CN113078499B

CN113078499B - Modular USB charging socket

Info

Publication number: CN113078499B
Application number: CN202110388052.0A
Authority: CN
Inventors: 胡于兴; 张小莉
Original assignee: Shenzhen Netlink Communication Equipment Co ltd
Current assignee: Shenzhen Netlink Communication Equipment Co ltd
Priority date: 2021-04-10
Filing date: 2021-04-10
Publication date: 2022-10-21
Anticipated expiration: 2041-04-10
Also published as: CN113078499A

Abstract

According to the invention, the USB charging socket is divided into three structures, namely the panel socket, the first shell and the second shell, wherein the first shell is made of a high-strength material, important stress elements are intensively arranged as the first shell to form a frame structure, the frame structure not only improves the heat dissipation performance of the USB socket, but also intensively arranges the stress elements as an integral body by using the high-strength material, and the integral strength and the use durability of the USB panel socket are improved due to the first shell formed by the high-strength frame.

Description

Modular USB charging socket

Technical Field

The invention belongs to the field of charging output ports of electronic equipment such as a mobile phone and the like, particularly relates to a modular USB charging socket, and belongs to USB charging output equipment.

Background

The RJ45 panel consists of a plug and a socket, and because the execution standard of international general use is adopted, various plugs of different types can be inserted into the socket panel, thereby providing great convenience for the production and installation of a wiring system. For example, telephone line plug and net twine plug belong to different plug types, but telephone line plug and net twine plug among the present reality all adopt the buckle and the delivery outlet setting mode of equidimension for telephone line socket and net twine socket are the same panel, and in the actual wiring process, the panel only need select for use the same type, adopts different plug types according to actual need again. Because of the adoption of the uniform standard, the selection of the wiring element is facilitated, and the construction of the wiring element is also facilitated. RJ45 panels are also widely used in practice.

Because the USB data line fills the wide use of line, USB supply socket also is by more and more extensive use in recent years, has the USB supply socket that satisfies the RJ45 standard of design among the prior art for USB supply socket can be like telephone line plug or net twine plug extensive with RJ45 panel phase-match, with USB charging head can be fast simple in the actual use, need not design special USB output device or USB charging delivery outlet fixed panel that charges alone again.

For example, the inventions CN206180319 and CN205657274 in the prior art also adopt the same concept, and invent a USB charging plug suitable for an RJ45 panel. However, in practical use, the end of the USB charging outlet is directly connected to a conventional 220V power supply, the conversion circuit board is much larger than the network cable or telephone cable structure, and the fixing strength requirement of the conversion circuit board on the end connecting line is also larger than that of other types of RJ45 plugs, so that the fixing strength and connection strength requirements on the USB charging output plug suitable for the RJ45 panel are also larger than those of the conventional RJ45 plugs. The existing USB charging plug suitable for the RJ45 is clamped with the panel, and the strength and the durability are low.

Disclosure of Invention

The invention provides a modular USB charging socket, which improves the clamping stability of the charging socket.

The USB modular socket in the prior art has a uniform size with the J45 panel, and enters the universal panel through a snap device port provided on the USB charging socket.

The circuit board is arranged in the USB charging insertion core, and the external 220V voltage is output from the plug part after being reduced. Therefore, the USB charging plug needs to be provided with a housing that accommodates the circuit board. A circuit board fixing groove for clamping the circuit board is arranged in the shell.

USB socket that charges can realize that the module setting is fixed, and the main reliance is gone up the arch, and the block structure that the protruding card goes into in the panel down realizes fixing, charges the lock pin at the RJ45 panel transportation of pegging graft and work progress at actual USB, goes up the arch, and lower arch is found the destruction easily, in case go up the arch, lower protruding loss, the lock pin will be difficult to fix. In order to prevent the USB charging socket from being too high in temperature, the shell is provided with heat dissipation holes, the heat dissipation performance of the USB charging socket is affected by too small heat dissipation holes, and the overall strength of the shell is also affected by too large heat dissipation holes.

The circuit board that USB charges is also far greater than the circuit board that sets up in net twine and the telephone line quartzy head, and the circuit board carries out the block through the circuit board fixed slot in the casing and fixes. Due to the fact that the size of the USB charging circuit board is large, looseness can easily occur in the fixing process inside the shell.

Therefore, the most important stressed parts in the USB charging socket are an upper bulge and a lower bulge and a circuit board fixing groove.

For the fixed intensity on the panel that improves USB and charge the lock pin to and the durability of self, and improve the USB and charge the lock intensity of lock pin to the charging circuit board. The invention improves the charging insertion core on the basis of the prior art.

In the invention, the plane where the air holes are located is completely removed, only 4 edges of the first shell are reserved, the 4 edges are made of metal materials or other high-strength materials, the two edges are symmetrically arranged in pairs and have L-shaped cross sections, and the top surfaces of the two opposite edges are spliced through a connecting plate I to form a 20866-shaped support frame.

A shell buckling hole is formed in the inner side of each edge in the first shell, and a circuit board fixing groove is formed in the inner side of each edge.

The second casing is provided with and detains hole assorted casing fastener with the casing, detains the concatenation that first casing and second casing were realized to the block of hole assorted casing fastener through the casing, is provided with the circuit board in the cavity that first casing and second casing are constituteed.

In the front surface of the first shell, the first connecting plate and the second connecting plate form a rectangular opening, the reinforcing block at the edge of the lower part of the plug part is provided with a clamping block, and the clamping block is clamped into the inner sides of the second connecting plates through a clamping block groove to fix the plug part and the first shell.

The upper bulge is fixed on the upper connecting plate II, and the lower bulge is fixed on the lower surface of the plug part.

As can be seen from the attached drawings, the section of the edge is L-shaped.

The first shell and the upper fixed bulge are made of high-strength materials, and the second shell and the panel socket are made of common low-strength plastics.

The second casing is the plate body structure, and plate body surface four sides are provided with the limit groove, and the bottom surface on stupefied limit is provided with the tooth limit with limit groove block.

The L-shaped arrangement of the edge is adopted, so that the supporting performance of the edge along the length direction is improved.

According to the invention, the USB charging socket is divided into three structures, namely a panel socket, a first shell and a second shell, wherein the first shell is made of high-strength materials, important stressed elements are intensively arranged as the first shell to form a frame structure, the frame structure not only improves the heat dissipation performance of the USB socket, but also intensively arranges the stressed elements as an integral body by using the high-strength materials, and the integral strength and the use durability of the USB panel socket are improved due to the first shell formed by the high-strength frame.

The invention adopts the first shell in the form of a frame to be clamped with the second shell in the form of a plate, wherein the frame of the first shell is an important stressed part of the whole shell structure, and the part with smaller stress is completely hollowed out, so that the material is saved, the heat dissipation performance is improved, the stressed part is left without specially arranging a heat dissipation hole, and is changed into a material with higher strength, the strength of the whole shell structure is improved, and the clamping strength of the USB charging core and the panel and the fixing strength of the charging wire and the internal circuit board are improved.

Drawings

Fig. 1a and 1b are schematic diagrams of a ferrule engaged with an RJ45 panel in the prior art;

fig. 2a is a front view of a prior art RJ45 panel;

fig. 2b is a side view of a prior art RJ45 panel;

fig. 2c is a rear view of a prior art RJ45 panel;

FIG. 3a is a top view of a prior art ferrule;

figure 3b is a side view of a prior art ferrule;

FIG. 4a is a schematic illustration of a first housing of the prior art;

FIG. 4b is a schematic view of a second housing of the prior art;

FIG. 5a is a schematic view of a first housing of the present invention;

FIG. 5b is a front view of the first housing of the present invention;

FIG. 6a is a schematic diagram of a USB charging socket according to a first embodiment of the present invention;

FIG. 6b is a schematic view of the first housing in the first embodiment of this embodiment;

FIG. 6c is a schematic view of the panel socket of the first embodiment of this embodiment;

FIG. 6d is a plan view of the first housing in the first embodiment of this embodiment;

FIG. 7a is a schematic view of a support frame in the first embodiment of the present invention;

FIG. 7b is a schematic view of the second housing in the first embodiment of this embodiment;

FIG. 7c is a schematic view of portion A of FIG. 6 a;

FIG. 8a is a schematic view of the back of the first housing in the second embodiment of this embodiment;

FIG. 8b is a schematic view of the first housing in the second embodiment of this embodiment;

FIG. 8c is a schematic view of a second housing in the second embodiment of this embodiment;

the reference numbers are as follows:

the circuit board fixing structure comprises a shell 1, a heat dissipation hole 2, an upper bulge 3, a lower bulge 4, a reinforcing block 5, a clamping buckle 6, a circuit board fixing groove 7, a shell buckling hole 8, a shell fastener 9, a fillet 10, a plug portion 11, a panel socket 12, a first shell 13, a second shell 14, a first connecting plate 15, a second connecting plate 16, a supporting frame 17, a clamping block groove 18, a side groove 19, a tooth edge 20, a filling block 21, a first plane 22, a second plane 23 and a 220V electric wire interface 24.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

The invention provides a modular USB charging socket.

Fig. 1a and 1b are schematic diagrams of a USB modular socket in the prior art. As can be seen from fig. 1a and 1b, in order to realize the modular engagement with the RJ45 panel, the housing housings 1 of the two charging sockets have the same upper protrusion 3, lower protrusion 4, reinforcing block 5, and plug portion 11, although there is a difference in structure. Fig. 2a to 2c are schematic diagrams of a conventional RJ45 panel, where the RJ45 panel is a common universal panel, and has an international unified standard, and various ferrules such as a network cable socket and a power socket can be engaged with the common universal panel, so that the common panel has very good international universality.

In actual use, the network cable jack, the power jack, and the like are engaged with the rear portion of the panel, the external ports thereof are exposed to the outside through the panel jack 12, and the network cable, the telephone line, and the like are inserted into the panel jack 12 to communicate with the network or the telephone line.

Since the RJ45 panels are of uniform size, the upper bosses 3, lower bosses 4, and plug portions 11 in fig. 1a and 1b, all of which have the same size, have an outer profile slightly smaller than the panel sockets 12. The module socket is clamped into the back face of the panel through the upper bulge 3 and the lower bulge 4, and the panel backpack is provided with corresponding clamping buckles 6 corresponding to the upper bulge and the lower bulge.

Wherein, the two groups of the snap fasteners 6 are symmetrically arranged at the left and right or up and down, one group is snapped with the upper bulges, the other group is snapped with the lower bulges, and the socket is fixed on the panel by the snapping of the two groups of the snap fasteners 6 to the upper bulges and the lower bulges.

Referring to fig. 3b, it can be seen that the distance from the front end of the snap 6 to the panel surface is h1, while the distance from the upper protrusion 3 and the inner side of the lower protrusion 4 to the plug portion 11 is also h1.

The circuit board is arranged in the USB charging inserting core, and the external 220V voltage is output from the plug part 11 after being reduced by the circuit board. Therefore, the USB charging plug needs to be provided with a housing that accommodates the circuit board. A circuit board fixing groove 7 for clamping the circuit board is arranged in the shell.

Fig. 4a and 4b are the splicing mode of the existing shell, which is spliced by a first shell provided with a C-shaped shell and a second shell provided with an L-shaped shell, wherein the second shell is provided with a plurality of shell fasteners 9, the first shell is provided with shell fastening holes 8 corresponding to the shell fasteners 9, and the splicing strength of the first shell and the second shell is improved by the clamping of the shell fastening holes 8 left by the shell fasteners 9.

And USB socket that charges can realize that the module setting is fixed, and the main dependence goes up arch 3, and the block in the panel of protruding 4 down realizes fixing, charges the lock pin at the RJ45 panel transportation of pegging graft and work progress at actual USB, goes up arch 3, and protruding 4 down discovers the destruction easily, in case go up arch 3, protruding 4 losses down, and the socket will be difficult to fix on the panel. Meanwhile, in order to prevent the USB charging socket from being too high in temperature, the shell is provided with the heat dissipation holes 2, the heat dissipation performance of the USB charging socket is affected by the undersize of the heat dissipation holes 2, and the overall strength of the shell is also affected by the oversize of the heat dissipation holes 2.

The circuit board that USB charges is also far greater than the circuit board that sets up in net twine and the quartzy head of telephone line, and the circuit board carries out the block through circuit board fixed slot 7 in the casing and fixes. Because the circuit board size that USB charges is great, also appear becoming flexible easily in the inside fixed in-process of casing.

Therefore, the most important stressed parts in the USB charging socket are the upper protrusion 3, the lower protrusion 4 and the circuit board fixing groove 7.

In order to improve the fixing strength of the USB charging insertion core on the panel, the durability of the USB charging insertion core and the clamping strength of the USB charging insertion core on the charging circuit board are improved. The invention improves the charging insertion core on the basis of the prior art.

On the basis of the prior art, the USB charging socket is improved.

In the invention, the plane of the air hole 2 is completely removed, only 4 edges of 13 of the c-shaped first shell are reserved, the 4 edges are made of metal materials or other high-strength materials, the 4 edges are symmetrically arranged in pairs, and the top surfaces of the two opposite edges are spliced by a connecting plate I15 to form a 20866-shaped support frame 17.

The inner side of each edge 10 in the first shell 13 is provided with a shell buckling hole 8, and the inner side is also provided with a circuit board fixing groove 7.

The second shell 14 is provided with a shell fastener 9 matched with the shell fastening hole 8, the splicing of the first shell 13 and the second shell 14 is realized through the clamping of the shell fastener 9 matched with the shell fastening hole 8, and a circuit board is arranged in a cavity formed by the first shell 13 and the second shell 14.

In the front surface of the first shell 13, the two first connecting plates 15 and the two second connecting plates 15 form a rectangular opening, and the reinforcing block 5 at the lower edge of the plug part 11 is provided with a block groove 18, and the block groove 18 is clamped into the inner sides of the two second connecting plates 15, so that the plug part 11 and the first shell 13 are fixed.

The upper projection 3 is fixed on the upper connecting plate 16, and the lower projection is fixed on the lower surface of the plug part 11.

As can be seen from the attached drawings, the section of the fillet 10 is L-shaped.

The first housing 13 and the upper fixed upper boss 3 are composed of a high strength material, and the second housing 14 and the panel socket 12 are composed of a common low strength plastic.

Example one

A modularized USB charging socket comprises a plug part 11 arranged at the front end and a shell-shaped structure arranged at the rear end of the plug part 11, wherein a USB charging output port is arranged at the front end of the plug part 11, and a USB socket is inserted into the charging output port to realize current transmission.

The shell-like structure at the rear end of the plug portion 11 is formed into a box-like structure by inserting the first housing 13 and the second housing 15 into each other.

The first shell is composed of two supporting frames 17, the two supporting frames 17 are clamped on two sides of the bottom of the plug portion 11, each supporting frame 17 comprises two L-shaped edges 10 which are arranged in parallel, and a first connecting plate 15 arranged at the end portion of each edge 10. As shown in fig. 6b and fig. 7a, the supporting frame 17 forms a structure with a cross section shaped like a' 20866by two symmetrically arranged L-shaped edges 10 and a first connecting plate 15.

The first connecting plates 15 of the two oppositely arranged supporting frames 17 are fixed on two sides of the bottom of the plug part 11, and the second connecting plates 16 connect the two oppositely arranged supporting frames 17 to form a first shell structure.

The first shell structure further comprises an upper bulge 3, and the bottom of the upper bulge 3 is fixed with a second connecting plate 16. The first housing is made of a high-strength material. A rectangular hole is formed by the two connecting plates I15 and II 16, and the plug part 11 is clamped in the rectangular hole through the reinforcing block 5.

The upper protrusion 3 is fixed on the second connecting plate 16, and the lower protrusion is fixed on the lower surface of the plug part 11.

Reinforcing blocks 5 are provided with four, plug portion 11 is the cuboid structure, be provided with relative right flank and left surface, and adjacent and relative last side and the downside that sets up equally with the right surface left surface, the right surface of plug portion 11 is provided with two reinforcing blocks 5, the reinforcing block 5 of right surface sets up in the crossing corner of plug portion 11 right side panel and connecting plate 15, the left surface of plug portion 11 is provided with two reinforcing blocks 5, the reinforcing block 5 of left surface sets up in the crossing corner of plug portion 11 left side panel and connecting plate 15.

Referring to fig. 6c, the side of the reinforcing block 5 is provided with a latch groove 18 which is fixedly clamped with the connecting plate I15.

Referring to fig. 7b, the second housing 14 is a plate structure, four edges of the surface of the plate structure are provided with edge grooves 19, and the bottom surface of the edge 10 is provided with a tooth edge 20 engaged with the edge grooves 19.

The edge 10 is formed by splicing two strip-shaped plates which are perpendicular to each other, the long edges of the two strip-shaped plates are attached to each other, and the width of each strip-shaped plate is not more than 1/3 of the side length of the shell-shaped structure. The frame construction has been constituteed to stupefied limit 10, has great fretwork area, has improved USB socket's heat dispersion, stupefied limit 10 and the preparation of the material that excels in of last arch 3 structure adoption simultaneously.

The inner side surface of each edge 10 along the length direction thereof is provided with a circuit board fixing groove 7, and the circuit board is embedded into the four circuit board fixing grooves 7 in the housing for fixing.

The tail end of each edge 10 is provided with a shell buckling hole 8. The second casing plate body is provided with and detains 8 assorted panel sockets 12 with the casing outward extension, detains hole 8 and panel sockets 12 through the casing and realizes that the concatenation of first casing and second casing is fixed. The second housing end is provided with two 220V wire ports 24.

As can be seen from fig. 3a and 3b, the distance from the lower surface of the upper protrusion 3, the lower surface of the lower protrusion 4 to the top surface of the plug portion 11 is h1, and the distance from the front end surface of the snap 6 in the panel to the surface of the panel is also h1, so that the snap strength of the ferrule on the panel is realized by adjusting the size.

The frame of the first shell is an important stressed part of the whole shell structure, and the part with smaller stress is completely hollowed out, so that the material is saved, the heat dissipation performance is improved, a heat dissipation hole is not required to be specially arranged, the stressed part is left, the material with higher strength is changed, the strength of the whole shell structure is improved, and the clamping strength of the USB charging core and the panel and the fixing strength of the charging wire and the internal circuit board are improved.

According to the invention, the USB charging socket is divided into the plug part 11, the first shell 13 and the second shell 14, wherein the first shell 13 is made of high-strength materials, important stress elements are intensively arranged as the first shell 13 to form a frame structure, the frame structure not only improves the heat dissipation performance of the USB socket, but also integrally forms the stress elements by the high-strength materials, and the integral strength and the service durability of the USB panel socket are improved due to the first shell 13 formed by the high-strength frame.

Example two

The first shell is composed of two supporting frames 17, the two supporting frames 17 are clamped on two sides of the bottom of the plug part 11, each supporting frame 17 comprises two L-shaped edges 10 which are arranged in parallel and a first connecting plate 15 arranged at the end part of each edge 10, and the supporting frames 17 form a structure with a shape like the Chinese character' v 2086620866by the two L-shaped edges 10 and the first connecting plates 15 which are symmetrically arranged.

The first connecting plates 15 of the two oppositely arranged supporting frames 17 are fixed on two sides of the bottom of the plug part 11, and the second connecting plates 16 form a first shell structure by the two oppositely arranged supporting frames 17.

Reinforcing blocks 5 are provided with four, plug portion 11 is the cuboid structure, be provided with relative right flank and left surface, and adjacent and the same relative last side and the downside that sets up with the right flank left surface, the right flank of plug portion 11 is provided with two reinforcing blocks 5, the reinforcing block 5 setting of right flank is in the crossing corner of plug portion 11 side board and connecting plate 15, the left surface of plug portion 11 is provided with two reinforcing blocks 5, the reinforcing block 5 setting of left surface is in the crossing corner of plug portion 11 side board and connecting plate 15.

The bottom of the upper bulge 3 is fixed with the upper side surfaces of the two opposite supporting frames and the plug part 11.

The inner side surface of each edge along the length direction is provided with a circuit board fixing groove 7, and the circuit board is embedded into the four circuit board fixing grooves 7 in the shell for fixing.

One end of each edge is provided with a shell buckling hole 8. The second casing plate body is provided with and detains 8 assorted panel sockets 12 with the casing outward extension, detains hole 8 and panel sockets 12 through the casing and realizes that the concatenation of first casing and second casing is fixed.

In the panel, the distance from the front end of the snap fastener 6 to the panel surface is h1, the distance from the inner side of the upper projection 3 and the lower projection 4 to the plug part 11 is also h1.

The shell-shaped structure at the rear end of the plug part 11 is inserted into each other through the first shell and the second shell to form a box-shaped structure. The second housing 14 is formed by a first plane 22 and a second plane 23 perpendicular to each other, and the cross section of the second housing is an L-shaped structure.

In the first shell 13, a plane where the first side connecting plate 15 and the edge 10 are located is provided with a filling block 20, and after the first shell 13 and the second shell 14 are spliced, the filling block 20 and the second plane 23 are arranged in parallel and oppositely.

The fillet 10 is formed by the concatenation of two mutually perpendicular's bar shaped sheet, and the long limit of two bar shaped sheet is laminated mutually, and the width of bar shaped sheet is no longer than 1/3 of shell-shaped structure side length, through the hollow out construction between the fillet 10, has improved USB socket's heat dispersion, and the fillet 10 adopts high strength material preparation with upward protruding 3 structures simultaneously. The second housing end is provided with two 220V wire ports 24.

According to the invention, the fillet 10 is arranged in an L shape, so that the supporting performance of the fillet 10 along the length direction is improved.

According to the invention, the USB charging socket is divided into three structures, namely a panel socket 12, a first shell 13 and a second shell 14, wherein the first shell 13 is made of high-strength materials, important stress elements are intensively arranged as the first shell 13 to form a frame structure, the frame structure not only improves the heat dissipation performance of the USB socket, but also integrally forms the stress elements by intensively arranging the stress elements with the high-strength materials, and the integral strength and the service durability of the USB panel socket are improved due to the first shell 13 formed by the high-strength frame. Simultaneously, the upper side surface and the lower side surface of the shell are blocked by the filling blocks 21 and the second panel 23, and the internal circuit board is protected to a certain extent.

Although the present invention has been described with reference to the preferred embodiments, it is not limited thereto. Various changes and modifications may be effected by one skilled in the art without departing from the spirit and scope of the invention, as defined in the appended claims.

Claims

1. A modularized USB charging socket comprises a plug part arranged at the front end and a shell-shaped structure arranged at the rear end of the plug part;

the shell-shaped structure at the rear end of the plug part is mutually inserted and connected through the first shell and the second shell to form a box-shaped structure;

the modularized USB charging socket is provided with an upper bulge and a lower bulge which are clamped with the RJ45 panel;

the first shell is composed of two supporting frames, the two supporting frames are clamped on two sides of the bottom of the plug part, each supporting frame comprises two L-shaped edges arranged in parallel and a first connecting plate arranged at the end part of each L-shaped edge, and the supporting frames form a structure with a cross section shaped like a Chinese character' 20866by the two L-shaped edges arranged symmetrically and the first connecting plates;

the two support frames are fixedly connected in parallel by the two connecting plates II;

the upper bulge is fixed on the second connecting plate, and the lower bulge is fixed on the lower surface of the plug part;

the first shell structure also comprises an upper bulge, and the bottom of the upper bulge is fixed with a connecting plate; the first shell is made of a high-strength material; the first shell and the second shell form a rectangular hole through the first connecting plate and the second connecting plate, and the plug portion is clamped into the rectangular hole through the reinforcing block.

2. The modular USB charging jack of claim 1 wherein there are four reinforcing blocks, the plug portion is a rectangular parallelepiped having opposing right and left sides and upper and lower sides adjacent to and also opposing the right and left sides, the right side of the plug portion has two reinforcing blocks at the corner where the right side of the plug portion meets the first connecting plate, the left side of the plug portion has two reinforcing blocks, and the left side of the plug portion has two reinforcing blocks at the corner where the left side of the plug portion meets the first connecting plate.

3. The modular USB charging jack of claim 2 wherein: the second casing is plate body structure, and plate body surface four sides are provided with the limit groove, and the bottom surface on the stupefied limit of L type is provided with the tooth limit with limit groove block.

4. The modular USB charging socket according to claim 2 wherein: the L-shaped edge is formed by splicing two strip-shaped plates which are vertical to each other, the long edges of the two strip-shaped plates are attached, the width of each strip-shaped plate is not more than 1/3 of the side length of the shell-shaped structure, and the L-shaped edge forms a frame structure; and a circuit board fixing groove is formed in the inner side surface of each L-shaped edge along the length direction of the L-shaped edge, and the circuit board is embedded into the four circuit board fixing grooves in the shell to be fixed.

5. The modular USB charging jack of claim 2 wherein: the tail end of each L-shaped edge is provided with a shell buckling hole, the second shell body is provided with a panel socket matched with the shell buckling hole in an extending mode, and the first shell and the second shell are fixedly spliced through the shell buckling hole and the panel socket.

6. The modular USB charging jack of claim 2 wherein: the second shell end is provided with two 220V wire interfaces.