter assembly, a main body assembly and an AC spring as described in any one of the above items;

[0014] The adapter assembly includes two pins, the first arc-shaped spring sheet and the second arc-shaped spring sheet in the AC spring sheet are both installed in the adapter assembly, and the two pins are respectively connected to the first mounting hole and the second mounting hole;

[0015] The adapter assembly is connected to the main body assembly, and two opposite double-sided contact portions in the AC spring are plugged and matched with two conductive pins of the main body assembly.

[0016] Furthermore, the adapter assembly includes an adapter and an insulating cover, the insulating cover is provided with four avoidance holes, and the four avoidance holes are evenly spaced along the circumference of the insulating cover;

[0017] The first arc-shaped spring piece and the second arc-shaped spring piece are clamped between the adapter and the insulating cover, and the four double-sided contact portions correspond to the four avoidance holes respectively.

[0018] Furthermore, the insulating cover and the adapter are connected by fasteners.

[0019] Furthermore, the outer wall of the adapter is provided with a plurality of mounting protrusions, and the plurality of mounting protrusions are arranged at intervals along the circumference of the adapter;

[0020] The main body component is provided with a mounting groove, and the inner wall of the mounting groove is correspondingly provided with a plurality of mounting card slots, the adapter is inserted into the mounting groove, and the plurality of mounting protrusions are inserted into the plurality of mounting card slots one by one.

[0021] Furthermore, the main body assembly includes a first housing, a conductive pin, a built-in board and a second housing;

[0022] The first shell is installed at the open end of the second shell and is provided with the installation groove;

[0023] The built-in machine board is installed in the second shell, and two conductive pins are provided. The two conductive pins are arranged in parallel and spaced apart, and one end of the conductive pin is electrically connected to the built-in machine board, and the other end extends into the first shell.

[0024] Furthermore, the conductive pin is connected to the built-in board via a wire.

[0025] Based on the above technical solutions, the technical effects that can be achieved by the present invention are analyzed as follows:

[0026] The AC spring provided by the utility model is installed in a circular conversion power adapter, and comprises a first arc-shaped spring piece, a second arc-shaped spring piece and a double-sided contact portion; the first arc-shaped spring piece and the second arc-shaped spring piece are arranged opposite to each other, and are respectively recessed in a direction away from each other to form a circular area; a first mounting hole is provided in the middle of the first arc-shaped spring piece, and a second mounting hole is provided at the end of the second arc-shaped spring piece, the first mounting hole and the second mounting hole are parallel, and the first mounting hole and the second mounting hole are used for plugging and matching with the pin; four double-sided contact portions are provided, and the four double-sided contact portions are evenly spaced and installed on the first arc-shaped spring piece and the second arc-shaped spring piece along the circumference of the circular area, and the double-sided contact portion has a groove extending along the circumference of the circular area, and the groove is used for plugging and matching with the conductive pin.

[0027] When using the AC spring clip, the first mounting hole and the second mounting hole are matched with the two pins, and two of the four double-sided contact parts are matched with the two conductive pins, so that the power adapter can be used normally. Because the four double-sided contact parts are evenly arranged along the circumference of the circular area, the direction of the power adapter can be changed by adjusting the two conductive pins to match with different double-sided contact parts, and 90°, 180°, 270° and 360° can be provided, solving the problem that users cannot use the adapter to charge due to insufficient space in the power strip. Because the double-sided contact part has a groove, both side walls of the groove are in contact with the conductive pin, so that the AC spring clip and the conductive pin can be in double-sided contact, which improves the contact stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of a conductive pin in a circular conversion type power adapter provided by an embodiment of the utility model;

[0030] Figure 2 A schematic diagram of a circular conversion power adapter provided by an embodiment of the utility model with a use direction of 90°;

[0031] Figure 3 A schematic diagram of a circular conversion power adapter provided by an embodiment of the utility model with a use direction of 180°;

[0032] Figure 4 A schematic diagram of a circular conversion power adapter provided by an embodiment of the utility model with a use direction of 270°;

[0033] Figure 5 A schematic diagram of a circular conversion power adapter provided by an embodiment of the utility model with a usage direction of 360°;

[0034] Figure 6 A schematic diagram of an AC spring provided in an embodiment of the utility model;

[0035] Figure 7 A schematic diagram of the assembly process of a circular conversion power adapter provided by an embodiment of the utility model;

[0036] Figure 8 A schematic diagram of a circular conversion power adapter provided by an embodiment of the utility model;

[0037] Fig. 9 A schematic diagram of an insulating protective cover in a circular conversion type power adapter provided by an embodiment of the utility model;

[0038] Fig.10 Schematic diagram of the transfer connector of the circular conversion power adapter provided by the embodiment of the utility model Figure 1 ;

[0039] Fig.11 Schematic diagram of the transfer connector of the circular conversion power adapter provided by the embodiment of the utility model Figure 2 ;

[0040] Fig.12 A schematic diagram of a first housing in a circular conversion power adapter provided in an embodiment of the utility model.

[0041] icon:

[0042] 100 - first arc-shaped spring piece; 110 - first mounting hole;

[0043] 200 - second arc-shaped spring piece; 210 - second mounting hole;

[0044] 300-double-sided contact portion; 310-groove; 320-contact wall; 321-protrusion; 322-process hole;

[0045] 400-adapter; 410-mounting protrusion; 420-adapter chamber;

[0046] 500-insulating cover; 510-avoidance hole; 520-first limiter;

[0047] 600-fasteners;

[0048] 700 - first housing; 710 - bottom plate; 711 - second stopper; 720 - annular plate; 730 - conductive pin; 740 - wire; 750 - built-in board;

[0049] 800-Second shell. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0053] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0054] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0055] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0057] Embodiment 1

[0058] The power adapter is an auxiliary device for charging small electrical appliances. The power adapter can only be used in one direction, that is, the direction of the plug is fixed, and there is a problem that the user cannot use the power adapter to charge due to insufficient socket space; and the AC spring and the conductive pin 730 are in single-electric or single-sided contact for conduction, which has the problem of poor contact stability.

[0059] In view of this, the AC spring provided by the embodiment of the utility model is installed in a circular conversion power adapter, including a first arc-shaped spring piece 100, a second arc-shaped spring piece 200 and a double-sided contact portion 300; the first arc-shaped spring piece 100 and the second arc-shaped spring piece 200 are arranged opposite to each other, and are respectively recessed in a direction away from each other to form a circular area; a first mounting hole 110 is provided in the middle of the first arc-shaped spring piece 100, and a second mounting hole 210 is provided at the end of the second arc-shaped spring piece 200, the first mounting hole 110 and the second mounting hole 210 are parallel, and the first mounting hole 110 and the second mounting hole 210 are used for plugging and matching with the pin; four double-sided contact portions 300 are provided, and the four double-sided contact portions 300 are evenly spaced and installed on the first arc-shaped spring piece 100 and the second arc-shaped spring piece 200 along the circumference of the circular area, and the double-sided contact portion 300 has a groove 310 extending along the circumference of the circular area, and the groove 310 is used for plugging and matching with the conductive pin 730.

[0060] Specifically, see Figure 6 The first mounting hole 110 and the second mounting hole 210 are both set to be square and have the same size. Figures 1 to 5 , Figure 1 is a schematic diagram of a conductive needle 730, Figure 2 This is a schematic diagram of the power adapter using a 90° direction. Figure 3 This is a schematic diagram of the power adapter using direction of 180°. Figure 4 This is a schematic diagram of the power adapter using direction of 270°. Figure 5It is a schematic diagram showing that the use direction of the power adapter is 360°. By connecting different double-sided contact portions 300 of the AC spring to the conductive pin 730 , the use direction of the power adapter can be adjusted.

[0061] When using the AC spring clip, the first mounting hole 110 and the second mounting hole 210 are matched with two pins, and two of the four double-sided contact parts 300 are matched with two conductive pins 730, so that the power adapter can be used normally. Because the four double-sided contact parts 300 are evenly arranged along the circumference of the circular area, the direction of the power adapter can be changed by adjusting the two conductive pins 730 to match different double-sided contact parts 300, and 90°, 180°, 270° and 360° can be provided, which solves the problem that the user cannot use the adapter to charge due to insufficient power strip space. Because the double-sided contact part 300 has a groove 310, both side walls of the groove 310 are in contact with the conductive pin 730, and the AC spring clip and the conductive pin 730 are in double-sided contact, which will not cause abnormal problems such as sparking due to single-sided or single-point contact, thereby improving the contact stability and extending the service life of the AC spring clip.

[0062] The following is a detailed description of the structure and shape of the AC shrapnel:

[0063] In an optional solution of the embodiment of the utility model, the double-sided contact portion 300 includes two oppositely arranged contact walls 320 forming a groove 310; one end of the contact wall 320 is connected to the first arc-shaped spring piece 100 or the second arc-shaped spring piece 200, and the other end is provided with a protrusion 321 protruding in the direction of the groove 310.

[0064] Specifically, see Figure 6 The double-sided contact portion 300 is integrally formed with the first arc-shaped spring sheet 100 or the second arc-shaped spring sheet 200, that is, the spring sheet is bent to form the first arc-shaped spring sheet 100 and the second arc-shaped spring sheet 200 having the double-sided contact portion 300. The two contact walls 320 are arranged opposite to each other to form a groove 310. When in use, the opposite surfaces of the two contact walls 320 are in contact with the conductive needle 730, which increases the contact area and improves the contact stability. The contact wall 320 is provided with a protrusion 321, so that the width of the top of the groove 310 is smaller than the width of the bottom of the groove 310, so that the conductive needle 730 is sandwiched between the two contact walls 320, and the contact stability between the groove 310 and the conductive needle 730 is further improved.

[0065] The two contact walls 320 enable the double-sided contact portion 300 to have a groove 310 ; the contact wall 320 is provided with a protrusion 321 , which improves the contact stability between the groove 310 and the conductive needle 730 .

[0066] In an optional solution of the embodiment of the utility model, the cross section of the protrusion 321 is set to be V-shaped.

[0067] Specifically, the middle portion of the contact wall 320 is bent toward the groove 310 to form a protrusion 321 .

[0068] The cross section of the protrusion 321 is set to be V-shaped, which enhances the elasticity of the contact wall 320.

[0069] In an optional solution of the embodiment of the present utility model, the contact wall 320 is provided with a process hole 322 .

[0070] Specifically, the process hole 322 penetrates the contact wall 320 along the thickness direction of the contact wall 320 , and the process hole 322 is configured in a square shape.

[0071] The process holes 322 reduce the cost and weight of the contact wall 320 .

[0072] Embodiment 2

[0073] The circular conversion power adapter provided in the embodiment of the utility model includes the AC spring in the first embodiment, and thus has all the beneficial effects in the first embodiment, which will not be described in detail here.

[0074] In an optional scheme of an embodiment of the utility model, the circular conversion power adapter also includes an adapter assembly and a main body assembly; the adapter assembly includes two pins, the first arc-shaped spring clip 100 and the second arc-shaped spring clip 200 in the AC spring clip are both installed in the adapter assembly, and the two pins are respectively connected to the first mounting hole 110 and the second mounting hole 210; the adapter assembly is connected to the main body assembly, and the two opposite double-sided contact portions 300 in the AC spring clip are plugged into and matched with the two conductive pins 730 of the main body assembly.

[0075] Specifically, the first mounting hole 110 and the second mounting hole 210 are riveted to two pins respectively, and the two conductive pins 730 are inserted into the grooves 310 of the two double-sided contact parts 300. Figures 1 to 5 , Figure 1 is a schematic diagram of a conductive needle 730, Figure 2 This is a schematic diagram of the power adapter using a 90° direction. Figure 3 This is a schematic diagram of the power adapter using direction of 180°. Figure 4 This is a schematic diagram of the power adapter using direction of 270°. Figure 5 It is a schematic diagram showing that the use direction of the power adapter is 360°. By connecting different double-sided contact portions 300 of the AC spring to the conductive pins 730 , the use direction of the circular conversion power adapter can be adjusted.

[0076] The first mounting hole 110 and the second mounting hole 210 are matched with two pins, and two of the four double-sided contact parts 300 are matched with two conductive pins 730, so that the circular conversion power adapter can be used normally. Because the four double-sided contact parts 300 are evenly arranged along the circumference of the circular area, by adjusting the two conductive pins 730 to match with different double-sided contact parts 300, the direction of the circular conversion power adapter can be changed, and 90°, 180°, 270° and 360° can be provided, which solves the problem that users cannot use the adapter to charge due to insufficient power strip space. Because the double-sided contact part 300 has a groove 310, both side walls of the groove 310 are in contact with the conductive pin 730, and the AC spring and the conductive pin 730 are in double-sided contact, which improves the contact stability.

[0077] In an optional scheme of an embodiment of the utility model, the adapter assembly includes an adapter 400 and an insulating cover 500, the insulating cover 500 is provided with four avoidance holes 510, and the four avoidance holes 510 are evenly spaced along the circumference of the insulating cover 500; the first arc-shaped spring piece 100 and the second arc-shaped spring piece 200 are clamped between the adapter 400 and the insulating cover 500, and the four double-sided contact portions 300 correspond to the four avoidance holes 510 respectively.

[0078] Specifically, see Fig.10 and Fig.11 The cross-sections of the adapter 400 and the insulating cover 500 are both set to be circular; the adapter 400 is provided with an adapter chamber 420, and the bottom wall of the adapter chamber 420 is provided with a spring slot, the first arc spring 100 and the second arc spring 200 are installed in the spring slot and connected to the pin; the insulating cover 500 is installed in the adapter chamber 420, and the first arc spring 100 and the second arc spring 200 are fixed in the spring slot. Fig. 9 The four avoidance holes 510 correspond to the four double-sided contact parts 300 one by one, so as to prevent the insulating cover 500 from affecting the plug-in cooperation between the double-sided contact parts 300 and the conductive pins 730 .

[0079] The adapter 400 and the insulating cover 500 cooperate to install and fix the first arc-shaped spring piece 100 and the second arc-shaped spring piece 200 .

[0080] In an optional solution of the embodiment of the utility model, the insulating cover 500 and the adapter 400 are connected by a fastener 600 .

[0081] Specifically, the fastener 600 is configured as a screw, and the screw passes through the insulating cover 500 and is threadedly connected to the adapter 400 .

[0082] The insulating cover 500 and the adapter 400 are detachably connected by screws, so as to facilitate assembly or disassembly of the adapter assembly.

[0083] In an optional scheme of an embodiment of the utility model, the outer wall of the adapter 400 is provided with a plurality of mounting protrusions 410, and the plurality of mounting protrusions 410 are arranged at intervals along the circumference of the adapter 400; the main body component is provided with a mounting groove, and the inner wall of the mounting groove is correspondingly provided with a plurality of mounting card grooves, the adapter 400 is inserted into the mounting groove, and the plurality of mounting protrusions 410 are inserted into the plurality of mounting card grooves one by one.

[0084] Specifically, see Fig. 9 and Fig.12 A plurality of first limiting members 520 are provided at the bottom of the insulating cover 500, and the plurality of first limiting members 520 are evenly spaced along the circumference of the insulating cover 500. A plurality of second limiting members 711 are correspondingly provided at the bottom of the mounting groove, and the plurality of first limiting members 520 are correspondingly connected with the plurality of second limiting members 711.

[0085] Multiple mounting protrusions 410 and multiple mounting slots are evenly arranged, so that the adapter 400 can be converted to different directions and installed in the mounting slot, thereby realizing the change of direction of the circular convertible power adapter, and can provide 90°, 180°, 270° and 360° use, solving the problem that users cannot use the adapter to charge due to insufficient socket space.

[0086] In an optional scheme of an embodiment of the utility model, the main body component includes a first shell 700, a conductive pin 730, a built-in machine board 750 and a second shell 800; the first shell 700 is installed at the open end of the second shell 800 and is provided with a mounting groove; the built-in machine board 750 is installed in the second shell 800, and two conductive pins 730 are provided, and the two conductive pins 730 are arranged in parallel and spaced apart, and one end of the conductive pin 730 is electrically connected to the built-in machine board 750, and the other end extends into the first shell 700.

[0087] Specifically, see Fig.12 The first housing 700 includes a bottom plate 710 and an annular plate 720 located on the bottom plate 710, the annular plate 720 forms a mounting groove, one end of the conductive pin 730 is electrically connected to the built-in machine board 750, and the other end passes through the bottom plate 710 and extends into the annular plate 720; the second housing 800 is set to a square shape, and the bottom plate 710 is installed at the open end of the second housing 800. Of course, the second housing 800 is set to a circular shape, etc., which should also be within the protection scope of the embodiment of the utility model.

[0088] The first housing 700 is used to install the adapter assembly, and the second housing 800 is used to install the built-in board 750 .

[0089] In an optional solution of the embodiment of the present invention, the conductive pin 730 is connected to the built-in board 750 via a wire 740 .

[0090] Specifically, the second housing 800 is also equipped with an output line, one end of which extends into the second housing 800 and is connected to the built-in board 750, and the other end extends out of the second housing 800. The wire 740 is welded to the conductive pin 730 and the built-in board 750.

[0091] The wire 740 realizes the electrical connection between the conductive pin 730 and the built-in board 750 .

[0092] The following is a detailed description of the assembly method of the circular conversion power adapter, see Figure 7 and Figure 8 :

[0093] First assemble the adapter assembly:

[0094] After the first arc-shaped spring piece 100 and the second arc-shaped spring piece 200 are placed into the spring piece groove of the adapter 400 corresponding to the pins, the insulating cover 500 is placed into the adapter chamber 420 of the adapter 400, and the four double-sided contact parts 300 correspond to the four avoidance holes 510 one by one, and the screws pass through the insulating cover 500 and are threadedly connected to the adapter 400.

[0095] Then assemble the main components:

[0096] The conductive pin 730 is installed on the first housing 700 , and two ends of the wire 740 are respectively welded to the conductive pin 730 and the built-in board 750 , connecting the built-in board 750 and the output line, and the second housing 800 is connected to the first housing 700 .

[0097] Finally assemble the adapter assembly and the main assembly:

[0098] The adapter 400 is inserted into the installation slot of the first housing 700 according to the required direction, and two of the four double-sided contact portions 300 are connected to the two conductive pins 730 .

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An AC spring, installed in a circular conversion power adapter, characterized in that: include: A first arc-shaped spring piece (100), a second arc-shaped spring piece (200) and a double-sided contact portion (300); The first arc-shaped spring piece (100) and the second arc-shaped spring piece (200) are arranged opposite to each other and are respectively recessed in a direction away from each other to form a circular area; A first mounting hole (110) is provided in the middle of the first arc-shaped spring piece (100), and a second mounting hole (210) is provided at the end of the second arc-shaped spring piece (200), the first mounting hole (110) and the second mounting hole (210) are parallel, and the first mounting hole (110) and the second mounting hole (210) are used for plugging and matching with the plug pin; Four double-sided contact parts (300) are provided, and the four double-sided contact parts (300) are evenly spaced and installed on the first arc-shaped spring piece (100) and the second arc-shaped spring piece (200) along the circumference of the circular area, and the double-sided contact part (300) has a groove (310) extending along the circumference of the circular area, and the groove (310) is used for plugging and matching with the conductive pin (730).

2. The AC spring according to claim 1, characterized in that: The double-sided contact portion (300) comprises two contact walls (320) arranged opposite to each other to form the groove (310); One end of the contact wall (320) is connected to the first arc-shaped elastic piece (100) or the second arc-shaped elastic piece (200), and the other end is provided with a protrusion (321) protruding in the direction of the groove (310).

3. The AC spring according to claim 2, characterized in that: The cross section of the protrusion (321) is arranged to be V-shaped.

4. The AC spring according to claim 3, characterized in that: The contact wall (320) is provided with a process hole (322).

5. A circular conversion power adapter, characterized in that: It comprises an adapter assembly, a main body assembly and an AC spring as described in any one of claims 1 to 4; The adapter assembly comprises two plug pins, a first arc-shaped spring sheet (100) and a second arc-shaped spring sheet (200) in the AC spring sheet are both installed in the adapter assembly, and the two plug pins are respectively connected to the first mounting hole (110) and the second mounting hole (210); The adapter assembly is connected to the main body assembly, and two opposite double-sided contact portions (300) in the AC spring are plugged into and matched with two conductive pins (730) of the main body assembly.

6. The circular conversion power adapter according to claim 5, characterized in that: The adapter assembly comprises an adapter (400) and an insulating protective cover (500), wherein the insulating protective cover (500) is provided with four avoidance holes (510), and the four avoidance holes (510) are evenly spaced along the circumference of the insulating protective cover (500); The first arc-shaped spring piece (100) and the second arc-shaped spring piece (200) are sandwiched between the adapter (400) and the insulating protective cover (500), and the four double-sided contact portions (300) correspond to the four avoidance holes (510) respectively.

7. The circular conversion power adapter according to claim 6, characterized in that: The insulating protective cover (500) and the adapter (400) are connected by a fastener (600).

8. The circular conversion power adapter according to claim 6, characterized in that: The outer wall of the adapter (400) is provided with a plurality of mounting protrusions (410), and the plurality of mounting protrusions (410) are arranged at intervals along the circumference of the adapter (400); The main body component is provided with a mounting groove, and the inner wall of the mounting groove is correspondingly provided with a plurality of mounting slots, the adapter (400) is inserted into the mounting groove, and the plurality of mounting protrusions (410) are inserted into the plurality of mounting slots in a one-to-one correspondence.

9. The circular conversion power adapter according to claim 8, characterized in that: The main body assembly comprises a first housing (700), a conductive pin (730), a built-in board (750) and a second housing (800); The first shell (700) is installed at the open end of the second shell (800) and is provided with the installation groove; The built-in machine board (750) is installed in the second shell (800), and two conductive pins (730) are provided. The two conductive pins (730) are arranged in parallel and spaced apart, and one end of the conductive pin (730) is electrically connected to the built-in machine board (750), and the other end extends into the first shell (700).

10. The circular conversion power adapter according to claim 9, characterized in that: The conductive pin (730) is connected to the built-in board (750) via a wire (740).

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