Power interface expansion device with rotatable plug

Abstract

A power interface expansion device with a rotatable plug comprises a plug 1000, an interface expansion module 2000 and a rotating module 3000; the plug is fixedly connected with the rotating module; t

Description

[0001] The present application relates to the technical field of power converters, in particular to a power interface expansion device with a rotatable plug. BACKGROUND

[0002] The electric socket box is usually used to provide one or more connections to the power supply, and the design is different all over the world. Depending on the use scene of the electric socket box, various wires can be inserted through it, which is convenient for connecting with other circuits. The electrical socket box can provide additional electrical connections to the fixed sockets on the wall, therefore it is especially suitable for providing a group of electrical sockets on the desktop, cubicle or work area.

[0003] At present, when using electronic products and their power supplies, users often suffer from the problem that the plug of an electric socket and the space near the socket are limited, so they can't use it normally. When this happens, users must move the items placed next to the socket or replace the socket or plug, so that they can only connect to the socket unit when there is enough space near the socket, which leads to inconvenience for users and reduces their purchase intention.

[0004] In the prior art, the rotation direction of the plug on the row plug is not adjustable, which is unfavorable to various use requirements in real life. UK patent application No. 972246 "power socket" provides a socket box suitable for modular distribution system and equipped with at least one socket, which is suitable for accommodating an electric plug, and the socket can rotate in the socket box. However, in the power socket, in order to ensure good electrical connection, the slider contacts are arranged in sliding electrical contact with the corresponding conductor rings, and the slider contact pieces are elastically biased to the socket insert and the contacts of the bus bar, so that the contacts are worn with the rotation of the plug, and the service life is prolonged.

[0005] Based on the above problems, a power interface expansion device with rotatable plug is needed to solve the above problems. The power interface expansion device has the advantages of rotatable plug, not being affected by the space problem near the socket, simple operation, convenient use, high safety factor and convenient maintenance. SUMMARY

[0006] The terms “invention,” “the invention,” “this invention” and “the present invention” used in this patent are intended to refer broadly to all of the subject matter of this patent and the patent claims below. Statements containing these terms should be understood not to limit the subject matter described herein or to limit the meaning or scope of the patent claims below. Embodiments of the invention covered by this patent are defined by the claims below, not this summary. This summary is a high-level overview of various embodiments of the invention and introduces some of the concepts that are further described in the Detailed Description section below. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used in isolation to determine the scope of the claimed subject matter. The subject matter should be understood by reference to appropriate portions of the entire specification of this patent, any or all drawings and each claim.

[0007] The present application provides a power interface expansion device with a rotatable plug, which includes a plug, an interface expansion module, and a rotating module;

[0008] wherein, the plug is fixedly connected with the rotating module; and

[0009] wherein the rotating module comprises at least one rotating element, wherein the rotating element defines a rotating plane, a rotating center and a rotating axis around a rotating path thereof, wherein the rotating axis is perpendicular to the rotating plane and passes through the rotating center; and

[0010] wherein, the interface expansion module is rotatably coupled to the rotating module, and has a locked state and a rotation state around the rotating axis; and

[0011] wherein, the interface expansion module comprises an engagement surface which is engaged with an external device, and the engagement surface is parallel to the rotating plane.

[0012] The present application further provides a method for expanding a power interface for daily work and life, comprising providing a power interface expansion device with a rotatable connector, the device comprising a power interface expansion device with a rotatable plug, including a plug, an interface expansion module, and a rotating module;

[0013] wherein, the plug is fixedly connected with the rotating module; and

[0014] wherein the rotating module comprises at least one rotating element, wherein the rotating element defines a rotating plane, a rotating center and a rotating axis around a rotating path thereof, wherein the rotating axis is perpendicular to the rotating plane and passes through the rotating center; and

[0015] wherein, the interface expansion module is rotatably coupled to the rotating module, and has a locked state and a rotation state around the rotating axis; and

[0016] wherein, the interface expansion module comprises an engagement surface which is engaged with an external device, and the engagement surface is parallel to the rotating plane;

[0017] the method comprises the following steps:

[0018] operating the interface expansion module into a rotating state,

[0019] rotating the interface expansion module to a required position, and

[0020] using the power interface expansion device for work and life.

[0021] When the space near the fixed socket on the wall is not enough, the power interface expansion device with a rotatable plug provided by the present application can be used normally by selecting an appropriate direction by rotating the interface expansion module, so that it is not necessary to worry about the problem of insufficient space near the fixed socket, and the power interface expansion device with rotatable plug has the advantages of simple structure, convenient use and the like. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to make the technical solutions of embodiments of the present application more clearly, drawings to be used in the embodiments will be briefly introduced below. Obviously, drawings used in the following description are merely some embodiments of the present application. Those skilled in the art also may conclude other drawings based on these drawings without paying creative labor.

[0023] FIG. 1 is an overall schematic diagram of a power interface device with a rotatable plug;

[0024] FIG. 2 is a schematic diagram of the overall explosion of power interface equipment with rotatable plug;

[0025] FIG. 3 is a two-dimensional schematic diagram of the rotating module;

[0026] FIG. 4 is a three-dimensional schematic diagram of the rotating module;

[0027] FIG. 5 is a schematic diagram of the explosion of the rotating module;

[0028] FIG. 6 is a three-dimensional schematic diagram of the interface expansion module;

[0029] FIG. 7 is an explosion schematic diagram of the interface expansion module;

[0030] FIG. 8 is a schematic diagram of a button panel;

[0031] FIG. 9 is a schematic view of the joint post;

[0032] FIG. 10 is a schematic view of the base;

[0033] FIG. 11 is a schematic view of the upper cover;

[0034] FIG. 12 is a schematic view of the lower cover;

[0035] FIG. 13 is a schematic diagram of the internal structure of the lower cover;

[0036] FIG. 14 is a schematic diagram of the connection between the rotating module and the interface expansion module;

[0037] FIG. 15 is a partial schematic view of FIG. 14 A;

[0038] FIG. 16 is a schematic diagram of the connection between the rotating module, the electrical connecting sheet and the support post;

[0039] FIG. 17 is a schematic diagram of an electrical connecting sheet.

[0040] In the figures: Plug 1000; Interface expansion module 2000; Engagement surface 2100; Upper cover 2200; Power expansion socket aperture 2210; Clamping block 2220; Lower cover 2300; Support post 2310; Electrical connecting sheet 2311; Stopper 2312; Safety protection device 2320; Fuse 2321; Through hole 2400; Electrical control device 2500; Circuit board 2510; Power-on switch 2520; Plug bush 25300; Adjusting knob 2600; Rotating module 3000; Rotating element 3100; Rotating axis X; Rotating plane Y; Rotating center Z; Button panel 3110; Locking button 3111; Spring accommodating cavity 3112; Bayonet 3113; Connecting post 3114; Joint post 3120; Spring placement cavity 31213121; Connecting hole 3122; Slot 3123; Base 3130; Limiting protrusion 3131; Mounting seat 3132; Rotating sheet 3133; Spring reset device 3140. DESCRIPTION OF EMBODIMENTS

[0041] In describing the preferred embodiments, specific termi-nology will be resorted to for the sake of clarity. It is to be understood that each specific term includes all technical equivalents which operate in a similar manner to accomplish a similar purpose.

[0042] While various aspects and features of certain embodiments have been summarized above, the following detailed description illustrates a few exemplary embodiments in further detail to enable one skilled in the art to practice such embodiments. Reference will now be made in detail to embodiments of the inventive concept, examples of which are illustrated in the accompanying drawings. The accompanying drawings are not necessarily drawn to scale. The described examples are provided for illustrative purposes and are not intended to limit the scope of the invention. It should be understood, however, that persons having ordinary skill in the art may practice the inventive concept without these specific details.

[0043] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first attachment could be termed a second attachment, and, similarly, a second attachment could be termed a first attachment, without departing from the scope of the inventive concept.

[0044] It will be understood that when an element or layer is referred to as being “on,” “coupled to,” or “connected to” another element or layer, it can be directly on, directly coupled to or directly connected to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly coupled to,” or “directly connected to” another element or layer, there are no intervening elements or layers present. Like numbers refer to like elements throughout. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0045] As used in the description of the inventive concept and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates other.

[0046] As a preferred embodiment of the present application, in order to solve the problems that the current electric socket cannot be used normally due to the limited space near the plug and the socket, and that the existing plug can be rotated, the service life of the socket is short, and the rotating structure is complex, the present application provides a power interface expansion device with a rotatable plug.

[0047] Referring to FIG. 1, a power interface expansion device with a rotatable plug (hereinafter referred to as a power interface expansion device) includes a plug 1000, an interface expansion module 2000 and a rotating module 3000; the plug 1000 is fixedly connected with the rotating module 3000; the rotating module 3000 includes at least one rotating element 3100, wherein the rotating element 3100 defines a rotating plane Y, a rotating center Z and a rotating axis X around its rotating path, wherein the rotating axis X is perpendicular to the rotating plane Y and passes through the rotating center Z; Wherein, the interface expansion module 2000 is rotatably coupled to the rotating module 3000, and has a locked state and a rotation state around the rotating axis X; the interface expansion module 2000 includes an engagement surface 2100 that is engaged with an external device, and the engagement surface 2100 is parallel to the rotating plane Y.

[0048] When there is insufficient space near the fixed socket on the wall in decoration, work or daily use, and the plug 1000 cannot be directly inserted, it is necessary to rotate the plug 1000 to adjust its direction, so as to successfully complete the connection. At this time, the power interface expansion device can play its role, and the interface expansion module 2000 can be operated in a rotating state, and the rotating interface expansion module 2000 rotates around the rotation center Z, so as to select a suitable direction of the plug 1000 to ensure the connection with the fixed socket on the wall.

[0049] Refer to FIG. 3 to FIG. 11, as shown in FIG. 3, that rotating module 3000 include at least one rotating element 3100, which includes a button panel 3110, a joint post 3120 and a base 3130, the button panel 3110, the joint post 3120 and the base 3130 are sequentially arranged from top to bottom, and the button panel 3110, the joint post 3120 and the base 3130 are all in the vertical direction of the rotating axis X.

[0050] Further, arranging the button panel 3110, the joint post 3120 and the base 3130 in the order from top to bottom can make the structure more concise, facilitate production and assembly, and reduce the cost. The button panel 3110 is inserted through the through hole 2400, which is convenient for users to operate and improves the convenience of use. In other embodiments, the rotating element 3100 is not limited to the button panel 3110, the joint post 3120 and the base 3130, and the joint post 3120 and the base 3130 can be combined as a component to provide the same or similar functions (not shown in the figure).

[0051] As shown in FIGS. 6 and 7, the interface expansion module 2000 includes an upper cover 2200, the plane of which coincides with the rotating plane Y, and a lower cover 2300, which is covered by the lower cover 2300 and forms a cavity inside, and a through hole 2400 for installing the rotating module 3000 is formed at one end of the interface expansion module 2000. The upper cover 2200 is provided with four power expansion socket apertures 2210, and an electric control device 2500 is arranged in the internal cavity. The electric control device 2500 includes four power-on switches 2520, which correspond to the positions of the four power expansion socket apertures 2210 one by one, and each power expansion socket aperture 2210 is controlled by a power-on switch 2520, so that users can selectively supply power to other devices as required. The four power expansion socket apertures 2210 can supply power to other electronic devices, thus greatly expanding the application range of power interface expansion devices. The circuit board 2510, the power-on switch 2520 and the rotating module 3000 are electrically connected to ensure the stable operation of the whole power interface expansion equipment.

[0052] In other embodiments, the number of power expansion socket apertures 2210 and power-on switches 2520 can be any other desired number, and other types of interface holes, such as usb interface and type-c interface, can also be provided on the upper cover 2200 (not shown in the figure).

[0053] As shown in FIG. 4 to FIG. 8, two bayonet 3113 are symmetrically arranged on the periphery of the button panel 3110, a locking button 3111 is arranged in the center of the button panel 3110, and a clamping block 2220 is arranged on the upper cover 2200; the position of the clamping block 2220 corresponds to the position of the bayonet 3113. When the rotating module 3000 is installed on the interface expansion module 2000, clamping block 2220 of the upper cover 2200 will be aligned and engaged with the bayonet 3113 on the button panel 3110. This engagement is achieved by matching the shape of the clamping block 2220 with the contour of the bayonet 3113. Once engaged, the interface expansion module 2000 is fixed in a fixed position and cannot rotate at will. When the bayonet 3113 is engaged with the clamping block 2220, the interface expansion module 2000 is in a locked state. When the direction of the plug 1000 needs to be adjusted, the design of the locking button 3111 allows the user to press the locking button 3111 through simple manual operation to release the engagement between the bayonet 3113 and the clamping block 2220 to unlock the separation. When the clamping block 2220 is separated from the bayonet 3113, the interface expansion module 2000 is in a rotating state, and the interface expansion module 2000 can be rotated to a suitable position at this time.

[0054] In other embodiments, the number of the bayonet 3113 and the clamping block 2220 can be three or four or any other desired number.

[0055] Referring to FIG. 6, the overall shape of the interface expansion module 2000 is generally a T-shape. In other embodiments, the interface expansion module 2000 can also be square, bar, circle or any other desired shape. The shape of the interface expansion module 2000 can be selected by the user according to different use environments and requirements.

[0056] As shown in FIGS. 4 to 9, the lower end of the button panel 3110 is provided with three connecting posts 3114, which not only play a connecting role, but also enhance the structural stability of the button panel 3110. A spring accommodating cavity 3112 is formed inside the locking button 3111, and a downward concave spring placement cavity 3121 is arranged on the upper end plane of the joint post 3120. The spring placement cavity 3121 corresponds to the position of the spring accommodating cavity 3112, and at the same time, three connecting holes 3122 corresponding to the connecting posts 3114 are provided on the upper end plane of the joint post 3120. Each connecting hole is a through hole 2400 and has a downward extending protrusion, which can ensure that the connecting post 3114 can be firmly fixed in the joint post 3120 when inserted into the through hole 2400, and is not easy to fall off.

[0057] Further, a spring reset device 3140 is arranged between the button panel 3110 and the joint post 3120. One end of the spring reset device 3140 is arranged in the spring placement cavity 3121, and the other end is fixed in the spring accommodating cavity 3112. When the locking button 3111 is pressed, the button panel 3110 will be displaced downward, so that the spring reset device 3140 will be compressed. When the button panel 3110 is released, the spring reset device 3140 will release the potential energy and push the button panel 3110 back to its original position.

[0058] Further, this design not only makes the connection between the button panel 3110 and the joint post 3120 stable, but also has good operation feedback. When the user presses the locking button 3111, the button panel 3110 will move downward, the connecting post 3114 will slide in the connecting hole 3122, and the spring reset device 3140 will be compressed, and the interface expansion module 2000 will change from the locked state to the rotated state, so that the user can rotate the interface expansion module 2000 to select the appropriate direction to insert the plug 1000 into the fixed socket on the wall and start using it.

[0059] As shown in FIG. 10, the outer periphery of the base 3130 is provided with a limiting protrusion 3131, which is continuously formed along the outer periphery of the base 3130 to form a closed contour, thus ensuring that the base 3130 can be stably attached to a predetermined position during installation. The base 3130 is provided with a mounting seat 3132, and the joint post 3120 is fixedly connected with the mounting seat 3132 through bolts.

[0060] In other embodiments, the joint post 3120 and the mounting seat 3132 can be fixed by other connection methods, such as riveting, bonding, locking connection and pin connection (not shown in the figure).

[0061] As shown in FIG. 4, FIG. 9 to FIG. 15, there are three slots 3123 on the outside of the joint post 3120, and there are three rotating sheets 3133 on the mounting seat 3132. The mounting positions of the three rotating sheets 3133 correspond to the positions of the three slots 3123. The lower cover 2300 is provided with six support posts 2310, which are arranged at the periphery of the through hole 2400 and around the periphery of the mounting seat 3132. The support posts 2310 are divided into three groups, and two support posts 2310 in each group correspond to each other in pairs. Each group of support posts 2310 is provided with an electrical connecting sheet 2311, which is semicircular and has a diameter slightly larger than the outer diameter of the joint post 3120. As shown in FIG. 4, FIG. 15 and FIG. 16, the height of the slot 3123, the installation position of the rotating sheet 3133 and the height of the electrical connecting sheet 2311 are in one-to-one correspondence, the plug 1000, the rotating sheet 3133 and the electrical connecting sheet 2311 are electrically connected, and the rotating sheet 3133 and the electrical connecting sheet 2311 are rotatably connected, therefore when the locking button 3111 is pressed to rotate the interface expansion module 2000, the rotating sheet 3133 and the electrical connecting sheet 2311 are always electrically connected.

[0062] Further, the electrical connection between the plug 1000, the rotating sheet 3133 and the electrical connecting sheet 2311 is realized through the corresponding relationship among the slots 3123, the rotating sheet 3133 and the electrical connecting sheet 2311. This design allows the electrical connection between the rotating sheet 3133 and the electrical connecting sheet 2311 to be maintained when the interface expansion module 2000 is rotated, thus ensuring the power supply of the whole power interface expansion device during the rotation.

[0063] Further, as shown in FIG. 17, two ends of the electrical connecting sheet 2311 are respectively provided with a stopper 2312, and the stopper 2312 defines the rotatable angle of the rotating sheet 3133 on the electrical connecting sheet 2311.

[0064] In this embodiment, the rotation angle of the interface expansion module 2000 is 180 degrees, while in other embodiments, the rotation angle of the interface expansion module 2000 can be increased by changing the radian of the electrical connecting sheet 2311, for example, changing the semicircular structure of the electrical connecting sheet 2311 into a 2 / 3 arc (not shown in the figure).

[0065] Further, when a electrical connecting sheet 2311 or rotating sheet 3133 has a problem, because they are arranged in groups, the problematic part can be replaced or repaired independently without replacing the whole device, which greatly reduces the maintenance cost and time. The support posts 2310 are arranged around the periphery of the mounting seat 3132, and each group of support posts 2310 is provided with an electrical connecting sheet 2311. This layout not only optimizes the space utilization, but also ensures the stability and reliability of the electrical connecting sheet 2311.

[0066] As shown in FIGS. 7 and 13, an electrical control device 2500 is arranged in the interface expansion module 2000. The electrical control device 2500 includes a circuit board 2510, a power-on switch 2520 and a plug bush 2530. The power-on switch 2520, the plug bush 2530 and the circuit board 2510 are all electrically connected, and the position of the plug bush 2530 corresponds to the position of the power expansion socket aperture 2210 one by one, thus providing an expanded power socket.

[0067] Further, the lower cover 2300 is also provided with a safety protection device 2320. As shown in FIGS. 2 and 13, the safety protection device 2320 is provided with a fuse 2321, which can prevent the heat from being too high caused by the current exceeding the rated current of the equipment or circuit, and avoid the damage of the equipment or the occurrence of fire. When a short circuit occurs in the circuit, the current will quickly increase to a very high level, resulting in serious damage to the equipment or even fire. The fuse 2321 can detect the short circuit and cut off the circuit to prevent the further spread of short-circuit current, and the setting of the fuse 2321 also reduces the maintenance and replacement cost of the power interface expansion equipment. When the circuit fails, the fuse 2321 is one of the easiest parts to replace and repair, and only a fuse 2321 is needed.

[0068] In other embodiments, in addition to the above protection measures, the power interface expansion equipment can also be provided with safety measures such as leakage protection, lightning protection, grounding protection and unilateral self-locking (not shown in the figure).

[0069] Further, as shown in FIG. 2, when the user successfully plugs the power interface expansion device into the fixed socket, the back of the power interface expansion device may not be closely attached to the wall. In this case, the device may appear unstable and easily shake or shift during use, which not only affects the normal use of the equipment, but also may cause damage or safety risks to the device. In order to solve this problem, the power interface expansion device is provided with two adjusting knobs 2600 at both ends of the back of the lower cover 2300. When the user finds that the device is not stably attached to the wall, he can turn the adjusting knobs 2600 at both sides to make it contact with the wall to provide additional support points for the power interface expansion device, which makes the whole device more stable during use.

[0070] In other embodiments, the number of adjusting knobs 2600 can also be any desired number.

[0071] As another preferred embodiment of the present application, the present application also provides a method of using an expanded power interface for daily life work, including providing a power interface extension device with a rotatable connector, and the method includes:

[0072] first, when the user cannot use the power interface expansion device normally due to the unreasonable space near the fixed socket, the locking button 3111 is pressed, and the interface expansion module 2000 will enter the rotating state;

[0073] secondly, the interface expansion module 2000 is rotated to a proper position until the plug 1000 can be normally inserted into the fixed socket; and

[0074] finally, the user can use the power interface expansion device for normal work and life.

[0075] The terms “comprising,” “including,” “having,” and the like are synonymous and are used inclusively, in an open-ended fashion, and do not exclude additional elements, features, acts, operations, and so forth. Also, the term “or” is used in its inclusive sense (and not in its exclusive sense) so that when used, for example, to connect a list of elements, the term “or” means one, some, or all of the elements in the list. The use of “adapted to” or “configured to” herein is meant as open and inclusive language that does not foreclose devices adapted to or configured to perform additional tasks or steps. Additionally, the use of “based on” is meant to be open and inclusive, in that a process, step, calculation, or other action “based on” one or more recited conditions or values may, in practice, be based on additional conditions or values beyond those recited. Similarly, the use of “based at least in part on” is meant to be open and inclusive, in that a process, step, calculation, or other action “based at least in part on” one or more recited conditions or values may, in practice, be based on additional conditions or values beyond those recited. Headings, lists, and numbering included herein are for ease of explanation only and are not meant to be limiting.

[0076] The various features and processes described above may be used independently of one another, or may be combined in various ways. All possible combinations and sub-combinations are intended to fall within the scope of the present disclosure. In addition, certain method or process blocks may be omitted in some implementations. The methods and processes described herein are also not limited to any particular sequence, and the blocks or states relating thereto can be performed in other sequences that are appropriate. For example, described blocks or states may be performed in an order other than that specifically disclosed, or multiple blocks or states may be combined in a single block or state. The example blocks or states may be performed in serial, in parallel, or in some other manner. Blocks or states may be added to or removed from the disclosed examples. Similarly, the example systems and components described herein may be configured differently than described. For example, elements may be added to, removed from, or rearranged compared to the disclosed examples.

[0077] The invention has now been described in detail for the purposes of clarity and understanding. However, those skilled in the art will appreciate that certain changes and modifications may be practiced within the scope of the appended claims.

[0078] Conditional language used herein, such as, among others, “can,” “could,” “might,” “may,” “e.g.,” and the like, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain examples include, while other examples do not include, certain features, elements, and / or steps. Thus, such conditional language is not generally intended to imply that features, elements and / or steps are in any way required for one or more examples or that one or more examples necessarily include logic for deciding, with or without author input or prompting, whether these features, elements and / or steps are included or are to be performed in any particular example.

Claims

What is claimed is:

1. A power interface expansion device with a rotatable plug, comprising a plug, an interface expansion module, and a rotating module; andsaid plug is fixedly connected with said rotating module; andsaid rotating module comprises at least one rotating element, said rotating element defines a rotating plane, a rotating center and a rotating axis around a rotating path thereof, said rotating axis is perpendicular to said rotating plane and passes through said rotating center; andsaid interface expansion module is rotatably coupled to said rotating module, and has a locked state and a rotation state around said rotating axis; andsaid interface expansion module comprises an engagement surface which is engaged with an external device, and said engagement surface is parallel to said rotating plane.

2. The power interface expansion device according to claim 1, wherein said rotating element comprises a button panel, a joint post and a base, wherein said button panel, said joint post and said base are sequentially arranged from top to bottom, and said button panel, said joint post and said base are all in a vertical direction of said rotating axis.

3. The power interface expansion device according to claim 2, wherein, said interface expansion module comprises an upper cover, an upper end plane of said upper cover coincides with said rotating plane, and said upper cover is provided with more than one power expansion socket aperture; and a low cover covered by said upper cover, wherein a cavity is formed in said low cover; and a through hole is formed at one end of said interface expansion module; and said rotating module is arranged in said through hole.

4. The power interface expansion device according to claim 3, wherein a locking button is arranged at a center of said upper end of said button panel, at least one bayonetis arranged at a peripheral edge of said button panel, and a clamping block corresponding to said bayonet is arranged on said upper cover.

5. The power interface expansion device according to claim 4, wherein, when said bayonet is engaged with said clamping block, said interface expansion module is in a locked state; and when said bayonet is separated from said clamping block, said interface expansion module is in a rotating state.

6. The power interface expansion device according to claim 5, wherein said locking button is internally provided with a spring accommodating cavity, and a lower end of said button panel is provided with more than one connecting post, and an upper end plane of said connecting post is provided with a spring placement cavity and a connecting hole.

7. The power interface expansion device according to claim 6, wherein, said rotating element comprises a spring reset device, one end of which is fixed in said spring placement cavity and the other end is fixed in said spring accommodating cavity; and said connecting hole is arranged opposite to said connecting post, and said connecting post can pass through said connecting hole.

8. The power interface expansion device according to claim 7, wherein, said spring reset device has a normal state and a compressed state, and when said bayonet is engaged with said clamping block, said spring reset device is in a normal state; and when said bayonet is separated from said clamping block, said spring reset device is in a compressed state.

9. The power interface expansion device according to claim 8, wherein, said base is provided with a limiting protrusion which is continuously molded along an outer peripheral edge of said base, and a mounting seat is arranged in said limiting protrusion, and said connecting post can be fixed on said mounting seat by bolts.

10. The power interface expansion device according to claim 9, wherein said connecting post is provided with three slots, and said mounting seat is provided with three rotating sheets electrically connected with said plug, and the positions of said rotating sheets correspond to the positions of said slot.

11. The power interface expansion device according to claim 10, wherein, said lowcover comprises at least one support post, which is symmetrically arranged around a periphery of said rotating module, and said support post is provided with an electrical connecting sheet which is semicircular, and said interface expansion module and said rotating module are in contact with said rotating module through said electrical connecting sheet, thereby forming an electrical connection.

12. The power interface expansion device according to claim 11, wherein said interface expansion module is provided with an electrical control device, which comprises a circuit board and a power-on switch electrically connected with said circuit board, and said circuit board, said electrical connecting sheet and said rotating module are electrically connected.

13. The power interface expansion device according to claim 12, wherein said interface expansion module further comprises a safety protection device and at least one adjusting screw button, wherein said safety protection device is a fuse, said fuse is arranged between said electrical connecting sheet and said circuit board, and said adjusting screw buttons are arranged at both ends of a bottom of said interface expansion module.

14. A method for expanding a power interface for daily work and life, comprising providing a power interface expansion device with a rotatable connector, said device comprising a power interface expansion device with a rotatable plug, including a plug, an interface expansion module, and a rotating module; andsaid plug is fixedly connected with said rotating module; andsaid rotating module comprises at least one rotating element, said rotating element defines a rotating plane, a rotating center and a rotating axis around a rotating path thereof, said rotating axis is perpendicular to said rotating plane and passes through said rotating center; andsaid interface expansion module is rotatably coupled to said rotating module, and has a locked state and a rotation state around said rotating axis; andsaid interface expansion module comprises an engagement surface which is engaged with an external device, and said engagement surface is parallel to said rotating plane; andthe method comprises the following steps:operating said interface expansion module into a rotating state, rotating said interface expansion module to a required position, and using the power interface expansion device for work and life.

15. The method according to claim 14, wherein said interface expansion module further comprises an adjusting knob, and after said power interface expansion device is fixed, said adjusting knob can be rotated to make said power interface expansion device adhere to wall and provide support.

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