CN209823047U - Two-way single-pull type telescopic data line storage device - Google Patents

Abstract

The utility model provides a flexible data line device of accomodating of two-way single-pull formula, it includes first data line, the second data line, a first rolling subassembly for making first data line automatic rolling, a second rolling subassembly for making second data line automatic rolling, first follow-up circuit board, second follow-up circuit board, conductive connecting piece and fixed baseplate, it utilizes two data lines and two rolling subassemblies to realize drawing of data line, make the one end of individual pulling data line that the user can be free, convenience of customers stretches according to required length, and can avoid the card line. Furthermore, the utility model discloses a follow-up circuit board along with the coaxial pivoted of data line realizes the electricity between two data lines and connects to can avoid the data line to twist reverse the fracture at tensile rolling in-process that relapse, improve validity and the stability of electricity connection between two data lines, not only can improve the life of data line, can improve data line current bearing capacity moreover.

Description

Two-way single-pull type telescopic data line storage device

[ technical field ] A method for producing a semiconductor device

The utility model relates to a data line, in particular to flexible data line device of accomodating of two-way single formula of drawing.

[ background of the invention ]

With the popularization of electronic products, data lines are used more and more, and data lines owned by users are also more and more. In daily use, the data cable is quite easy to be wound together with other wires, such as other data cables, earphone cables, and the like. When various wires are wound together, it not only causes confusion and an unattractive appearance, but also causes inconvenience in use for users. Therefore, many retractable data lines are available in the market, when the retractable data lines are used, the data lines can be pulled out for use, and when the retractable data lines are not needed to be used, the data lines can be automatically wound, so that the problems of winding of the data lines and the like can be avoided.

The existing telescopic data line is usually stretched bidirectionally or unidirectionally in two lines, a winding disc is arranged in the data line to drive a complete data line to wind, when the data line is used, two ends of the data line can be wound or pulled out simultaneously, and a user cannot stretch the data line according to the required length and cannot stretch one end independently; on the other hand, the double-wire stretching method easily causes the problem of internal wire clamping, and the whole device is damaged.

[ Utility model ] content

The utility model aims at solving the above problem, and provides a flexible data line device of accomodating of two-way single-pull formula.

In order to solve the above problem, the utility model provides a two-way single-pull type flexible data line storage device, which is characterized in that the device comprises a first data line, a second data line, a first winding component for automatically winding the first data line, a second winding component for automatically winding the second data line, a first follow-up circuit board, a second follow-up circuit board, a conductive connecting piece and a fixed base, wherein the first winding component and the second winding component are respectively arranged at two opposite sides of the fixed base; the first data wire is wound on the first winding component; the second data wire is wound on the second winding component; the first follow-up circuit board is arranged on the first winding component and is electrically connected with the first data wire, and the first follow-up circuit board can coaxially rotate along with the first data wire wound on the first winding component; the second follow-up circuit board is fixed on the second rolling component and is electrically connected with the second data wire, and the second data wire can coaxially rotate along with the second data wire wound on the second rolling component; the first follow-up circuit board and the second follow-up circuit board are arranged on the same side of the fixed base, the first data line and the second data line are arranged on the same side of the fixed base, and the first follow-up circuit board and the second follow-up circuit board are arranged on the same side of the fixed base.

Furthermore, the conductive connecting piece comprises a plurality of metal elastic sheets, a plurality of elastic sheet holes are formed in the fixed base, the middle of each metal elastic sheet penetrates through each elastic sheet hole, and two ends of each metal elastic sheet are located on two sides of the fixed base respectively and are in contact connection with the conductive rings on the same circumference on the first follow-up circuit board and the second follow-up circuit board respectively.

Furthermore, at least two positioning holes are respectively arranged on each metal elastic sheet, protruding parts protruding in opposite directions are respectively arranged on the end parts of each metal elastic sheet, positioning columns are respectively arranged on the surfaces of the two sides of the fixed base, where the sheet spring holes are arranged, of the fixed base, the positioning holes of each metal elastic sheet are respectively sleeved on the positioning columns on the surfaces of the two sides of the fixed base, and the protruding parts at the two ends of each metal elastic sheet respectively protrude towards the first follow-up circuit board and the second follow-up circuit board and are respectively contacted with the conductive rings on the same circumference of the first follow-up circuit board and the second follow-up circuit board.

Furthermore, the conductive connecting piece comprises a plurality of metal beads, a plurality of bead holes in which the metal beads are embedded are formed in the fixed base, and the metal beads are respectively arranged in the bead holes and are respectively in contact connection with the conductive rings on the same circumference on the first follow-up circuit board and the second follow-up circuit board.

Further, the first rolling component comprises a first rotating disk, a first coil spring and a first cover plate, the first rotating disc is provided with a cylindrical first boss part, the first boss part is hollow to form a first accommodating groove with one open end, the first rotating disc is coaxial with the first accommodating groove, the first data wire is wound on the first boss part, the first coil spring is arranged in the first accommodating groove, the movable end of the first coil spring is connected with the first rotating disc, the fixed end of the first coil spring is connected with the fixed base, the first cover plate is connected with the open end of the first accommodating groove, the first follow-up circuit board is fixedly arranged on the first rotating disc and is coaxial with the first boss part, the first coil spring and the first follow-up circuit board are respectively positioned on two opposite sides of the first cover plate, and the first follow-up circuit board is positioned between the first rotating disk and the fixed base; the second winding component comprises a second rotating disk, a second coil spring and a second cover plate, the second rotating disk is provided with a cylindrical second boss part, the second boss part is hollow to form a second accommodating groove with one open end, the second rotating disc is coaxial with the second accommodating groove, the second data wire is wound on the second boss part, the second coil spring is arranged in the second accommodating groove, the movable end of the second coil spring is connected with the second rotating disk, the fixed end of the second coil spring is connected with the fixed base, the second cover plate is connected with the open end of the second accommodating groove, the second follow-up circuit board is fixedly arranged on the second rotating disc and is coaxial with the second boss part, the second coil spring and the second follow-up circuit board are respectively positioned on two opposite sides of the second cover plate, and the second follow-up circuit board is positioned between the second rotating disk and the fixed base.

Further, a first rotating shaft part and a second rotating shaft part are respectively vertically arranged on the two side surfaces of the fixed base, and the first rotating shaft part and the second rotating shaft part are coaxial; the first rotating disc is sleeved on the first rotating shaft part and can rotate around the first rotating shaft part, and the first boss part is coaxial with the first rotating shaft part; the second rotating disc is sleeved on the second rotating shaft part and can rotate around the second rotating shaft part, and the second boss part is coaxial with the second rotating shaft part.

Furthermore, a first inlet and a first outlet are arranged on the first boss part, the first inlet and the first outlet are respectively communicated with the first accommodating groove, and a connecting end of the first data line enters the first accommodating groove from the first inlet and then is led out from the first outlet to be electrically connected with the first follow-up circuit board; and a second inlet and a second outlet are arranged on the second boss part, the second inlet and the second outlet are respectively communicated with the second accommodating groove, and a connecting end of the second data line enters the second accommodating groove from the second inlet and then is led out from the second outlet to be electrically connected with the second follow-up circuit board.

Furthermore, a first coil spring partition plate and a first data line partition plate are arranged in the first accommodating groove, the first coil spring partition plate and the first data line partition plate are respectively arc-shaped plates which are vertically arranged and are respectively spaced from the inner wall of the first accommodating groove to form a first coil spring routing channel and a first data line routing channel, the end part of the first coil spring partition plate is respectively spaced from the end part of the first data line partition plate, the first coil spring is arranged in the first coil spring partition plate and the first data line partition plate, the fixed end of the first coil spring is fixedly connected with the first spindle part, and the movable end of the first coil spring penetrates through the first coil spring routing channel and is reversely bent on the first coil spring partition plate; two ends of the first data line routing channel are respectively communicated with the first inlet and the first outlet, and the connecting end of the first data line is welded with the first follow-up circuit board through the first inlet, the first data line routing channel and the first outlet in sequence; a second coil spring partition plate and a second data line partition plate are arranged in the second accommodating groove, the second coil spring partition plate and the second data line partition plate are respectively vertically arranged arc-shaped plates and are respectively spaced from the inner wall of the second accommodating groove to form a second coil spring wiring channel and a second data line wiring channel, the end part of the second coil spring partition plate is respectively spaced from the end part of the second data line partition plate, the second coil spring is arranged in the second coil spring partition plate and the second data line partition plate, the fixed end of the second coil spring is fixedly connected with the second rotating shaft part, and the movable end of the second coil spring penetrates through the second coil spring wiring channel and is reversely bent on the second coil spring partition plate; two ends of the second data line routing channel are respectively communicated with the second inlet and the second outlet, and the connecting end of the second data line sequentially passes through the second inlet, the second data line routing channel and the second outlet and is welded with the second follow-up circuit board.

Furthermore, a plurality of first anti-slip grooves which are vertically arranged at intervals are formed in the inner wall of the first data line routing channel, and a plurality of second anti-slip grooves which are vertically arranged at intervals are formed in the inner wall of the second data line routing channel.

Furthermore, a first wire partition plate and a second wire partition plate are respectively arranged on the surfaces of two sides of the fixed base, the first wire partition plate and the second wire partition plate are arc plates which are vertically arranged, a shell is arranged outside the fixed base, a first wire drawing hole and a second wire drawing hole are arranged on the shell, the end part of the first wire partition plate corresponds to the first wire drawing hole, the end part of the second wire partition plate corresponds to the second wire drawing hole, and the movable end of the first data wire penetrates through the first wire drawing hole along the first wire partition plate and is arranged outside the shell; the movable end of the second data line passes through the second wire drawing hole along the second lead clapboard and is arranged outside the shell; a first stopping ball for stopping the first data line at the current drawing position is arranged between the first boss part and the housing, and a second stopping ball for stopping the second data line at the current drawing position is arranged between the second boss part and the housing.

The beneficial contributions of the utility model reside in that, it has effectively solved above-mentioned problem. The utility model discloses a flexible data line device of accomodating of two-way single-drawing formula utilizes two data lines and two rolling subassemblies to realize drawing of receipts of data line for the one end of independent pulling data line that the user can be free, and convenience of customers stretches according to required length, and can avoid the card line. Furthermore, the utility model discloses a flexible data line device of accomodating of two-way single-drawing formula adopts along with the coaxial pivoted follow-up circuit board of data line to realize the electricity between two data lines and connect to can avoid the data line to twist reverse fracture at tensile rolling in-process that relapses, improved validity and the stability of electricity connection between two data lines, not only can improve the life of data line, can improve data line current bearing capacity moreover. The utility model discloses a flexible data line device of accomodating of two-way single-drawing formula has novel structure, convenient to use, stable performance's characteristics, and it has very strong practicality, should widely popularize.

[ description of the drawings ]

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is an exploded view of embodiment 1.

FIG. 3 is a longitudinal sectional view of embodiment 1.

FIG. 4 is an exploded view of embodiment 2.

FIG. 5 is a longitudinal sectional view of embodiment 2.

FIG. 6 is a cross-sectional view of embodiment 1.

Fig. 7 is a schematic structural view of the first and second rotating disks.

Fig. 8 is a schematic structural view of a fixing base of embodiment 2.

Fig. 9 is a schematic structural view of the fixing base and the metal dome of embodiment 1.

Fig. 10 is an assembly view of the first rotating disk, the fixed base, the first follower circuit board, and the first cover plate.

Fig. 11 is an assembly view of the first rotating disk, the fixed base, the first follower circuit board, the first cover plate, and the second rotating disk.

Among them, the first data line 11, the second data line 12, the connection terminal 13, the connection cable 14, the first follow-up circuit board 21, the second follow-up circuit board 22, the conductive ring 23, the solder joint 24, the first rolling component 30, the first rotating disk 31, the first disk part 311, the first boss part 312, the first receiving groove 313, the first shaft hole 314, the first data line partition 315, the first coil spring routing channel 316, the first inlet 317, the first outlet 318, the first coil spring partition 319, the first data line routing channel 3190, the first anti-slip groove 3191, the first coil spring 32, the first cover plate 33, the second rolling component 40, the second rotating disk 41, the second disk part 411, the second boss part 412, the second receiving groove 413, the second shaft hole 414, the second data line partition 415, the second coil spring routing channel 416, the second inlet 417, the second outlet 418, the second coil spring partition 419, the second coil wire channel 4190, the second coil spring routing channel 4190, The anti-slip device comprises a second anti-slip groove 4191, a second coil spring 42, a second cover plate 43, a conductive connecting piece 70, a metal elastic sheet 71, a positioning hole 711, a boss 712, a metal bead 72, a fixed base 80, an elastic sheet hole 81, a positioning column 82, a main body part 83, a first rotating shaft part 84, a second rotating shaft part 85, a first lead clapboard 86, a second lead clapboard 87, a screw hole 88, an inserting hole 89, a bead hole 890, a shell 90, a first wire drawing hole 91, a second wire drawing hole 92, a decorative plate 93, a first stop ball 101 and a second stop ball 102.

[ detailed description ] embodiments

The following examples are further to explain and supplement the present invention, and do not constitute any limitation to the present invention.

Example 1

As shown in fig. 1, fig. 2, fig. 3, the utility model discloses a flexible data line device of accomodating of two-way single-pull formula's main points lie in, and it is equipped with two data lines and two rolling subassemblies, and every data line can stimulate and the rolling alone, and realizes turn-on connection through ingenious circuit structure between two data lines, can avoid the data line to twist reverse the fracture because of relapse pull rolling, can improve circuit connection's stability and electric current bearing capacity between the data line.

As shown in fig. 1, fig. 2 and fig. 3, in particular, the two-way single-pull type retractable data line storage device of the present invention includes a first data line 11, a second data line 12, a first winding assembly 30, a second winding assembly 40, a first follow-up circuit board 21, a second follow-up circuit board 22, a conductive connecting member 70, a fixing base 80, a housing 90 and a stop ball 100.

As shown in fig. 2, the first data line 11 and the second data line 12 may be data lines of the same type or data lines of different types, and each of the data lines includes at least one connection terminal 13 and one connection cable 14. The connection terminal 13 may be one or more of conventional connection terminals 13, such as a Type C male socket terminal, a Type C female socket terminal, a Lightning male socket terminal, a Lightning female socket terminal, a USB male socket terminal, and the like. The connection of the connection cable 14 to the connection terminal 13 is referred to a known technique. The connection cable 14 of the first data line 11 and the second data line 12 has one end connected to the connection terminal 13 and the other end as a bare end, and is respectively used for being connected to the first follow-up circuit board 21 and the second follow-up circuit board 22. In this embodiment, the connection terminal 13 of the first data line 11 and the connection terminal 13 of the second data line 12 are preferably a female socket terminal and a male socket terminal. In other embodiments, the connection terminal 13 may be provided as needed. In this embodiment, the connection cable 14 of the first data line 11 and the second data line 12 includes four wire cores respectively, two of the four wire cores are used for supplying power, and two of the four wire cores are used for transmitting data. In other embodiments, the number of cores inside the connection cable 14 may be set according to the known technology, for example, two cores may also be set. For convenience of description, the ends of the first and second data lines 11 and 12, at which the connection terminals 13 are disposed, are called active ends, and the ends thereof, at which the connection terminals 13 are not disposed, are called connection ends.

As shown in fig. 2 and 3, the first follower circuit board 21 is configured to coaxially rotate with the first data line 11 to keep the connection end of the first data line 11 from being torsionally disabled. The second follower circuit board 22 is configured to rotate coaxially with the second data line 12 to keep the connection end of the second data line 12 from being twisted. In order to facilitate the first follow-up circuit board 21 and the second follow-up circuit board 22 to maintain electrical connection during the rotation process, a plurality of conductive rings 23 are respectively disposed on one side surfaces of the first follow-up circuit board 21 and the second follow-up circuit board 22. The conductive rings 23 are respectively circular, concentrically arranged, and spaced at a certain distance. The number of the conductive loops 23 is related to the number of the wire cores inside the first data line 11 and the second data line 12, and is in a one-to-one correspondence relationship. In this embodiment, since 4 wire cores are disposed inside the first data line 11 and the second data line 12, 4 conductive rings 23 are disposed on the surfaces of the first follow-up circuit board 21 and the second follow-up circuit board 22, respectively. The conductive ring 23 is made of a conductive material, which functions as a conductive connection. In this embodiment, the conductive ring 23 is a copper ring.

The first and second follower circuit boards 21 and 22 may be shaped as desired, and in this embodiment, they are preferably circular plate-shaped.

As shown in fig. 2, in order to facilitate connection of the first data line 11 and the second data line 12, four solder points 24 are respectively disposed on the first follow-up circuit board 21 and the second follow-up circuit board 22. The pads 24 are in communication with the conductive rings 23, respectively. The four wire cores inside the first data line 11 and the second data line 12 are respectively welded with the corresponding welding points 24, and can be respectively communicated with the conducting rings 23.

As shown in fig. 2 and 3, the conductive connector 70 is used to conductively connect the first follower circuit board 21 and the second follower circuit board 22, and more specifically, the conductive connector 70 is used to conductively connect the conductive rings 23 on the first follower circuit board 21 and the second follower circuit board 22, so as to electrically connect the first data line 11 and the second data line 12.

In this embodiment, as shown in fig. 2 and fig. 9, the conductive connecting member 70 is implemented by using a plurality of metal elastic pieces 71.

As shown in fig. 9, the metal elastic pieces 71 are used to connect the conductive rings 23 at the same circumference one by one to communicate the first follow-up circuit board 21 and the second follow-up circuit board 22. The number of the metal elastic sheets 71 is related to the number of the wire cores inside the first data line 11 and the second data line 12, the number of the metal elastic sheets should be not less than the number of the wire cores inside the first data line 11 and/or the second data line 12, and the specific number of the metal elastic sheets can be set as required. Since the first follow-up circuit board 21 and the second follow-up circuit board 22 are respectively provided with 4 conductive rings 23, the number of the metal elastic pieces 71 is at least 4. In this embodiment, in order to enhance the stability of the electrical connection between the first follow-up circuit board 21 and the second follow-up circuit board 22, there are 16 metal elastic pieces 71, which are divided into four groups, and 4 metal elastic pieces 71 in each group are respectively in contact with and conducted with the conductive ring 23 on the same circumference. In other embodiments, the metal elastic pieces 71 may also be arranged as a group, i.e. 4 metal elastic pieces. When the number of the wire cores inside the first data line 11 and the second data line 12 is 2, the number of the metal elastic sheets 71 is at least 2. When the number of the metal dome 71 is increased, for example, by groups, the electrical connection relationship between the first follower circuit board 21 and the second follower circuit board 22 can be made more stable, and the current transmission capability can be improved for transmitting a larger current.

As shown in fig. 9, the metal elastic sheet 71 is in a long strip shape, and the middle portion of the metal elastic sheet is bent to pass through the elastic sheet hole 81 on the fixed base 80 and be located at two sides of the fixed base 80. For the convenience of fixing, at least two positioning holes 711 are respectively disposed on the metal elastic sheet 71, and are used for being sleeved on the positioning columns 82 of the fixing base 80 to prevent falling off. The two ends of the metal spring 71 are respectively provided with protrusions 712 protruding in opposite directions for contacting and conducting with the conductive ring 23.

As shown in fig. 9, in order to fix the metal elastic pieces 71 conveniently to realize the circuit conduction between the first follow-up circuit board 21 and the second follow-up circuit board 22, elastic piece holes 81 are formed in the fixing base 80, and the number of the elastic piece holes is equal to that of the metal elastic pieces 71. The leaf spring hole 81 is sized to allow the metal leaf spring 71 to pass therethrough. The shape of the blade hole 81 may be set as desired. In order to fix the metal elastic sheet 71 conveniently, positioning columns 82 are respectively disposed on the two side surfaces of the fixing base 80 having the elastic sheet hole 81, and the positioning columns 82 located at the two sides of the same elastic sheet hole 81 are staggered, so that each metal elastic sheet 71 can be sleeved on the two positioning columns 82 and correspond to the conductive ring 23 at the same circumference.

During installation, as shown in fig. 9, the middle portion of each metal spring 71 passes through the spring hole 81, and the positioning hole 711 of the metal spring 71 is sleeved on the corresponding positioning column 82, so that the two ends of the metal spring 71 are respectively located at two opposite sides of the fixed base 80, and the protruding portions 712 at the two ends of the metal spring 71 respectively face the first follow-up circuit board 21 and the second follow-up circuit board 22 and can be in contact with the conductive rings 23 on the same circumference of the first follow-up circuit board 21 and the second follow-up circuit board 22.

As shown in fig. 3, by disposing a plurality of metal elastic pieces 71 on the fixed base 80, the conductive rings 23 on the same circumference of the first and second follow-up circuit boards 21 and 22 can be connected by the contact between the metal elastic pieces 71 and the conductive rings 23, so as to connect the first and second data lines 11 and 12.

As shown in fig. 2, 3 and 9, in order to facilitate the installation of the first winding member 30 and the second winding member 40 and the drawing of the first data line 11 and the second data line 12, the fixed base 80 is configured to include a disk-shaped main body portion 83, a first rotating shaft portion 84, a second rotating shaft portion 85, a first lead spacer 86 and a second lead spacer 87. In this embodiment, the main body portion 83, the first rotation shaft portion 84, the second rotation shaft portion 85, the first lead partition 86, and the second lead partition 87 are integrally formed.

As shown in fig. 2, the first and second rotating shaft portions 84 and 85 are cylindrical and are coaxially disposed, and are respectively vertically disposed at the centers of the opposite side surfaces of the body portion 83. To facilitate the fastening of the housing 90 by screws, axial screw holes 88 are provided in the ends of the first and second shaft portions 84 and 85, respectively. In order to facilitate fixing of the first and second coil springs 32 and 42, in the present embodiment, insertion holes 89 are provided in the first and second shaft portions 84 and 85 in the radial direction, and the insertion holes 89 penetrate from one end portion to the other end portion in the axial direction thereof.

As shown in fig. 2 and 9, the first wire spacer 86 and the second wire spacer 87 are disposed at the edge of the main body portion 83, and are respectively disposed at two opposite sides of the main body portion 83. The first wire baffle 86 and the second wire baffle 87 are vertically arranged arc plates respectively. The first and second conductive line spacers 86 and 87 are disposed opposite to each other and serve as conductive lines to facilitate the drawing of the first and second data lines 11 and 12.

In this embodiment, the first and second rotating shaft portions 84 and 85 are symmetrically disposed, and the first and second lead spacers 86 and 87 are centrosymmetrically disposed.

The first winding component 30 is used for automatically winding the first data line 11, and the second winding component 40 is used for automatically winding the second data line 12.

As shown in fig. 2, the first winding assembly 30 includes a first rotating disk 31, a first coil spring 32 and a first cover plate 33.

As shown in fig. 2, 7, 11, and 10, the first rotary disk 31 includes a first disk portion 311 and a first boss portion 312. The first boss portion 312 has a hollow cylindrical shape, and is hollow to form a first receiving groove 313 with one open end. The first disc portion 311 is provided at an edge of the first boss portion 312. The first disc portion 311 is integrally formed with the first boss portion 312. For rotation, a first shaft hole 314 is formed in the center of the first boss 312, and the size of the first shaft hole 314 matches the size of the first shaft portion 84, and the first shaft hole can be sleeved on the first shaft portion 84. In order to facilitate the installation of the first cover plate 33 and the first follower circuit board 21, a first step is disposed at an open end of the first receiving groove 313, a second step is disposed outside the first step, and the first step and the second step are annular and concentrically disposed. In order to connect the first data line 11 to the first follower circuit board 21, a first inlet 317 and a first outlet 318 are provided on the first boss portion 312. The first inlet 317 and the first outlet 318 are disposed at an interval, and are respectively communicated with the first receiving groove 313. In this embodiment, the first inlet 317 and the first outlet 318 are provided on a circumferential sidewall of the first boss portion 312, and extend to the first disc portion 311. In addition, a first coil spacer 319 and a first data line spacer 315 are disposed in the first receiving groove 313. The first coil spring partition 319 and the first data line partition 315 are vertically disposed arc-shaped plates, and are integrally formed with the first rotating disk 31. The first coil spring partition 319 and the inner wall of the first receiving groove 313 are spaced to form a first coil spring routing channel 316; the first data line partition 315 and the inner wall of the first receiving groove 313 are spaced to form a first data line routing channel 3190. The ends of the first coil spacer 319 are spaced apart from the ends of the first data line spacer 315, respectively. Both ends of the first data line spacer 315 are respectively connected to the first inlet 317 and the first outlet 318. In order to avoid the looseness of the connection end of the first data line 11, a plurality of first anti-slip grooves 3191 are arranged on the inner wall of the first data line routing channel 3190 at vertical intervals. In this embodiment, the first anti-slip groove 3191 is disposed on an inner wall of the first accommodating groove 313 facing the first data line partition 315, and in other embodiments, the first anti-slip groove 3191 may also be disposed on an inner wall of the first data line partition 315 facing the first accommodating groove 313.

When the first rotating disc 31 is mounted, as shown in fig. 3 and 10, the first rotating disc 31 is sleeved on the fixed base 80, and the first shaft hole 314 of the first rotating disc 31 corresponds to the first rotating shaft 84, so that the first rotating disc 31 can rotate around the first rotating shaft 84. The open end of the first rotating disk 31 faces the fixed base 80. The first coil spring 32 is disposed in the first receiving groove 313, specifically, between the first data line partition 315 and the first coil spring partition 319, a fixed end of the first coil spring 32 is inserted into the insertion hole 89 of the first rotation axis 84 and is fixedly connected to the first rotation axis 84, and a movable end of the first coil spring 32 passes through the first coil spring routing channel 316 and is reversely bent on the first coil spring partition 319, so as to be linked with the first rotation disc 31. The first cover plate 33 is in a circular plate shape, is disposed at the open end of the first receiving groove 313, and is fixed at the first step to seal the first receiving groove 313, so that the first coil spring 32 is relatively enclosed in the first receiving groove 313. As shown in fig. 3, the first follower circuit board 21 is fixed at a second step of the first rotating disk 31, which is located between the first cover plate 33 and the fixed base 80. As shown in fig. 3 and 10, the diameter of the first follower circuit board 21 is larger than that of the first cover plate 33, so that the first follower circuit board 21 can be exposed at the first inlet 317 and the first outlet 318, thereby facilitating connection with the connection terminal of the first data line 11. The first data line 11 is wound around the outside of the first boss portion 312, and is disposed coaxially with the first boss portion 312. As shown in fig. 6 and 10, the connection end of the first data line 11 passes through the first inlet 317, passes through the first data line routing channel 3190, is led out from the first outlet 318, and is soldered to the solder point 24 of the first follower circuit board 21. The movable end of the first data line 11 is disposed along the first conductive partition 86 of the fixed base 80 and extends out of the housing 90. Thus, the first data line 11 and the first rotating disc 31 are coaxially arranged, the first rotating disc 31 is linked with the first coil spring 32, the first follow-up circuit board 21 is fixed on the first rotating disc 31 and can synchronously rotate along with the first rotating disc 31, and the connecting end of the first data line 11 is electrically connected with the first follow-up circuit board 21. When the first data line 11 is pulled, the first coil spring 32 is stressed, when the first data line 11 loses tension, the first coil spring 32 resets to drive the first rotating disk 31 to rotate so as to wind the first data line 11, and when the first rotating disk 31 rotates, the first follow-up circuit board 21 rotates along with the first rotating disk 31, so that the connection between the connection end of the first data line 11 and the first follow-up circuit board 21 is relatively static, and the connection end of the first data line 11 cannot be twisted or failed. Moreover, the connection end of the first data line 11 is clamped in the first data line routing channel 3190, and the first anti-slip groove 3191 is disposed on the inner wall of the first data line routing channel 3190, so that the connection end of the first data line 11 can be stationary relative to the first rotating disk 31, and cannot be pulled, thereby preventing welding failure between the first data line 11 and the first follow-up connection plate due to pulling.

As shown in fig. 2, 3 and 11, the structure and principle of the second rolling component 40 are substantially the same as those of the first rolling component 30, and the second rolling component and the first rolling component 30 are respectively disposed on two opposite sides of the fixed base 80. The second winding assembly 40 includes a second rotating disk 41, a second coil spring 42 and a second cover plate 43.

As shown in fig. 2, 3 and 11, the second rotating disk 41 includes a second disk portion 411 and a second boss portion 412. The second boss portion 412 is hollow and cylindrical, and has a hollow interior to form a second receiving groove 413 with an open end. The second disc portion 411 is provided at an edge of the second boss portion 412. The second disc portion 411 is integrally formed with the second boss portion 412. For rotation convenience, a second shaft hole 414 is formed in the center of the second boss portion 412, and the size of the second shaft hole 414 matches with the size of the second rotating shaft portion 85, and the second rotating shaft portion 85 can be sleeved with the second shaft hole 414. In order to facilitate the installation of the second cover plate 43 and the second follow-up circuit board 22, a second step is disposed at the open end of the second receiving groove 413, a second step is disposed outside the second step, and the second step are annular and concentrically disposed. In order to connect the second data line 12 to the second follow-up circuit board 22, a second inlet 417 and a second outlet 418 are provided on the second boss portion 412. The second inlet 417 and the second outlet 418 are disposed at an interval, and are respectively communicated with the second receiving groove 413. In this embodiment, the second inlet 417 and the second outlet 418 are provided on the circumferential side wall of the second boss portion 412 and extend to the second disc portion 411. In addition, a second coil spring partition 419 and a second data line partition 415 are disposed in the second receiving groove 413. The second coil spring partition 419 and the second data line partition 415 are vertically arranged arc-shaped plates respectively, and are integrally formed with the second rotating disk 41. The second coil spring partition 419 and the inner wall of the second accommodating groove 413 are spaced to form a second coil spring routing channel 416; the second data line partition 415 and the inner wall of the second receiving groove 413 are spaced to form a second data line routing channel 4190. The ends of the second coil spring spacer 419 are spaced apart from the ends of the second data line spacer 415, respectively. Both ends of the second data line spacer 415 are respectively connected to the second inlet 417 and the second outlet 418. In order to avoid the looseness of the connecting end of the second data line 12, a plurality of second anti-slip grooves 4191 are arranged on the inner wall of the second data line routing channel 4190 at vertical intervals. In this embodiment, the second anti-slip groove 4191 is disposed on an inner wall of the second accommodating groove 413 facing the second data line partition 415, and in other embodiments, the second anti-slip groove 4191 may also be disposed on an inner wall of the second data line partition 415 facing the second accommodating groove 413.

When the device is installed, as shown in fig. 3, the second rotating disc 41 is sleeved on the fixing base 80, and the second shaft hole 414 of the second rotating disc 41 corresponds to the second rotating shaft portion 85, so that the second rotating disc 41 can rotate around the second rotating shaft portion 85. The open end of the second rotating disk 41 faces the fixed base 80. The second coil spring 42 is disposed in the second accommodating groove 413, specifically, between the second data line partition 415 and the second coil spring partition 419, a fixed end of the second coil spring 42 is inserted into the insertion hole 89 of the second rotating shaft 85 to be fixedly connected with the second rotating shaft 85, and a movable end of the second coil spring 42 passes through the second coil spring routing channel 416 to be reversely bent on the second coil spring partition 419, so as to be linked with the second rotating disk 41. The second cover plate 43 is in a circular plate shape, is disposed at the open end of the second receiving groove 413, and is fixed at the second step to seal the second receiving groove 413, so that the second coil spring 42 is sealed in the second receiving groove 413. The second follower circuit board 22 is fixed at a second step of the second rotating disk 41, which is located between the second cover plate 43 and the fixed base 80. The diameter of the second follower circuit board 22 is larger than that of the second cover plate 43 so that the second follower circuit board 22 can be exposed at the second inlet 417 and the second outlet 418 to facilitate connection with the connection terminal of the second data line 12. The second data wire 12 is wound around the outside of the second boss portion 412, and is disposed coaxially with the second boss portion 412. The connection end of the second data line 12 passes through the second inlet 417 and passes through the second data line routing channel 4190 to be led out from the second outlet 418, and is soldered with the soldering point 24 of the second follow-up circuit board 22. The movable end of the second data line 12 is disposed along the second conductive line spacer 87 of the fixed base 80 and extends out of the housing 90. Thus, the second data line 12 and the second rotating disc 41 are coaxially arranged, the second rotating disc 41 is connected with the second coil spring 42 in a linkage manner, the second follow-up circuit board 22 is fixed on the second rotating disc 41 and can rotate synchronously with the second rotating disc 41, and the connecting end of the second data line 12 is electrically connected with the second follow-up circuit board 22. When the second data line 12 is pulled, the second coil spring 42 is stressed, when the second data line 12 loses tension, the second coil spring 42 is reset to drive the second rotating disk 41 to rotate so as to roll the second data line 12, and when the second rotating disk 41 rotates, the second follow-up circuit board 22 rotates along with the second rotating disk 41, so that the connection between the connection end of the second data line 12 and the second follow-up circuit board 22 is relatively static, and the problems of torsion failure and the like of the connection end of the second data line 12 cannot be caused. And the connecting end of the second data line 12 is clamped in the second data line routing channel 4190, and the inner wall of the second data line routing channel 4190 is provided with the second anti-slip groove 4191, so that the connecting end of the second data line 12 can be stationary relative to the second rotating disk 41 and cannot be pulled, and the welding failure between the second data line 12 and the second follow-up connecting plate due to pulling can be avoided.

As shown in fig. 2 and 3, the housing 90 is disposed outside the first winding member 30 and the second rotating member 40, and encloses the first winding member 30, the second rotating member 40, and the fixed base 80 therein. A first wire drawing hole 91 and a second wire drawing hole 92 are formed in the housing 90. The first wire drawing hole 91 corresponds to an end of the first wire separator 86, and the second wire drawing hole 92 corresponds to an end of the second wire separator 87.

As shown in fig. 1 and 3, when the movable end of the first data line 11 is disposed along the first conductive line spacer 86, the movable end of the first data line 11 extends out of the casing 90 through the first wire drawing hole 91. The size of the first wire drawing hole 91 is smaller than the size of the connection terminal 13 of the first data line 11, and therefore, the connection terminal 13 of the first data line 11 can be limited outside the case 90.

As shown in fig. 1 and 3, when the movable end of the second data line 12 is disposed along the second wire spacer 87, the movable end of the second data line 12 extends out of the casing 90 along the second wire drawing hole 92. The size of the second wire hole 92 is smaller than the size of the connection terminal 13 of the second data line 12, and therefore, the connection terminal 13 of the second data line 12 can be limited to the outside of the case 90.

As shown in fig. 1 and 3, the housing 90 is fixedly connected to the first and second rotating shaft portions 84 and 85 of the fixed base 80 by screws. For aesthetic enhancement, a decorative plate 93 may be provided at the position of the housing 90 where the screw is mounted, and the screw may be covered with the decorative plate 93. The decorative plate 93 is provided by referring to the known technology.

As shown in fig. 3, in order to facilitate the first data line 11 and the second data line 12 to stop automatically at the currently drawn position when being drawn, a first stop ball 101 is disposed between the first rotating disc 31 and the housing 90, and a second stop ball 102 is disposed between the second rotating disc 41 and the housing 90. The arrangement and principle of the first and second stop balls 101 and 102 are well known technology, and reference is made to the well known technology, which generally provides stop return grooves on the first and second rotating discs 31 and 41 or the housing 90, in which the first and second stop balls 101 and 102 roll respectively.

Thus, the bidirectional single-pull type retractable data line device of the embodiment is formed: the first winding component 30 and the second winding component 40 are respectively arranged at two opposite sides of the fixed base 80, and the first rotating disk 31 and the second rotating disk 41 can coaxially rotate around the fixed base 80; the first coil spring 32 is arranged in the first rotating disk 31 and is in linkage connection with the first rotating disk, and the second coil spring 42 is arranged in the second rotating disk 41 and is in linkage connection with the second rotating disk; the first follow-up circuit board 21 is fixed on the first rotating disk 31 and can synchronously rotate along with the first rotating disk 31, the second follow-up circuit board 22 is fixed on the second rotating disk 41 and can synchronously rotate along with the second rotating disk, the first follow-up circuit board 21 and the second follow-up circuit board 22 are respectively positioned on two opposite sides of the fixed base 80, conducting rings 23 which are concentrically arranged are respectively arranged on the surfaces of two opposite sides of the first follow-up circuit board 21 and the second follow-up circuit board 22, and the metal elastic sheets 71 arranged on the fixed base 80 can be respectively in contact conduction with the conducting rings 23 on two sides, so that the conducting rings 23 positioned on the same circumference are communicated; the first data line 11 is wound on the first rotating disk 31 and welded with the first follow-up circuit board 21, and the second data line 12 is wound on the second rotating disk 41 and welded with the second follow-up circuit board 22, so that the first data line 11, the first follow-up circuit board 21, the metal spring 71, the second follow-up circuit board 22 and the second data line 12 are communicated together, and data transmission and charging can be realized.

When the data line is used, a user can independently pull the movable end of the first data line 11 or the second data line 12. When the first data line 11 or the second data line 12 is pulled, the first data line 11 or the second data line 12 may stop at the currently pulled position by the first stopping ball 101 or the second stopping ball 102. When the data line needs to be wound to be stored, the data line is quickly pulled and released, and at this time, the first coil spring 32 or the second coil spring 42 is reset to drive the first rotating disk 31 or the second rotating disk 41 to rotate, so that the first data line 11 or the second data line 12 is automatically wound. In the process, the first follow-up circuit board 21 or the second follow-up circuit board 22 rotates synchronously with the first rotating disk 31 or the second rotating disk 41, and the first follow-up circuit board 21 and the second follow-up circuit board 22 can be always communicated due to the conductive ring 23; the first follow-up circuit board 21 can always keep a fixed connection state along with the rotation of the first rotating disk 31, so that the failure caused by repeated torsion between the connection end of the first data line 11 and the first rotating disk 31 is avoided; similarly, the second follow-up circuit board 22 can always maintain a fixed connection state with the rotation of the second rotating disk 41, thereby avoiding the failure of the connection end of the second data line 12 and the second rotating disk 41 due to repeated twisting.

The flexible data line device of accomodating of two-way single-pull formula of this embodiment not only can be any data line of pull alone, can keep the stability and the reliability of the circuit connection between the data line moreover to can avoid the data line to twist reverse the problem of inefficacy because of pulling repeatedly, its life and the result of use that can promote the product greatly.

Example 2

The basic structure of this embodiment is the same as that of embodiment 1, except that, as shown in fig. 4 and 5, the conductive connecting member 70 of this embodiment uses a plurality of metal beads 72, and correspondingly, the fixing base 80 of embodiment 1 is not provided with the elastic sheet holes 81, but is provided with the bead holes 890.

The number of the metal beads 72 can be set according to the requirement, and since the first follow-up circuit board 21 and the second follow-up circuit board 22 are respectively provided with 4 conductive rings 23, the number of the metal beads 72 is at least 4. In this embodiment, in order to enhance the stability of the electrical connection between the first follow-up circuit board 21 and the second follow-up circuit board 22, there are 16 metal beads 72, which are divided into four groups, and 4 metal beads 72 in each group are respectively in contact with and conducted with the conductive ring 23 on the same circumference.

Correspondingly, in order to facilitate the embedding of the metal beads 72 to achieve circuit conduction between the first follow-up circuit board 21 and the second follow-up circuit board 22, as shown in fig. 8, bead holes 890 are provided on the fixed base 80 in a number equal to that of the metal beads 72. When the metal bead 72 is embedded in the main controller, two ends of the metal bead 72 respectively protrude out of the bead holes 890, so as to be conveniently contacted and conducted with the conductive rings 23 on the same circumference on the first follow-up circuit board 21 and the second follow-up circuit board 22 at two sides of the fixed base 80.

As shown in fig. 5, by disposing a plurality of metal beads 72 on the fixed base 80, the conductive rings 23 on the first and second follower circuit boards 21 and 22 at the same circumference can be connected by contacting the metal beads 72 with the conductive rings 23, so as to connect the first and second data lines 11 and 12.

Example 3

The basic structure of this embodiment is the same as that of embodiment 1, except that the first follow-up circuit board 21 and the second follow-up circuit board 22 may be stacked in several groups as required to enhance the current carrying capability of the first data line 11 and the second data line 12. For example, three first follower circuit boards 21 and three second follower circuit boards 22 may be provided on both sides of the fixed base 80, respectively.

While the invention has been described with reference to the above embodiments, the scope of the invention is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the concept of the invention.

Claims (10)

1. The two-way single-pull type telescopic data line accommodating device is characterized by comprising a first data line (11), a second data line (12), a first winding component (30) for automatically winding the first data line (11), a second winding component (40) for automatically winding the second data line (12), a first follow-up circuit board (21), a second follow-up circuit board (22), a conductive connecting piece (70) and a fixed base (80), wherein the first winding component (30) and the second winding component (40) are respectively arranged on two opposite sides of the fixed base (80); the first data wire (11) is wound on the first winding component (30); the second data line (12) is wound on the second winding component (40); the first follow-up circuit board (21) is arranged on the first winding component (30) and is electrically connected with the first data line (11), and the first follow-up circuit board (21) can coaxially rotate around the first data line (11) arranged on the first winding component (30); the second follow-up circuit board (22) is fixed on the second winding component (40) and is electrically connected with the second data wire (12), and the second data wire (12) can coaxially rotate along with the second data wire (12) wound on the second winding component (40); the first follow-up circuit board (21) and the second follow-up circuit board (22) are provided with a plurality of circular conducting rings (23) on the surfaces of opposite sides respectively, the conducting rings (23) are concentrically arranged, the circle centers of the conducting rings are consistent with the rotation centers of the first data line (11) and the second data line (12), and the conducting connecting piece (70) is arranged on the fixed base (80) and is in contact with the conducting rings (23) of the first follow-up circuit board (21) and the second follow-up circuit board (22) respectively.

2. The bidirectional single-pull type retractable storage data line device as claimed in claim 1, wherein the conductive connecting member (70) comprises a plurality of metal spring plates (71), the fixing base (80) is provided with a plurality of spring plate holes (81), the middle portion of each metal spring plate (71) passes through each spring plate hole (81), and two ends of each metal spring plate (71) are respectively located at two sides of the fixing base (80) and are respectively in contact connection with the conductive rings (23) on the same circumference of the first follow-up circuit board (21) and the second follow-up circuit board (22).

3. The bidirectional single-pull type retractable storage data line device as claimed in claim 2, wherein each metal spring (71) is provided with at least two positioning holes (711), each metal spring (71) is provided at its end with a protrusion (712) protruding in opposite directions, the fixing base (80) is provided at its two side surfaces provided with the spring holes (81) with positioning posts (82), each metal spring (71) has its positioning hole (711) respectively fitted over the positioning posts (82) on the two side surfaces of the fixing base (80), and the protrusions (712) at the two ends of each metal spring (71) respectively protrude toward the first follow-up circuit board (21) and the second follow-up circuit board (22) to be in contact with the conductive rings (23) on the same circumference of the first follow-up circuit board (21) and the second follow-up circuit board (22).

4. The bidirectional single-pull type retractable storage data line device as claimed in claim 1, wherein the conductive connecting member (70) comprises a plurality of metal beads (72), a plurality of bead holes (890) in which the metal beads (72) are embedded are formed in the fixed base (80), and the metal beads (72) are respectively disposed in the bead holes (890) and respectively connected to the conductive rings (23) on the same circumference of the first and second follow-up circuit boards (21, 22) in a contact manner.

5. The bidirectional single-pull type retractable data line device according to claim 1, wherein:

the first winding assembly (30) comprises a first rotating disc (31), a first coil spring (32) and a first cover plate (33), a first cylindrical boss portion (312) is arranged on the first rotating disc (31), the first boss portion (312) is hollow to form a first accommodating groove (313) with one open end, the first rotating disc (31) is coaxial with the first accommodating groove (313), the first data line (11) is wound on the first boss portion (312), the first coil spring (32) is arranged in the first accommodating groove (313), the movable end of the first coil spring (32) is connected with the first rotating disc (31), the fixed end of the first coil spring (32) is connected with the fixed base (80), the first cover plate (33) is connected with the open end of the first accommodating groove (313), and the first follow-up circuit board (21) is fixedly arranged on the first rotating disc (31) and is coaxial with the first boss portion (312) The first coil spring (32) and the first follow-up circuit board (21) are respectively positioned at two opposite sides of the first cover plate (33), and the first follow-up circuit board (21) is positioned between the first rotating disk (31) and the fixed base (80);

the second winding assembly (40) comprises a second rotating disc (41), a second coil spring (42) and a second cover plate (43), a second boss part (412) which is cylindrical is arranged on the second rotating disc (41), the second boss part (412) is hollow to form a second accommodating groove (413) with one open end, the second rotating disc (41) is coaxial with the second accommodating groove (413), the second data wire (12) is wound on the second boss part (412), the second coil spring (42) is arranged in the second accommodating groove (413), the movable end of the second coil spring (42) is connected with the second rotating disc (41), the fixed end of the second coil spring (42) is connected with the fixed base (80), the second cover plate (43) is connected with the open end of the second accommodating groove (413), and the second follow-up circuit board (22) is fixedly arranged on the second rotating disc (41) and coaxial with the second boss part (412) The second coil spring (42) and the second follow-up circuit board (22) are respectively positioned at two opposite sides of the second cover plate (43), and the second follow-up circuit board (22) is positioned between the second rotating disk (41) and the fixed base (80).

6. The telescopic retractable data line device of the two-way single-pull type as claimed in claim 5, wherein a first rotation shaft portion (84) and a second rotation shaft portion (85) are vertically provided on both side surfaces of the fixing base (80), respectively, the first rotation shaft portion (84) and the second rotation shaft portion (85) being coaxial; the first rotating disc (31) is sleeved on the first rotating shaft part (84) and can rotate around the first rotating shaft part (84), and the first boss part (312) is coaxial with the first rotating shaft part (84); the second rotating disc (41) is sleeved on the second rotating shaft part (85) and can rotate around the second rotating shaft part (85), and the second boss part (412) is coaxial with the second rotating shaft part (85).

7. The bidirectional single-pull type retractable data line device according to claim 6, wherein:

a first inlet (317) and a first outlet (318) are arranged on the first boss part (312), the first inlet (317) and the first outlet (318) are respectively communicated with the first accommodating groove (313), and a connecting end of the first data line (11) enters the first accommodating groove (313) from the first inlet (317) and then is led out from the first outlet (318) to be electrically connected with the first follow-up circuit board (21);

the second boss portion (412) is provided with a second inlet (417) and a second outlet (418), the second inlet (417) and the second outlet (418) are respectively communicated with the second accommodating groove (413), and the connecting end of the second data line (12) enters the second accommodating groove (413) from the second inlet (417) and is then led out from the second outlet (418) to be electrically connected with the second follow-up circuit board (22).

8. The bidirectional single-pull type retractable data line device according to claim 7, wherein:

a first coil spring clapboard (319) and a first data line clapboard (315) are arranged in the first accommodating groove (313), the first coil spring clapboard (319) and the first data line clapboard (315) are arc-shaped plates which are vertically arranged, which are respectively spaced from the inner wall of the first receiving groove (313) to form a first coil spring routing channel (316) and a first data line routing channel (3190), ends of the first coil spacers (319) are spaced apart from ends of the first data line spacers (315), respectively, the first coil spring (32) is provided in the first coil spring spacer (319) and the first data line spacer (315), the fixed end of the first coil spring (32) is fixedly connected with the first rotating shaft part (84), the movable end of the first coil spring (32) passes through the first coil routing channel (316) and is reversely bent on the first coil spring separator plate (319); two ends of the first data line routing channel (3190) are respectively communicated with the first inlet (317) and the first outlet (318), and the connecting end of the first data line (11) is welded with the first follow-up circuit board (21) through the first inlet (317), the first data line routing channel (3190) and the first outlet (318) in sequence;

a second coil spring clapboard (419) and a second data line clapboard (415) are arranged in the second accommodating groove (413), the second coil spring clapboard (419) and the second data line clapboard (415) are arc-shaped plates which are vertically arranged respectively, which are respectively spaced from the inner wall of the second receiving groove (413) to form a second coil spring routing channel (416) and a second data line routing channel (4190), ends of the second coil spring partitions (419) are spaced apart from ends of the second data line partitions (415), respectively, the second coil spring (42) is arranged in the second coil spring partition (419) and the second data line partition (415), the fixed end of the second coil spring (42) is fixedly connected with the second rotating shaft part (85), the movable end of the second coil spring (42) passes through the second coil spring routing channel (416) and is reversely bent on the second coil spring partition plate (419); two ends of the second data line routing channel (4190) are respectively communicated with the second inlet (417) and the second outlet (418), and the connecting end of the second data line (12) is welded with the second follow-up circuit board (22) through the second inlet (417), the second data line routing channel (4190) and the second outlet (418) in sequence.

9. The bidirectional single-pull type retractable data line device according to claim 8, wherein: the inner wall of the first data line routing channel (3190) is provided with a plurality of first anti-skid grooves (3191) which are vertically arranged at intervals, and the inner wall of the second data line routing channel (4190) is provided with a plurality of second anti-skid grooves (4191) which are vertically arranged at intervals.

10. The bidirectional single-pull type retractable data line device according to claim 9, wherein: the data cable comprises a fixed base (80), wherein a first lead clapboard (86) and a second lead clapboard (87) are respectively arranged on the surfaces of two sides of the fixed base (80), the first lead clapboard (86) and the second lead clapboard (87) are vertically arranged arc-shaped plates, a shell (90) is arranged outside the fixed base (80), a first wire drawing hole (91) and a second wire drawing hole (92) are arranged on the shell (90), the end part of the first lead clapboard (86) corresponds to the first wire drawing hole (91), the end part of the second lead clapboard (87) corresponds to the second wire drawing hole (92), and the movable end of a first data cable (11) penetrates through the first wire drawing hole (91) along the first lead clapboard (86) and is arranged outside the shell (90); the movable end of the second data line (12) passes through the second wire drawing hole (92) along the second wire baffle plate (87) and is arranged outside the shell (90); a first stop ball (101) for stopping the first data line (11) at a current drawing position is provided between the first boss portion (312) and the housing (90), and a second stop ball (102) for stopping the second data line (12) at a current drawing position is provided between the second boss portion (412) and the housing (90).