Transformation power supply adapter

Abstract

The utility model is suitable for the technical field of power adapters, and provides a voltage transformation power adapter, which comprises a shell, a cavity structure is formed in the shell, the shell is used for installing a control circuit, a plurality of groups of plugs and a voltage transformation knob, and the shell is provided with a plurality of groups of jacks and a plurality of groups of first positioning holes, the jack is electrically connected with an equipment power line; the plurality of groups of plugs are used for being electrically connected with different types of power sockets; the voltage transformation knob is used for adjusting the output voltage of the adapter. According to the utility model, the plurality of groups of jacks are arranged to facilitate the adaptation and electric connection of the transformation power supply adapter and a power line of equipment, the plurality of groups of plugs are arranged and the plugs are driven to slide by using the sliding pieces so that the plurality of groups of plugs can be selected and electrically connected according to different types of power supply sockets, and the transformation knob is arranged to be electrically connected with the control circuit. A user does not need to reserve a plurality of different types of adapters at the same time, and the problems that the using and carrying processes are tedious, troublesome, labor-consuming and cost-consuming are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power adapters, and particularly relates to a variable voltage power conversion head. Background Technique

[0002] A power conversion head, usually referring to a power adapter or a transformer, its main function is to convert one voltage into another voltage to meet the power supply requirements of different devices. Common application fields of power conversion heads include: household appliances, office equipment, portable electronic devices, medical devices, industrial automation, communication devices, lighting systems, electric vehicles, aviation and navigation, laboratory equipment, etc. The design and function of a power conversion head depend on the specific requirements of its application, and usually factors such as conversion efficiency, safety, stability, and compatibility also need to be considered.

[0003] A power conversion head mainly consists of components such as input terminals, output terminals, transformers, rectifiers, filters, voltage regulators, shells, heat dissipation devices, and indicator lights. Generally, the power cord is connected through the input terminals to access the power supply, and the converted voltage is provided for the device by using the terminals connected to the device.

[0004] In the prior art, due to world cultural differences, there are differences in power sockets and power conversion heads used in many countries. For example, the power sockets and voltages in China and the United States are different. When going to different places, it is necessary to prepare the locally adapted power conversion head in advance, and a device with a voltage conversion function is also needed to adjust the input voltage to the voltage adapted to the electrical appliance, so that the devices that need to connect to the power supply can use the power supply with different local voltages. However, it is more cumbersome, laborious, and costly during use and carrying. Content of the Utility Model

[0005] The purpose of the embodiment of the utility model is to provide a variable voltage power conversion head, aiming to solve the problem in the prior art that due to world cultural differences, there are differences in power sockets and power conversion heads used in many countries. For example, the power sockets and voltages in China and the United States are different. When going to different places, it is necessary to prepare the locally adapted power conversion head in advance, and a device with a voltage conversion function is also needed to adjust the input voltage to the voltage adapted to the electrical appliance, so that the devices that need to connect to the power supply can use the power supply with different local voltages. However, it is more cumbersome, laborious, and costly during use and carrying.

[0006] The embodiment of the utility model is implemented as follows. A variable voltage power conversion head, the variable voltage power conversion head includes:

[0007] The housing forms a cavity structure inside. The housing is used to install a control circuit, multiple sets of plugs, and a voltage conversion knob. The housing is provided with multiple sets of jacks and multiple sets of first positioning holes. The jacks are used for electrically connecting with the power cord of the device, and the first positioning holes are used for positioning the plugs.

[0008] Multiple sets of plugs are used for electrically connecting with different types of power sockets. The multiple sets of plugs include a first plug and multiple sets of second plugs. The first plug is rotatably connected to the housing, and the second plugs are installed inside the housing cavity through sliding members. The sliding members are used to drive the second plugs to slide.

[0009] The voltage conversion knob is electrically connected to the control circuit. The voltage conversion knob is used to adjust the output voltage of the adapter.

[0010] Preferably, the housing includes a front shell and a bottom shell. The back of the front shell is used to install the control circuit. The bottom shell is a semi-closed shell respectively. The bottom shell is installed on the bottom surface of the front shell. Multiple second positioning holes and third positioning holes are provided on the outer side surface of the bottom shell. The second positioning holes are used for positioning the sliding members, and the third positioning holes are used for positioning the voltage conversion knob. A first positioning groove is provided on the bottom surface of the bottom shell, and the first positioning groove is used for positioning the first plug.

[0011] Preferably, the multiple sets of jacks are located on the upper end surface of the front shell. A spring pressing piece is provided on the jacks, and the spring pressing piece is used to prevent impurities from entering the inside of the voltage conversion adapter through the jacks.

[0012] Preferably, the first positioning holes are located on the bottom surface of the bottom shell. Multiple sets of first positioning holes are provided and are respectively used for positioning the second plugs. The multiple sets of first positioning holes are the same as the jacks respectively.

[0013] Preferably, the first plug is provided with a rotating member. The rotating member is used to connect the bottom shell and the first plug so as to install the first plug on the wall surface of the first positioning groove of the bottom shell. The length of the first plug is less than the length of the first positioning groove to rotate the first plug to change the included angle between the first plug and the bottom surface of the bottom shell.

[0014] Preferably, multiple sliding members are provided. Each sliding member is used to install a set of second plugs. The sliding member is provided with a moving part and a connecting part. The moving part is located in front of the connecting part. The moving part cooperates with the second positioning hole so that the sliding member is connected to the bottom shell. The connecting part is a square plate shape. First connection holes and second connection holes are provided on two opposite side surfaces of the connecting part. The first connection holes are used for electrically connecting with the control circuit, and the second connection holes are used for installing a limiting member. The limiting member is a rod-shaped with a hollow structure. The limiting member is installed in the second connection hole through a connecting spring. The limiting member is used to limit the moving stroke of the sliding member.

[0015] Preferably, the second plug is installed on the bottom surface of the slider connection part. The second plug is rod-shaped, and each group of second plugs is installed side by side on the bottom surface of the connection part.

[0016] Preferably, the voltage conversion knob is provided with a connection plate. The connection plate is provided with a plurality of first connection ends, and the plurality of first connection ends are respectively connected to the control circuit. The front surface of the connection plate is provided with an installation groove and a plurality of connection grooves. The installation groove is used for rotatably connecting with the voltage conversion knob; the back surface of the voltage conversion knob is provided with an installation rod and a connecting rod. The installation rod is embedded in the installation groove, and by rotating the voltage conversion knob, the ends of the connecting rod are respectively matched with different connection grooves to achieve voltage conversion.

[0017] Preferably, the control circuit is provided with a plurality of connection heads. Each connection head is electrically connected to at most one first connection end, and the plurality of connection heads are used for outputting different voltages.

[0018] A voltage conversion power adapter provided by an embodiment of the present invention. The present invention provides a housing with a cavity to facilitate the installation of the control circuit, multiple groups of plugs, and the voltage conversion button on the housing. A plurality of groups of jacks are provided on the housing to facilitate the voltage conversion power adapter to be adapted to and electrically connected to the power cord of the device. Multiple groups of plugs of different types are provided, and a slider is used to drive the multiple groups of second plugs to slide so that the multiple groups of plugs on the voltage conversion power adapter can be selected and electrically connected according to the types of power sockets to be connected as required. The voltage conversion knob provided is electrically connected to the control circuit inside the voltage conversion adapter, and the output voltage of the plugs on the voltage conversion power adapter can be adjusted by using the voltage conversion knob to adapt to the requirements of different power sockets or different device connection voltages, eliminating the need for users to simultaneously reserve multiple different types of adapters and solving the problems of being cumbersome, laborious, and costly during use and carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structure diagram of a voltage conversion power adapter provided by an embodiment of the present invention;

[0020] Figure 2 is a bottom structure diagram of a voltage conversion power adapter provided by an embodiment of the present invention;

[0021] Figure 3 is an internal structure diagram of a voltage conversion power adapter provided by an embodiment of the present invention;

[0022] Figure 4 is a structure diagram of the use state of the first plug in a voltage conversion power adapter provided by an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the principle of the voltage conversion knob in a voltage conversion power adapter provided by an embodiment of the present invention.

[0024] In the drawings: 1. Outer shell; 11. Front shell; 12. Bottom shell; 121. First positioning groove; 13. Jack; 14. First positioning hole; 2. Plug; 21. Sliding member; 211. Moving part; 212. Connecting part; 213. Limiting member; 22. First plug; 23. Second plug; 3. Voltage conversion knob; 31. Connecting plate; 311. Connecting groove; 32. First connection end; 4. Control circuit. Detailed implementation manners

[0025] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] The following describes the specific implementation of the present utility model in detail with reference to specific embodiments.

[0027] As Figures 1-5 shown, it is a structural diagram of a voltage conversion power adapter provided by an embodiment of the present utility model, including: an outer shell 1, a cavity structure is formed inside the outer shell 1, the outer shell 1 is used to install a control circuit 4, multiple groups of plugs 2 and a voltage conversion knob 3, the outer shell 1 is provided with multiple groups of jacks 13 and multiple groups of first positioning holes 14, the jacks 13 are used for electrically connecting with the device power cord, and the first positioning holes 14 are used for positioning the plugs 2;

[0028] Multiple groups of plugs 2, the multiple groups of plugs 2 are used for electrically connecting with different types of power sockets, the multiple groups of plugs 2 are provided with a first plug 22 and multiple groups of second plugs 23, the first plug 22 is rotatably connected to the outer shell 1, and the second plug 23 is installed inside the cavity of the outer shell 1 through a sliding member 21, and the sliding member 21 is used to drive the second plug 23 to slide;

[0029] A voltage conversion knob 3, the voltage conversion knob 3 is electrically connected to the control circuit 4, and the voltage conversion knob 3 is used to adjust the output voltage of the adapter.

[0030] In the embodiment of the present utility model, preferably, the voltage conversion power adapter can be applicable to household appliances, office equipment, portable electronic devices, etc. According to the multiple groups of jacks 13 provided on the voltage conversion power adapter, it can be electrically connected to the power cords of different devices and different types to enable a voltage conversion power adapter to be applicable to multiple different scenarios. In places where there are certain differences in power sockets in different regions, the voltage conversion power adapter mainly consists of a housing 1, multiple groups of plugs 2, and a voltage conversion knob 3. Among them, the cavity formed inside the housing 1 is used to install the control circuit 4, multiple groups of plugs 2, and the voltage conversion knob 3. Multiple groups of jacks 13 of different shapes are provided on the upper end face of the housing 1, and multiple groups of first positioning holes 14 for positioning multiple plugs 2 can be provided on the lower end face. And the sliding member 21 is used to drive the plug 2 to slide along the side surface of the housing 1 and the length direction of the plug 2 respectively and is positioned by the first positioning hole 14 so as to facilitate sliding out the plug 2 and connecting it to the corresponding power socket. The voltage conversion knob 3 is also installed on the side surface of the housing 1. The output voltage on the control circuit 4 of the voltage conversion power adapter is controlled by the voltage conversion knob 3 to be adapted to the voltage requirements of the power socket, so that when the user uses the voltage conversion power adapter, according to the power sockets in different regions and the requirements of the output voltage, different jacks 13 on the voltage conversion power adapter can be selected, the power cord of the device is electrically connected to it, and then the corresponding type of plug 2 is slid out of the first positioning hole 14 by the sliding member 21 so that it can be connected to the power socket, and the output voltage of the voltage conversion power adapter is adjusted by the voltage conversion knob 3 according to the voltage requirement, so that when the user goes to different places, only the voltage conversion power adapter needs to be carried to use the power in multiple places without the need to equip multiple different power adapters at the same time, solving the problem that the equipment that needs to connect to the power supply can have different power supply voltages in different places, but it is more cumbersome, laborious and costly in the process of use and carrying.

[0031] In an example of the present utility model, the present utility model provides a housing 1 with a cavity to facilitate the installation of the control circuit 4, multiple groups of plugs 2, and the voltage conversion button on the housing 1. Multiple groups of jacks 13 are provided on the housing 1 to facilitate the adaptation and electrical connection of the voltage conversion power adapter to the power cord of the device. Multiple groups of plugs 2 of different types are provided, and the sliding member 21 is used to drive multiple groups of second plugs 23 to slide so that multiple groups of plugs 2 on the voltage conversion power adapter can be selected and electrically connected according to the types of power sockets to be connected as required. The provided voltage conversion knob 3 is electrically connected to the control circuit 4 inside the voltage conversion adapter, and the output voltage of the plug 2 on the voltage conversion power adapter can be adjusted by the voltage conversion knob 3 to be adapted to the requirements of different power sockets or the connection voltages of different devices, eliminating the need for the user to reserve multiple different types of adapters at the same time, and solving the problem that it is more cumbersome, laborious and costly in the process of use and carrying.

[0032] Such as Figures 1-5As shown, as a preferred embodiment of the present utility model, the housing 1 includes a front shell 11 and a bottom shell 12. The back of the front shell 11 is used for installing the control circuit 4. The bottom shell 12 is a semi-closed housing respectively. The bottom shell 12 is installed on the bottom surface of the front shell 11. Multiple second positioning holes and third positioning holes are provided on the outer side surface of the bottom shell 12. The second positioning holes are used for positioning the sliding member 21, and the third positioning holes are used for positioning the voltage conversion knob 3. A first positioning groove 121 is provided on the bottom surface of the bottom shell 12, and the first positioning groove 121 is used for positioning the first plug 22.

[0033] In the embodiment of the present utility model, preferably, the housing 1 may be composed of a front shell 11 and a bottom shell 12 with a semi-closed structure having a certain height. The bottom shell 12 may be a rectangular housing. On the four side surfaces of the bottom shell 12, three second positioning holes for positioning the sliding member 21 and one third positioning hole for positioning the voltage conversion knob 3 may be provided. The top surface of the bottom shell 12 is connected to the front shell 11. A first positioning groove 121 with a certain length and in a strip shape is further provided on the bottom surface of the bottom shell 12 to facilitate positioning the first plug 22. The bottom shell 12 is mainly used for installing multiple groups of plugs 2, sliding members 21, control circuits 4, and voltage conversion knobs 3 and protecting the components installed inside the bottom shell 12.

[0034] As Figures 1-5 shown, as a preferred embodiment of the present utility model, the multiple groups of jacks 13 are located on the upper end surface of the front shell 11. A spring pressing piece is provided on the jack 13, and the spring pressing piece is used to prevent impurities from entering the inside of the voltage conversion adapter through the jack 13.

[0035] In the embodiment of the present utility model, preferably, the multiple groups of jacks 13 may have the same shape and be adapted to the multiple groups of plugs 2 respectively. The multiple groups of jacks 13 are all provided on the upper end surface of the front shell 11. A spring pressing piece corresponding to the hole type may be provided at the connection between the jack 13 and the inner wall surface of the front shell 11. When the plug 2 of the power cord of an external device is inserted into the jack 13, the spring pressing piece will be pressed down so that the plug 2 of the power cord is electrically connected to the internal control circuit 4. When the plug 2 of the power cord is pulled out of the jack 13, the spring pressing piece resets to protect the jack 13 and prevent external impurities from falling into the inside of the jack 13 and affecting the use of the voltage conversion adapter.

[0036] As Figures 1-5 shown, as a preferred embodiment of the present utility model, the first positioning holes 14 are located on the bottom surface of the bottom shell 12. Multiple groups of first positioning holes 14 are provided and are respectively used for positioning the second plugs 23. The multiple groups of first positioning holes 14 are the same as the jacks 13 respectively.

[0037] In the embodiment of the present utility model, preferably, a plurality of groups of first positioning holes 14 can be provided on the bottom surface of the bottom shell 12, and each group can be close to the side length of the bottom shell 12 to facilitate the positioning of the second plug 23. Moreover, according to the different shapes of each group of plugs 2, the shapes of the corresponding first positioning holes 14 in each group are also different, which are adapted to the second plug 23 to facilitate the complete positioning of the second plug 23.

[0038] As Figures 1-5 shown, as a preferred embodiment of the present utility model, the first plug 22 is provided with a rotating member, and the rotating member is used to connect the bottom shell 12 and the first plug 22 to facilitate the installation of the first plug 22 on the wall surface of the first positioning groove 121 of the bottom shell 12. The length of the first plug 22 is less than the length of the first positioning groove 121 to rotate the first plug 22 to change the included angle between the first plug 22 and the bottom surface of the bottom shell 12.

[0039] In the embodiment of the present utility model, preferably, the first plug 22 can be a plate-like structure with a certain length, and one end of the first plug 22 is rotatably connected to the wall surface of the first positioning groove 121 of the bottom shell 12 through a rotating member. When the user needs to use this plug 2, since the length of the first plug 22 is less than the groove length of the first positioning groove 121, the first plug 22 can be directly rotated to change the included angle between the first plug 22 and the bottom surface of the bottom shell 12 so that the first plug 22 is perpendicular to the bottom surface of the bottom shell 12 to facilitate the connection of the first plug 22 to a matching power socket.

[0040] As Figures 1-5 shown, as a preferred embodiment of the present utility model, a plurality of sliding members 21 are provided, and each sliding member 21 is used to install a group of second plugs 23. The sliding member 21 is provided with a moving part 211 and a connecting part 212. The moving part 211 is located in front of the connecting part 212. The moving part 211 cooperates with the second positioning hole to connect the sliding member 21 to the bottom shell 12. The connecting part 212 is a square plate-like shape. Two opposite side surfaces of the connecting part 212 are provided with a first connecting hole and a second connecting hole. The first connecting hole is used for electrical connection with the control circuit 4, and the second connecting hole is used for installing a limiting member 213. The limiting member 213 is a rod-shaped structure with a hollow interior. The limiting member 213 is installed in the second connecting hole through a connecting spring, and the limiting member 213 is used to limit the moving stroke of the sliding member 21.

[0041] In the embodiment of the present utility model, preferably, the number of sliding members 21 can be set to be the same as the number of groups of the second plugs 23. Each sliding member 21 is connected to at most one group of second plugs 23, so as to be used separately. That is, when the user needs a certain type of second plug 23, the corresponding type of second plug 23 can be used by sliding. The sliding member 21 is composed of a moving part 211 and a connecting part 212. The connecting part 212 can be a square block with a certain thickness. A set of moving parts 211 is arranged on the front surface of the connecting part 212. The first plug 22 is installed at the bottom of the connecting member. Limit members 213 connected by connecting springs can be respectively arranged on both sides of the connecting part 212. When the user controls the moving part 211, it can move along the length direction of the second positioning hole on the outer wall surface of the bottom case 12, so that the moving part 211 drives the connecting part 212 and the second plug 23 on the bottom surface of the connecting part 212 to slide, and the sliding stroke of the second plug 23 is limited by the limit members 213 on both sides. At the same time, when the limit member 213 can also position the sliding position of the second plug 23 so that it can be inserted into the power socket to prevent its rebound from affecting the use effect of the plug 2.

[0042] As Figures 1-5 shown, as a preferred embodiment of the present utility model, the second plug 23 is installed on the bottom surface of the connecting part 212 of the sliding member 21. The second plug 23 is rod-shaped, and each group of second plugs 23 is arranged side by side on the bottom surface of the connecting part 212.

[0043] In the embodiment of the present utility model, preferably, each group of second plugs 23 can be a rod-shaped structure with a certain length, and each group of second plugs 23 can be arranged side by side on the bottom surface of the connecting part 212 according to the spacing of the corresponding jacks 13. At the same time, the width of the connecting part 212 on the sliding member 21 can be set differently according to the spacing between the plugs 2 to facilitate the installation of different groups of second plugs 23. Each group of second plugs 23 can be electrically connected to the control circuit 4 through the connecting part 212, so that after the voltage regulating knob 3 adjusts the output voltage value, the voltage is adapted when the second plug 23 is connected to the power socket.

[0044] As Figures 1-5 shown, as a preferred embodiment of the present utility model, the voltage regulating knob 3 is provided with a connecting plate 31. The connecting plate 31 is provided with a plurality of first connection ends 32, and the plurality of first connection ends 32 are respectively connected to the control circuit 4. An installation groove and a plurality of connection grooves 311 are provided on the front surface of the connecting plate 31. The installation groove is used for rotatably connecting with the voltage regulating knob 3; an installation rod and a connecting rod are provided on the back surface of the voltage regulating knob 3. The installation rod is embedded in the installation groove, and by rotating the voltage regulating knob 3, the ends of the connecting rod are respectively matched with different connection grooves 311 to achieve voltage regulation.

[0045] In the embodiment of the present utility model, preferably, the voltage conversion knob 3 can be installed on the side of the bottom case 12 through a connecting plate 31. The connecting plate 31 can be a circular plate, and a plurality of first connection terminals 32 electrically connected to the control circuit 4 are arranged at the edge of the circle. An installation groove for installing the voltage conversion button is arranged at the center position of the circular plate of the connecting plate 31. The voltage conversion knob 3 is rotationally connected to the connecting plate 31 through a mounting rod. When the user rotates the voltage conversion knob 3, the connecting rod on the back of the voltage conversion knob 3 is matched with the corresponding connection groove 311 to electrically connect the first connection terminal 32 with different voltage conversion values to the control circuit 4.

[0046] As Figures 1-5 shown, as a preferred embodiment of the present utility model, the control circuit 4 is provided with a plurality of connectors, and each connector is electrically connected to at most one first connection terminal 32. The plurality of connectors are used to output different voltages.

[0047] In the embodiment of the present utility model, preferably, the control circuit 4 can be connected to a coil and a plurality of connectors are arranged on the coil. Each connector is electrically connected to at most one first connection terminal 32. When the voltage conversion knob 3 is rotated to form a path between different first connection terminals 32 and the connectors of the control circuit 4 to change its output voltage and transmit it to the plug 2, the principle of adjusting the voltage of the voltage conversion knob 3 and the control circuit 4 is similar to the principle of adjusting the gears of an electric fan.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A variable voltage power conversion adapter, characterized in that, The variable voltage power conversion head includes: A housing, within which a cavity structure is formed. The housing is used to install a control circuit, multiple sets of plugs, and a voltage conversion knob. The housing is provided with multiple sets of jacks and multiple sets of first positioning holes. The jacks are used for electrically connecting with the power cord of the device, and the first positioning holes are used for positioning the plugs. Multiple sets of plugs, which are used for electrically connecting with different types of power sockets. The multiple sets of plugs include a first plug and multiple sets of second plugs. The first plug is rotatably connected to the housing, and the second plugs are installed inside the cavity of the housing through sliding members, and the sliding members are used to drive the second plugs to slide. A voltage conversion knob, which is electrically connected to the control circuit, and the voltage conversion knob is used to adjust the output voltage of the conversion head.

2. The variable voltage power conversion adapter according to claim 1, characterized in that, The housing includes a front shell and a bottom shell. The back surface of the front shell is used to install the control circuit. The bottom shell is a semi-closed housing respectively. The bottom shell is installed on the bottom surface of the front shell. Multiple second positioning holes and third positioning holes are provided on the outer side surface of the bottom shell. The second positioning holes are used for positioning the sliding members, and the third positioning holes are used for positioning the voltage conversion knob. A first positioning groove is provided on the bottom surface of the bottom shell, and the first positioning groove is used for positioning the first plug.

3. The voltage conversion power adapter according to claim 2, wherein The multiple sets of jacks are located on the upper end surface of the front shell, and elastic pressing pieces are provided on the jacks. The elastic pressing pieces are used to prevent impurities from entering the interior of the variable voltage power conversion head through the jacks.

4. The variable voltage power conversion adapter according to claim 2, wherein The first positioning holes are located on the bottom surface of the bottom shell. Multiple sets of first positioning holes are provided and are respectively used for positioning the second plugs. The multiple sets of first positioning holes are the same as the jacks respectively.

5. The variable voltage power conversion adapter according to claim 2, characterized in that, The first plug is provided with a rotating member, and the rotating member is used to connect the bottom shell and the first plug so as to install the first plug on the wall surface of the first positioning groove of the bottom shell. The length of the first plug is less than the length of the first positioning groove to rotate the first plug to change the included angle between the first plug and the bottom surface of the bottom shell.

6. The variable voltage power conversion adapter according to claim 2, wherein Multiple sliding members are provided. Each sliding member is used to install a set of second plugs. The sliding member is provided with a moving part and a connecting part. The moving part is located in front of the connecting part. The moving part cooperates with the second positioning holes to connect the sliding member with the bottom shell. The connecting part is a square plate shape. First connection holes and second connection holes are provided on two opposite side surfaces of the connecting part. The first connection holes are used for electrically connecting with the control circuit, and the second connection holes are used for installing a limiting member. The limiting member is a rod-shaped with a hollow structure. The limiting member is installed in the second connection hole through a connecting spring, and the limiting member is used to limit the moving stroke of the sliding member.

7. The variable voltage power conversion adapter according to claim 6, wherein, The second plugs are installed on the bottom surface of the connecting part of the sliding member. The second plugs are rod-shaped, and each set of second plugs is installed side by side on the bottom surface of the connecting part.

8. The variable voltage power conversion adapter according to claim 2, wherein The voltage conversion knob is provided with a connecting plate. The connecting plate is provided with multiple first connection ends, and the multiple first connection ends are respectively connected to the control circuit. An installation groove and multiple connection grooves are provided on the front surface of the connecting plate. The installation groove is used for rotatably connecting with the voltage conversion knob; an installation rod and a connecting rod are provided on the back surface of the voltage conversion knob. The installation rod is embedded in the installation groove, and by rotating the voltage conversion knob, the ends of the connecting rod are respectively matched with different connection grooves to achieve voltage conversion.

9. The variable voltage power supply adapter according to claim 2, characterized in that The control circuit is provided with a plurality of connectors, each connector being electrically connected to at most one first connection end, and the plurality of connectors are used to output different voltages.

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