CN112103728B

CN112103728B - USB connector with double shielding layers

Info

Publication number: CN112103728B
Application number: CN202010890842.4A
Authority: CN
Inventors: 韩林; 王晨焰; 颜璐瑶; 肖萍招
Original assignee: Ji'an Lianji Electronic Co ltd
Current assignee: Ji'an Lianji Electronic Co ltd
Priority date: 2020-08-29
Filing date: 2020-08-29
Publication date: 2021-09-03
Anticipated expiration: 2040-08-29
Also published as: CN112103728A

Abstract

The invention discloses a double-shielding-layer USB connector which comprises a main body, wherein symmetrically distributed spring barrels are welded at the top and the bottom of the main body, a noose is fixedly connected to one spring barrel at the bottom of the main body, springs are arranged in the inner cavities of the two spring barrels, a first rotating shaft is arranged at the center of one spring barrel above the main body, a first roller is fixedly connected to the first rotating shaft in the direction far away from the spring barrels, the first rotating shaft penetrates through the first roller and is fixedly connected with a first side plate, and a plurality of annular insulating plates distributed equidistantly are fixedly connected to the bottom of the first side plate. According to the double-shielding-layer USB connector, the data transmission line is coiled through the first roller and the main body, so that the data transmission line is convenient to store, space is saved, and the noose is fixedly connected to the bottom of the double-shielding-layer USB connector and is convenient to carry.

Description

USB connector with double shielding layers

Technical Field

The invention belongs to the technical field of computers, and particularly relates to a USB connector with double shielding layers.

Background

The USB, namely "universal serial bus", the chinese name is universal serial bus, and in daily life, it is commonly used for data communication between mobile phone and computer, and the USB interface has the characteristics of fast transmission speed, supporting hot plug and connecting multiple devices, and there are three types of USB interfaces commonly used at present: USB1.1 and USB2.0, and USB3.0 appearing in recent years, theoretically the transmission speed of USB1.1 can reach 12 Mbps/sec, while USB2.0 can reach 480 Mbps/sec, and can be downward compatible with USB 1.1.

The common USB connector needs to connect a mobile phone with a computer when in use, which needs to have a data transmission line with a certain length, if the data transmission line is longer, the longer data transmission line needs to occupy more space, which is not convenient for storage and carrying, and the common data transmission line generally has a short service life, because the mobile phone jack or the computer jack has a certain angle with a shielding line during use, once the common USB connector is pulled by a strong force, the damage of the wire core near the mobile phone jack or the computer jack is easily caused, for example, when a game is played while the mobile phone is charged by using the data transmission line, the strong pulling between the mobile phone jack or the computer jack and the data line is easily caused, the wire core of the data transmission line near the mobile phone jack or the computer jack is pulled to be broken, the data transmission line is damaged, and the common USB connector is used for transmitting data to the mobile phone, mutual interference can take place for the inside sinle silk of data transmission line, and common USB connector receives external signal's interference very easily when giving cell-phone transmission data, influences data transmission's effect.

Disclosure of Invention

The invention aims to: in order to solve the above-mentioned problems, a double-shielded USB connector is provided.

The technical scheme adopted by the invention is as follows: a USB connector with double shielding layers comprises a main body, wherein symmetrically distributed spring barrels are welded at the top and the bottom of the main body, one spring barrel at the bottom of the main body is fixedly connected with a noose, the inner cavities of the two spring barrels are respectively provided with a spring, a first rotating shaft is arranged at the center of one spring barrel above the main body, the first rotating shaft is fixedly connected with a first roller in the direction away from the spring barrels, the first rotating shaft penetrates through the first roller and is fixedly connected with a first side plate, the bottom of the first side plate is fixedly connected with a plurality of annular insulating plates which are distributed equidistantly, annular conductive strips are bonded at the positions, close to each other, of the plurality of annular insulating plates at the bottom of the first side plate, leads are welded in the first side plate, and plastic pipes are arranged at the tops of the leads, the annular conductive strips are connected with copper sliders in a sliding mode in the direction far away from the first side plate, springs are welded at the bottoms of the copper sliders, a second side plate is fixedly connected at the bottoms of the springs, a second rotating shaft is fixedly connected at the center of the bottom of the second side plate, a second roller is fixedly connected at one side far away from the second side plate, data transmission lines are wound on the outer surfaces of the first roller and the second roller and are divided into two sections, one section of the data transmission line penetrates through the outer wall of the main body at one side far away from the first roller and is fixedly connected with a computer socket, the other section of the data transmission line penetrates through the outer wall of the main body at one side far away from the second roller and is fixedly connected with a first connecting block, and a second connecting block is inserted at the bottom of the first connecting block, the two sides of the first connecting block are fixedly connected with first rectangular blocks which are symmetrically distributed, the tops of the two first rectangular blocks are provided with rectangular through holes, the bottom of the first connecting block is fixedly connected with a plurality of small copper bars which are equidistantly distributed, the top of the second connecting block is provided with a plurality of jacks corresponding to the small copper bars, the two sides of the second connecting block are fixedly connected with second rectangular blocks which are symmetrically distributed, the tops of the two second rectangular blocks are fixedly connected with rectangular sheets which are matched with the rectangular through holes in size, the central positions of the two rectangular sheets are fixedly connected with elastic sheets which are symmetrically distributed, the data transmission line is fixedly connected with a mobile phone jack at one end far away from the second connecting block, the center of the data transmission line is provided with a plurality of copper wires, and the outer walls of the copper wires are sleeved with first insulating layers, the outer wall on first insulating layer has cup jointed the aluminium foil shielding layer, the outer wall on aluminium foil shielding layer has cup jointed the second insulating layer, the outer wall on second insulating layer has cup jointed the copper wire shielding layer

In a preferred embodiment, one of the ends of the two springs at the edge is welded to the side walls of the internal chambers of the two barrels.

In a preferred embodiment, two ends of the first roller are rotatably connected with symmetrically distributed bearing seats, and the two bearing seats are welded on the side wall above the inner cavity of the main body.

In a preferred embodiment, two ends of the second roller are rotatably connected with symmetrically distributed bearing seats, and the two bearing seats are welded on the side wall below the inner cavity of the main body.

In a preferred embodiment, the top of the spring is welded with the bottom of the copper slider, and the bottom of the spring is welded with the top of the second side plate.

In a preferred embodiment, a conducting wire is welded at the bottom of each of the copper sliders, and a data transmission line is fixedly connected to the surface of the second roller through the conducting wire.

In a preferred embodiment, the plastic tube is fixedly mounted on the inner wall of the bottom of the first roller, and the plurality of wires are fixedly connected with a data transmission line through the plastic tube.

In a preferred embodiment, the second rotating shaft penetrates through the second drum and is rotatably connected with a bearing seat, the bearing seat is welded on the side wall of the bottom of the inner cavity of the main body, and one end of the spring is welded on the second rotating shaft penetrating through the bearing seat.

In a preferred embodiment, the first roller and the second roller are both hollow structures, and the first rotating shaft 4 and the second rotating shaft 29 are both hollow cylinders in appearance.

In a preferred embodiment, two ends of the elastic sheet are welded on the side walls of the rectangular sheets, and the two rectangular sheets are inserted into the rectangular through holes.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the double-shielding-layer USB connector, the data transmission line is coiled through the first roller and the main body, so that the data transmission line is convenient to store, space is saved, and the noose is fixedly connected to the bottom of the double-shielding-layer USB connector and is convenient to carry.

2. According to the USB connector with the double shielding layers, if strong pulling occurs, the first connecting block and the second connecting block can be separated, so that the phenomenon that a wire core of a data transmission line near a USB socket of a mobile phone or a USB socket of a computer is broken is avoided, and the service life of the data transmission line is prolonged.

3. According to the USB connector with the double shielding layers, the shielding wire is of a multilayer structure, the first insulating layer is sleeved on the outer wall of the copper wire, so that mutual interference when the first insulating layer conducts electricity can be prevented, and the second insulating layer is sleeved on the outer wall of the aluminum foil shielding layer, so that signal interference outside the data transmission line can be prevented.

Drawings

FIG. 1 is a schematic diagram of the appearance of the present invention;

FIG. 2 is a schematic view of the main structure of the present invention;

FIG. 3 is a schematic view of the spring structure of the present invention;

FIG. 4 is a schematic cross-sectional view of a connector according to the present invention;

FIG. 5 is a schematic diagram of the positions of the conductive strips in the present invention;

FIG. 6 is a schematic diagram of the position of a copper slider according to the present invention;

FIG. 7 is a schematic diagram of the first and second connecting blocks of the present invention;

FIG. 8 is a perspective view of a first connecting block and a second connecting block of the present invention;

fig. 9 is a schematic diagram of a shielded wire structure in the present invention.

The labels in the figure are: 1. lasso; 2. a mobile phone jack; 3. a first drum; 4. a first rotating shaft; 5. a barrel; 6. a computer socket; 7. a plastic tube; 8. a ring-shaped conductive strip; 9. a copper slider; 10. a wire; 11. a first side plate; 12. an annular insulating plate; 13. a spring; 14. a second side plate; 15. a first connection block; 16. a rectangular through hole; 17. a first rectangular block; 18. a jack; 19. a second connecting block; 20. a second rectangular block; 21. a spring plate; 22. a rectangular sheet; 23. a small copper bar; 24. an aluminum foil shielding layer; 25. a first insulating layer; 26. a copper wire; 27. a copper wire shielding layer; 28. a second insulating layer; 29. a second rotating shaft; 30. a data transmission line; 31. a second drum; 32. a main body; 33. a spiral spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 9, a double-shielding layer USB connector includes a main body 32, symmetrically distributed spring barrels 5 welded to the top and bottom of the main body 32, a noose 1 fixedly connected to one spring barrel 5 at the bottom of the main body 32, springs 33 provided in the inner chambers of the two spring barrels 5, one ends of the edges of the two springs 33 welded to the side walls of the inner chambers of the two spring barrels 5, a first shaft 4 provided at the center of one spring barrel 33 above the main body 32, a first roller 3 fixedly connected to the first shaft 4 in a direction away from the spring barrel 5, symmetrically distributed bearing seats rotatably connected to both ends of the first roller 3, the two bearing seats welded to the side walls above the inner chamber of the main body 32, a first side plate 11 fixedly connected to the first shaft 4 through the first roller 3, a plurality of annular insulating plates 12 equidistantly distributed at the bottom of the first side plate 11, annular conductive strips 8 are bonded at the positions, close to each other, of a plurality of annular insulating plates 12 at the bottom of a first side plate 11, leads 10 are welded inside the first side plate 11 of the annular conductive strips 8, plastic pipes 7 are arranged at the tops of the leads 10, the plastic pipes 7 are fixedly installed on the inner wall of the bottom of a first roller 3, the leads 10 penetrate through the plastic pipes 7 and are fixedly connected with a data transmission line 30, copper sliders 9 are connected to the annular conductive strips 8 in a sliding mode in the direction away from the first side plate 11, springs 13 are welded at the bottoms of the copper sliders 9, second side plates 14 are fixedly connected to the bottoms of the springs 13, the bottoms of the copper sliders 9 are welded at the tops of the springs 13, the bottoms of the springs 13 are welded at the tops of the second side plates 14, second rotating shafts 29 are fixedly connected to the central positions of the bottoms of the second side plates 14, and second rollers 31 are fixedly connected to the sides of the second rotating shafts 29 away from the, the first roller 3 and the second roller 31 are both of a hollow structure, the first rotating shaft 4 and the second rotating shaft 29 are both hollow cylinders, two ends of the second roller 31 are rotatably connected with bearing seats which are symmetrically distributed, the two bearing seats are welded on the side wall below the inner cavity of the main body 32, the outer surfaces of the first roller 3 and the second roller 31 are respectively wound with a data transmission line 30, the bottoms of the copper sliders 9 are respectively welded with a conducting wire, the conducting wire is fixedly connected with the data transmission line 30 on the surface of the second roller 31, the second rotating shaft 29 penetrates through the second roller 31 and is rotatably connected with the bearing seats, the bearing seats are welded on the side wall at the bottom of the inner cavity of the main body 32, the second rotating shaft 29 penetrates through the bearing seats and is welded with one end of a spiral spring 33, the data transmission line 30 is divided into two sections, one section of the data transmission line 30 penetrates through the outer wall of the main body 32 on the side far away from the first roller 3 and is fixedly connected with a computer socket 6, the double-shielding USB connector has the advantages that the data transmission line 30 is coiled through the first roller 3 and the main body 32, so that the data transmission line is convenient to store and is beneficial to saving space, the noose 1 is fixedly connected to the bottom of the double-shielding USB connector and is convenient to carry, the other section of the data transmission line 30 penetrates through the outer wall of the main body 32 at one side far away from the second roller 31 and is fixedly connected with the first connecting block 15, the second connecting block 19 is inserted into the bottom of the first connecting block 15, the first rectangular blocks 17 which are symmetrically distributed are fixedly connected to both sides of the first connecting block 15, the rectangular through holes 16 are respectively formed in the tops of the two first rectangular blocks 17, the small copper bars 23 which are equidistantly distributed are fixedly connected to the bottom of the first connecting block 15, the jacks 18 which correspond to the small copper bars 23 are formed in the top of the second connecting block 19, the second rectangular blocks 20 which are symmetrically distributed are fixedly connected to both sides of the second connecting block 19, the top parts of the two second rectangular blocks 20 are fixedly connected with rectangular sheets 22 matched with the size of the rectangular through hole 16, the central positions of the two rectangular sheets 22 are fixedly connected with elastic sheets 21 which are symmetrically distributed, two ends of each elastic sheet 21 are welded on the side wall of each rectangular sheet 22, the two rectangular sheets 22 are inserted into the rectangular through hole 16, one end of the data transmission line 30 far away from the second connecting block 19 is fixedly connected with a mobile phone jack 2, if strong pulling occurs, the first connecting block 15 is separated from the second connecting block 19, the phenomenon that a wire core of the data transmission line near the mobile phone USB jack or the computer USB jack is broken is further avoided, the service life of the data transmission line 30 is prolonged, the center of the data transmission line 30 is provided with a plurality of copper wires 26, the outer walls of the copper wires 26 are respectively sleeved with a first insulating layer 25, the outer wall of the first insulating layer 25 is sleeved with a shielding layer 24, the outer wall of aluminium foil shielding layer 24 has cup jointed second insulating layer 28, the outer wall of second insulating layer 28 has cup jointed copper wire shielding layer 27, this kind of USB connector of two shielding layers, the shielded wire adopts multilayer structure, the outer wall of copper wire 26 has cup jointed first insulating layer 25, take place mutual interference when being favorable to preventing first insulating layer 25 electrically conductive, the outer wall of aluminium foil shielding layer 24 has cup jointed second insulating layer 28, be favorable to preventing the outside signal interference of data transmission line 30.

The working principle is as follows: in the invention, the data transmission line 30 is coiled through the first roller 3 and the main body 32, so that the data transmission line is convenient to store, when the data transmission line is used, the computer socket 6 needs to be connected with a USB interface of a computer, the mobile phone socket 2 needs to be connected with a USB interface of a mobile phone, and the bottom of the USB connector with the double shielding layers is fixedly connected with the lasso 1 for convenience of carrying, so that the lasso 1 can be hung on a key buckle during carrying.

When the computer socket 6 is connected with the USB interface of a computer, firstly, the computer socket 6 fixedly connected with the data transmission line 30 is pulled, so that the data transmission line 30 drives the first roller 3 to rotate, the first roller 3 drives the first rotating shaft 4 to rotate while rotating, so that the first rotating shaft 4 drives the inner ring of the clockwork spring 33 to rotate, at the moment, the clockwork spring 33 starts to accumulate force, when the data transmission line 30 fixedly connected with the computer socket 6 reaches the required length, at the moment, the computer socket 6 is inserted into the USB interface of the computer, after the computer socket 6 is pulled out of the USB interface of the computer, at the moment, the clockwork spring 33 drives the first rotating shaft 4 to rotate, and meanwhile, the first rotating shaft 4 drives the first roller 3 to rotate, so that the data transmission line 30 fixedly connected with the computer socket 6 is contracted and is wound on the outer surface of the first roller 3.

When the mobile phone jack 2 is connected with the USB interface of the mobile phone, firstly, the mobile phone jack 2 fixedly connected with the data transmission line 30 is pulled, so that the data transmission line 30 drives the second roller 31 to rotate, the second roller 31 rotates, the second rotating shaft 29 drives the inner ring of the clockwork spring 33 to rotate, at the moment, the clockwork spring 33 starts to accumulate force, when the data transmission line 30 fixedly connected with the mobile phone jack 2 reaches the required length, the mobile phone jack 2 is inserted into the USB interface of the mobile phone, after the mobile phone jack 2 is pulled out of the USB interface of the mobile phone, the clockwork spring 33 drives the second rotating shaft 29 to rotate, and meanwhile, the second rotating shaft 29 drives the second roller 31 to rotate, so that the data transmission line 30 fixedly connected with the mobile phone jack 2 is contracted and is wound on the outer surface of the second roller 31.

In the invention, the data transmission between the computer and the mobile phone is realized by connecting the computer jack 6 with the USB interface of the computer and connecting the mobile phone jack 2 with the USB interface of the mobile phone, wherein when the first roller 3 and the second roller 31 rotate, the normal transmission of data is still kept, the computer jack 6 fixedly connected with the data transmission line 30 is pulled, so that the data transmission line 30 drives the first roller 3 to rotate, when the first roller 3 rotates, the first rotating shaft 4 drives the first side plate 11 to rotate, at the moment, the annular conductive bar 8 is always connected with the copper sliding block 9 in a sliding way, the mobile phone jack 2 fixedly connected with the data transmission line 30 is pulled, so that the data transmission line 30 drives the second roller 31 to rotate, when the second roller 31 rotates, the second rotating shaft 29 drives the second side plate 14 to rotate, at the moment, the copper sliding block 9 is always connected with the annular conductive bar 8 in a sliding way, the copper slider 9 and the annular conductive strip 8 always form sliding connection, so that the data line still keeps normal data transmission when the first roller 3 and the second roller 31 rotate.

According to the USB connector with the double shielding layers, the second connecting block 19 is inserted into the bottom of the first connecting block 15, the small copper rod 23 is inserted into the jack 18, the rectangular sheet 22 is inserted into the rectangular through hole 16, the elastic sheets 21 which are symmetrically distributed are fixedly connected to the central positions of the two rectangular sheets 22, when the rectangular sheets 22 are inserted into the rectangular through hole 16, the elastic sheets 21 enable the first connecting block 15 and the second connecting block 19 to be connected more reliably under the action of elastic force, if strong pulling occurs, the data transmission line 30 cannot be bent or broken near a mobile phone USB socket or a computer USB socket under the action of strong pulling, and at the moment, the first connecting block 15 is separated from the second connecting block 19, so that the service life of the data transmission line 30 is prolonged.

According to the USB connector with the double shielding layers, the shielding wire is of a multilayer structure, the first insulating layer 25 is sleeved on the outer wall of the copper wire 26, so that mutual interference when the first insulating layer 25 conducts electricity can be prevented, and the second insulating layer 28 is sleeved on the outer wall of the aluminum foil shielding layer 24, so that signal interference outside the data transmission line 30 can be prevented.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A double-shielded USB connector comprising a main body (32), characterized in that: the spring barrel is characterized in that symmetrically distributed spring barrels (5) are welded at the top and the bottom of the main body (32), one spring barrel (5) at the bottom of the main body (32) is fixedly connected with a noose (1), two spring barrels (33) are arranged in inner cavities of the spring barrels (5), a first rotating shaft (4) is arranged at the center of one spring barrel (33) above the main body (32), the first rotating shaft (4) is fixedly connected with a first roller (3) in the direction far away from the spring barrels (5), the first rotating shaft (4) penetrates through the first roller (3) and is fixedly connected with a first side plate (11), a plurality of annular insulating plates (12) which are distributed at equal intervals are fixedly connected with the bottom of the first side plate (11), and annular conductive strips (8) are bonded at positions where the annular insulating plates (12) are close to each other, a plurality of conducting wires (10) are welded inside the first side plate (11) of the annular conducting strips (8), plastic pipes (7) are arranged at the tops of the conducting wires (10), a plurality of copper sliders (9) are connected to the annular conducting strips (8) in a sliding mode in the direction away from the first side plate (11), springs (13) are welded to the bottoms of the copper sliders (9), a second side plate (14) is fixedly connected to the bottoms of the springs (13), a second rotating shaft (29) is fixedly connected to the center of the bottom of the second side plate (14), a second roller (31) is fixedly connected to one side, away from the second side plate (14), of the second rotating shaft (29), data transmission lines (30) are wound on the outer surfaces of the first roller (3) and the second roller (31), and the data transmission lines (30) are divided into two sections, one section of the data transmission line (30) penetrates through the outer wall of the main body (32) at one side far away from the first roller (3) and is fixedly connected with a computer socket (6), the other section of the data transmission line (30) penetrates through the outer wall of the main body (32) at one side far away from the second roller (31) and is fixedly connected with a first connecting block (15), the bottom of the first connecting block (15) is spliced with a second connecting block (19), two sides of the first connecting block (15) are fixedly connected with first rectangular blocks (17) which are symmetrically distributed, rectangular through holes (16) are formed in the tops of the two first rectangular blocks (17), a plurality of small copper rods (23) which are distributed at equal intervals are fixedly connected to the bottom of the first connecting block (15), a plurality of jacks (18) corresponding to the small copper rods (23) are formed in the top of the second connecting block (19), the two sides of the second connecting block (19) are fixedly connected with second rectangular blocks (20) which are symmetrically distributed, the tops of the two second rectangular blocks (20) are fixedly connected with rectangular sheets (22) which are matched with the rectangular through holes (16) in size, the central positions of the two rectangular sheets (22) are fixedly connected with elastic sheets (21) which are symmetrically distributed, one end of the data transmission line (30) far away from the second connecting block (19) is fixedly connected with a mobile phone jack (2), a plurality of copper wires (26) are arranged at the center of the data transmission line (30), the outer walls of the copper wires (26) are sleeved with first insulating layers (25), the outer wall of the first insulating layer (25) is sleeved with an aluminum foil shielding layer (24), the outer wall of the aluminum foil shielding layer (24) is sleeved with a second insulating layer (28), and a copper wire shielding layer (27) is sleeved on the outer wall of the second insulating layer (28).

2. A double shielded USB connector as claimed in claim 1, wherein: one end of the edge of each spring (33) is welded on the side wall of the inner cavity of each spring box (5).

3. A double shielded USB connector as claimed in claim 1, wherein: the two ends of the first roller (3) are rotatably connected with symmetrically distributed bearing seats, and the two bearing seats are welded on the side wall above the inner cavity of the main body (32).

4. A double shielded USB connector as claimed in claim 1, wherein: the two ends of the second roller (31) are rotatably connected with symmetrically distributed bearing seats, and the two bearing seats are welded on the side wall below the inner cavity of the main body (32).

5. A double shielded USB connector as claimed in claim 1, wherein: the top of the spring (13) is welded with the bottom of the copper sliding block (9), and the bottom of the spring (13) is welded with the top of the second side plate (14).

6. A double shielded USB connector as claimed in claim 1, wherein: and conducting wires are welded at the bottoms of the copper sliding blocks (9) and fixedly connected with a data transmission line (30) on the surface of the second roller (31).

7. A double shielded USB connector as claimed in claim 1, wherein: the plastic pipe (7) is fixedly arranged on the inner wall of the bottom of the first roller (3), and the plurality of leads (10) penetrate through the plastic pipe (7) and are fixedly connected with a data transmission line (30).

8. A double shielded USB connector as claimed in claim 1, wherein: the second rotating shaft (29) penetrates through the second roller (31) and is rotatably connected with a bearing seat, the bearing seat is welded on the side wall of the bottom of the inner cavity of the main body (32), and the second rotating shaft (29) penetrates through the bearing seat and is welded with one end of the clockwork spring (33).

9. A double shielded USB connector as claimed in claim 1, wherein: the first roller (3) and the second roller (31) are both hollow structures, and the appearances of the first rotating shaft (4) and the second rotating shaft (29) are both hollow cylinders.

10. A double shielded USB connector as claimed in claim 1, wherein: the two ends of the elastic sheet (21) are welded on the side walls of the rectangular sheets (22), and the two rectangular sheets (22) are inserted into the rectangular through holes (16).