CN217281506U - Portable data line - Google Patents

Abstract

The utility model provides a portable data cable, comprising a casing and a data cable, wherein a receiving cavity is formed in the casing, a wire winding body is rotated in the receiving cavity, and two wire passage holes are opened on the casing; The wire includes a first wire body and a second wire body. One end of the first wire body has a first joint located outside the casing, and the other end is connected with a first electrical connection part; one end of the second wire body is connected with a second electrical connection part, and the other end is connected with a second electrical connection part. There are several second joints, the second electrical connection part is fixed on the reel and can be wound on the reel; and the first electrical connection part and the second electrical connection part can maintain electrical contact when the reel rotates . The portable data cable of the present invention can facilitate the carrying of the data cable by winding the second wire body on the data cable on the wire winding body, and maintain electrical contact through the first electrical connection portion and the second electrical connection portion , the connection between the first wire body and the second wire body can be ensured, so as to ensure the use effect of the data wire.

Description

Portable Data Cable

technical field

The utility model relates to the technical field of electronic data lines, in particular to a portable data line.

Background technique

With the popularity of smart phones and other electronic digital products, data cables have been widely used in various electronic digital products as electronic accessories that can charge and transmit data to electronic digital products. At present, the data cables on the market are generally long wires, which are either placed at home or in the office. However, people need to replenish power frequently and exchange data with computers every day. The existing long linear data cables are easily entangled with other items or self-entangled in pockets or bags. , portable use and other requirements.

Utility model content

In view of this, the present invention aims to provide a portable data cable, which is convenient for carrying and using the data cable.

In order to achieve the above object, the technical scheme of the present utility model is achieved in this way:

A portable data cable, comprising a housing and a data cable, wherein:

A accommodating cavity is formed in the casing, a wire winding body is rotated in the accommodating cavity, and two wire passing holes are opened on the casing which are communicated with the accommodating cavity;

The data line includes a first line body and a second line body, and the first line body and the second line body are respectively disposed through the corresponding wire holes;

One end of the first wire body has a first connector located outside the casing, and the other end is connected with a first electrical connection part located in the receiving cavity;

One end of the second wire body is connected with a second electrical connection portion, and the other end has a plurality of second connectors located outside the casing. The second electrical connection portion is fixed on the wire winding body, and the second wire The body can be wound on the wire winding body; and when the wire winding body is driven by an external force to rotate, the first electrical connection portion and the second electrical connection portion can maintain electrical contact.

Further, both ends of the wire winding body are respectively provided with annular projections, and the second wire body is wound on the wire winding body between the two annular projections.

Further, the second electrical connection part includes two conductive rings arranged on one of the annular protrusions, the two conductive rings are arranged around the circumference of the coil body, and the two conductive rings are arranged around the circumference of the coil body. are insulated and separated from each other in the radial direction of the annular protrusion;

The first electrical connection part includes two conductors arranged on the casing, the two conductors are insulated and separated from each other, and the two conductors are respectively connected with the two conductive rings in one-to-one correspondence; When the two conductive rings rotate with the winding body, the two conductive rings are respectively kept in electrical contact with the corresponding conductors.

Further, each of the electrical conductors is provided with at least one conductive rolling element, and the electrical conductor is in electrical contact with the corresponding conductive ring via the conductive rolling element.

Further, the housing is provided with an installation shaft, the coil body is sleeved on the installation shaft, and the two conductors are respectively fixed on the installation shaft.

Further, a coil spring is wound on the coil body, two ends of the coil spring are respectively connected to the casing and the coil body, and the coil spring can be unwound on the coil body The second wire body has elastic energy storage, and can drive the wire winding body to reset by releasing the elastic energy storage.

Further, an elastic pressing unit is provided on the casing where the second wire body passes through the wire-passing hole;

The elastic pressing unit can elastically abut the second wire body on the inner wall of the wire passage hole, so as to adjust the length of the second wire body extending out of the casing.

Further, a drive motor is provided on the housing, and a power output end of the drive motor is connected to one end of the wire winding body to provide the external force to the wire winding body.

Further, the second wire body is provided with a blocking portion located outside the casing, and the second wire body can block each of the second joints due to the abutment between the blocking portion and the outer wall of the casing outside the casing.

Further, magnetic rings are respectively provided on the first joint and/or the second joint.

Compared with the prior art, the utility model has the following advantages:

(1) In the portable data cable of the present invention, by winding the second wire body on the data wire on the wire winding body, the carrying of the data cable can be facilitated, and the adjustment of the overall length of the data cable can be realized. The first electrical connection part and the second electrical connection part are kept in electrical contact, which can ensure the connection between the first wire body and the second wire body, and is beneficial to ensure the use effect of the data line.

(2) The two ends of the wire winding body are respectively provided with annular protrusions, which can improve the winding effect of the second wire body.

(3) The first connection part and the second connection part are arranged so that the two conductors are respectively in electrical contact with the conductive ring, which has a simple structure and is convenient for design and arrangement.

(4) By arranging at least one conductive rolling element on the conductor, the friction loss between the conductor and the conductor ring can be reduced.

(5) By arranging the coil spring on the coil body, it is beneficial to realize the reset of the coil body, and to rewind the second coil body, the structure is simple, and the design and arrangement are convenient.

(6) An elastic pressing unit is provided on the casing where the second wire body passes through the wire hole, so as to maintain the length of the second wire body extending out of the casing.

(7) By arranging the drive motor on the casing to provide the power to rotate the wire winding body, the product is mature, easy to arrange and implement, and the use effect is good.

(8) The first connector and the second connector are respectively provided with magnetic rings, so that the first connector and the second connector are respectively connected to the external plug connector by adsorption.

Description of drawings

The accompanying drawings that constitute a part of the present invention are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic structural diagram of a portable data cable according to an embodiment of the present invention;

2 is a schematic structural diagram of the interior of the casing according to the embodiment of the present invention;

Fig. 3 is the sectional view of A-A direction in Fig. 2;

4 is a schematic diagram of the assembly relationship between the reel and the data cable according to the embodiment of the present utility model;

FIG. 5 is a schematic structural diagram of the wire winding body according to the embodiment of the present utility model;

6 is a schematic diagram of the matching relationship between the second wire body and the conductive ring according to the embodiment of the present invention;

7 is a schematic diagram of the matching relationship between the second wire body and the conductive ring according to the embodiment of the present invention;

Fig. 8 is a partial enlarged view in Fig. 7;

9 is a schematic diagram of the cooperation relationship between the second wire body and the elastic pressing unit according to the embodiment of the present invention;

10 is a schematic structural diagram of the elastic pressing unit according to the embodiment of the present invention;

11 is a schematic structural diagram of a push block from a viewing angle according to an embodiment of the present invention;

12 is a schematic structural diagram of a push block from another viewing angle according to an embodiment of the present invention;

13 is a schematic structural diagram of an L-shaped rod according to an embodiment of the present invention.

Description of reference numbers:

1. Data line; 10. First line body; 101, First connector; 102, Conductor; 1021, Positive conductor; 1022, Negative conductor; 1023, Conductive rolling body; 11, Second line body; Two connectors; 112, conductive ring; 1121, positive conductive ring; 1122, negative conductive ring; 113, blocking part;

2. Housing; 21. Receiving cavity; 22. Cable hole; 23. Mounting shaft;

3. Reel body; 31. Ring-shaped protrusion; 32. Coil spring;

4. Elastic pressing unit; 41, push block; 411, second slope; 42, tension spring; 43, L-shaped rod; 431, first slope; 44, spring; 45, baffle.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inside", "back", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

This embodiment relates to a portable data cable, which includes a casing 2 and a data cable 1 in overall structure. The housing 2 is formed with a accommodating cavity 21 , the accommodating cavity 21 is rotatably provided with a wire winding body 3 , and the housing 2 is provided with two wire-passing holes 22 communicating with the accommodating cavity 21 .

The data line 1 includes a first wire body 10 and a second wire body 11 , and the first wire body 10 and the second wire body 11 are respectively disposed through corresponding wire-passing holes 22 . One end of the first wire body 10 has a first connector 101 located outside the casing 2 , and the other end is connected to a first electrical connection part located in the receiving cavity 21 .

One end of the second wire body 11 is connected with a second electrical connection portion, and the other end has a plurality of second connectors 111 located outside the casing 2 . The second electrical connection portion is fixed on the wire winding body 3 , and the second wire body 11 can be retracted. It is wound on the wire reel 3; and when the wire reel 3 is driven by an external force to rotate, the first electrical connection portion and the second electrical connection portion can maintain electrical contact.

In the portable data cable of this embodiment, the winding body 3 is provided, and the second wire body 11 on the data cable 1 can be wound on the winding body 3, so that the overall length of the data cable 1 can be changed, thereby facilitating the data cable 1 carry.

Based on the above overall structure, an exemplary structure of a portable data cable in this embodiment is shown in FIG. 1 . As mentioned above, the data line 1 in this embodiment includes a first line body 10 and a second line body 11 , the first line body 10 includes a first connector 101 and a first electrical connection portion, and the second line body 11 includes The second connector 111 and the second electrical connection part, the first electrical connection part and the second electrical connection part are provided in the housing 2 , the first connector 101 of the first wire body 10 is connected to the power output end of the external connector, the first The second connector 111 of the two-wire body 11 is connected to the power input end of the external connector. Wherein, one end of the second line body 11 can be provided with a variety of different types of connectors at the same time, so as to improve the versatility of the data line 1 .

In this embodiment, as shown in FIG. 2 and FIG. 3 , the structure of the casing 2 is a rectangular frame body with a hollow interior, and the inner space thereof forms a receiving cavity 21 , and the shape of the receiving cavity 21 follows the shape of the casing 2 and is set as Rectangular, used to accommodate the coil body 3 . The shape of the housing 2 is preferably a rectangle, which has a simple structure and is easy to be processed and formed. Other shapes such as a circle can also be provided, which is not limited here. The accommodating cavity 21 is set in a rectangular shape following the shape of the casing 2 , which can improve the utilization rate of the space of the casing 2 . Of course, the shape of the accommodating cavity 21 is not further limited here, and the accommodating cavity 21 may also be set to be circular or other irregular shapes.

In this embodiment, according to a conventional arrangement method, the two wire-passing holes 22 of the casing 2 are respectively opened on two opposite sides of the casing 2, and the corresponding first wire body 10 and the second wire body 11 in the data line 1 Extend in two opposite directions. Two wire-passing holes 22 can also be arranged on the same side of the housing 2, or on two adjacent sides, so as to change the protruding direction of the ports of the first wire body 10 and the second wire body 11 in the data line 1, so that the data line 1 Adapt to different scenarios.

In this embodiment, in order to realize the rotation of the above-mentioned wire winding body 3 relative to the casing 2 , the second wire body 11 can be used for wire take-up and wire defense. As a preferred embodiment, as shown in FIG. 3 , FIG. 4 and FIG. 5 , a coil spring 32 can be wound on the coil body 3 , and both ends of the coil spring 32 are respectively connected to the casing 2 and the coil body. 3. In addition, the coil spring 32 can elastically store energy when the reel 3 unwinds the second coil 11 , and can drive the reel 3 to return by releasing the elastic energy.

In addition to using the above-mentioned coil spring 32 to drive the coil body 3 to rotate, a drive motor can also be provided on the housing 2 . At this time, the power output end of the driving motor is connected to one end of the wire winding body 3 to provide driving force to the wire winding body 3 . At this time, the wire take-up and wire defense of the second wire body 11 can be realized by adjusting the rotation direction of the driving motor.

In addition, in order to facilitate the connection between the housing 2 and the reel 3, a mounting shaft 23 is provided in the housing 2. As shown in FIG. 2, FIG. 3 and FIG. 4, the mounting shaft 23 is fixed. It is arranged at the inner middle position of the accommodating cavity 21 , and the reel 3 is sleeved on the lower part of the installation shaft 23 . The two conductors 102 provided in the first wire body 10 of the above-mentioned data line 1 are fixedly connected to the upper portion of the mounting shaft 23 .

In order to improve the winding effect, still referring to the structure shown in FIG. 5 , the two ends of the winding body 3 are respectively provided with annular protrusions 31 , and the second wire body 11 is wound on the coil between the two annular protrusions 31 . on line 3. In this way, a better winding effect can be achieved during the winding process, and the second wire body 11 in the data cable 1 can be prevented from being separated from the winding body 3 , thereby affecting the use of the data cable 1 as a whole.

In this embodiment, the second electrical connection portion of the second wire body 11 in the data line 1 includes two conductive rings 112 disposed on an annular protrusion 31 thereof. As shown in FIG. 5 , on the annular protrusion 31 provided on the upper end of the coil body 3 , two conductive rings 112 are arranged around the circumference of the coil body 3 , and the two conductive rings 112 are located on the annular protrusion 31 . They are insulated from each other in the radial direction. As a preferred embodiment, two conductors 102 are connected to the end of the second wire body 11 close to the annular protrusion 31 , please refer to the first wire body 10 shown in FIGS. 6 and 7 below. The structure of the conductor 102 is provided on it. The two conductors 102 are respectively a positive conductor 1021 and a negative conductor 1022. The positive conductor 1021 and the negative conductor 1022 are respectively connected to the bottoms of the two conductive rings 112. The positive electrode corresponds to the outer positive conductive ring 1121, and the negative electrode corresponds to the inner one. Negative conductive ring 1122.

It can be understood that the end of the second wire body 11 connected to the conductive ring 112 can be directly divided into a positive wire and a negative wire, and on the top annular protrusion 31 of the wire winding body 3, located on the positive conductive ring 1121 and the negative wire. Between the conductive rings 1122, there are accommodating grooves for accommodating the positive wire and the negative wire. The positive wire is directly connected to the outer positive conductive ring 1121 through the accommodating groove, and the negative wire is directly connected to the inner negative conductive ring 1122 through the accommodating groove. At this time, the end of the second wire body 11 rotates with the wire winding body 3 along with the conductive ring 112 , and there is no relative rotation between the two.

The first electrical connection portion of the first wire body 10 includes two conductors 102 disposed on the housing 2 , the two conductors 102 are insulated and separated from each other, and the two conductors 102 are one-to-one with the two conductive rings 112 . Correspondingly connected, when the two conductive rings 112 rotate with the winding body 3 , the two conductive rings 112 maintain electrical connection with the corresponding conductors 102 respectively. Specifically, as shown in FIG. 6 and FIG. 7 , the end portion of the first wire body 10 is provided with two conductors 102 , and the two conductors 102 are respectively a positive conductor 1021 and a negative conductor 1022 , and the positive conductor 1021 At the same time, one end of the negative conductor 1022 is in contact with the top of the inner negative conductive ring 1122. When the conductive ring 112 rotates with the coil body 3, the positive conductor in the first coil body 10 is maintained. The electrical conductors 1021 and the negative electrical conductors 1022 are always in electrical contact between the positive conductive ring 1121 and the negative conductive ring 1122.

To avoid wear caused by long-term friction between the conductors 102 and the conductor rings 112 , each conductor 102 is provided with at least one conductor rolling element 1023 , and the conductors 102 are in electrical contact with the corresponding conductor rings 112 via the conductor rollers 1023 . In this embodiment, as shown in FIG. 8 , on the conductors 102 of the first wire body 10 and the second wire body 11 , a ball is provided at the ends of the positive electrode and the negative electrode, and the ball contacts the top of the conductive ring 112 through the ball. , reducing the friction between the balls and the conductive ring 112 , and improving the service life of the conductive ring 112 and the conductor 102 .

In this embodiment, as shown in FIG. 9 , in order to adjust the length of the casing 2 extending from the second wire body 11 , the length of the data wire 1 can be adjusted according to different needs of people, and the second wire body 11 passes through the wire hole. The housing 2 at 22 is provided with an elastic pressing unit 4, which can elastically abut the second wire body 11 on the inner wall of the wire hole 22, and protrude the housing 2 by pressing the second wire body 11 out of the housing 2. The length can be adjusted to meet different usage needs.

Specifically, as shown in FIG. 10 , as a preferred embodiment, the elastic pressing unit 4 includes an abutting member connected to the housing 2 via an elastic member, and a driving force for driving the abutting member to press against the second wire body 11 . pieces. The second wire body 11 is elastically pressed by the pressing member, so that damage to the second wire body 11 is avoided, and the second wire body 11 of the projecting case 2 can be maintained at a certain length.

Preferably, as shown in FIG. 11 and FIG. 12 , the pressing member in this embodiment is specifically set as the push block 41 , and the elastic member is set as the tension spring 42 , one end of the tension spring 42 is connected to the housing 2 , and the tension The other end of the spring 42 is connected to the push block 41. Under the action of the tension spring 42, when the push block 41 is pulled tight and approaches the housing 2, the end of the push block 41 opposite to the abutting end can abut against the abutting end. on the shell 2.

At the same time, a through groove is formed on the casing 2 in a vertical direction corresponding to the end of the push block 41 close to the casing 2 , and the driving member is slidably arranged in the through groove. Referring to FIG. 13 , the specific driving member is an L-shaped rod 43 , and the bottom end of the L-shaped rod 43 abuts against the pushing block 41 and drives the pushing block 41 against the second wire body 11 . In order to facilitate the reset of the L-shaped rod 43 when the second wire body 11 is released, a spring 44 is provided between the other end of the L-shaped rod 43 and the housing 2 , which has a simple structure and is convenient for design and arrangement.

In terms of detailed structure, as shown in FIGS. 11 and 13 , a first inclined plane 431 is formed at the driving end of the L-shaped rod 43 . Corresponding to the first inclined plane 431 , a first inclined plane 431 is formed on the push block 41 . Two slopes 411. Preferably, the first inclined surface 431 and the second inclined surface 411 are attached to each other, so as to improve the stability of the L-shaped rod 43 and the pushing block 41 in use. When the L-shaped rod 43 slides in the direction of the pushing block 41 , the second inclined surface 411 is pushed by the first inclined surface 431 , so that the pushing block 41 slides out of the housing 2 , and the tension spring 42 is stretched to store energy. , the pushing block 41 presses against the second wire body 11 , so as to fix the length of the second wire body 11 extending out of the housing 2 .

When the external force pulls the second wire body 11 , driven by the release of the stored energy from the tension spring 42 , the pushing block 41 will slide away from the second wire body 11 , and the second inclined surface 411 and the first inclined surface 431 cooperate with each other. , and reset the push block 41 and the L-shaped rod 43 , at this time, the second wire body 11 can freely enter and exit the corresponding wire hole 22 .

In addition, when the push block 41 is pressed against the second wire body 11, in order to ensure the timeliness of pressing, a baffle plate 45 is fixed on the housing 2 near the other end of the L-shaped rod 43. When the pusher block 41 is pressed against the second wire body 11 by the longitudinal direction of the rod, the L-shaped rod can also move in the height direction of the housing 2, so that the top of the L-shaped rod 43 can be pressed against the interior of the baffle 45. , to limit the rebound of the L-shaped rod 43 under the action of the spring 44 .

Of course, there are many kinds of setting forms of the elastic pressing unit 4, and the setting form of this embodiment is only one of the setting forms. The structure of the elastic pressing unit 4 is not specifically limited here, and other forms that can play the role of Structure with elastic compression action.

In order to ensure the normal use of the data cable 1 , the shortest length of the second wire body 11 is limited to a certain extent, so as to avoid excessive winding of the length of the second wire body 11 . In this embodiment, the second wire body 11 is provided with a blocking portion 113 located outside the casing 2 , and the second wire body 11 can block each second connector 111 in the casing due to the abutment of the blocking portion 113 and the outer wall of the casing 2 . 2 outside the body. Specifically, as shown in FIG. 1 , the blocking portion 113 is a blocking block disposed on the second wire body 11 near the second connector 111 , and the size of the blocking block is not smaller than the size of the wire hole 22 opened on the housing 2 , Therefore, the blocking block can abut on the casing 2 to restrict the winding of the second wire body 11 . In this embodiment, the structure of the blocking portion 113 is set as a blocking block, which has a simple structure and is convenient for design, processing and molding. Of course, other blocking structures can also be used, which are not limited here.

In this embodiment, in order to improve the use effect of the data line 1, magnetic rings (not shown in the figure) are respectively provided at the ends of the first connector 101 and the second connector 111 of the data line 1, which can be connected to the outside in the form of magnetic attraction. Plug connector connection, improve the convenience of connection. It can be understood that, a magnetic ring can also be provided only on the first connector 101 of the data cable 1, or only a magnetic ring can be provided on the second connector 111 of the data cable 1, which is not specifically limited herein. The structure of the magnetic ring may refer to the structure in the prior art, and will not be described in detail here.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the scope of protection of the present invention.

Claims (10)

1. A portable data line, characterized in that: it comprises a housing (2) and a data line (1), wherein: A accommodating cavity (21) is formed in the casing (2), and a reel (3) is rotated in the accommodating cavity (21). two wire holes (22) connected to the cavity (21); The data line (1) includes a first line body (10) and a second line body (11), and the first line body (10) and the second line body (11) respectively pass through the corresponding wires. Line hole (22) setting; One end of the first wire body (10) is provided with a first connector (101) located outside the casing (2), and the other end is connected with a first electrical connection part located in the receiving cavity (21); One end of the second wire body (11) is connected with a second electrical connection portion, and the other end is provided with a plurality of second connectors (111) located outside the housing (2), and the second electrical connection portion is fixed on the On the reel (3), the second reel (11) can be wound on the reel (3); and when the reel (3) is driven by an external force to rotate, the reel (3) The first electrical connection portion and the second electrical connection portion can maintain electrical contact. 2. The portable data cable according to claim 1, wherein: Both ends of the coil body (3) are respectively provided with annular protrusions (31), and the second coil body (11) is wound on the coil between the two annular protrusions (31). on the line body (3). 3. The portable data cable according to claim 2, wherein: The second electrical connection part comprises two conductive rings (112) arranged on one of the annular protrusions (31), and the two conductive rings (112) surround the circumference of the coil body (3). The two conductive rings (112) are insulated and separated from each other in the radial direction of the annular protrusion (31); The first electrical connection part comprises two conductors (102) arranged on the casing (2), the two conductors (102) are insulated and separated from each other, and the two conductors (102) They are respectively connected with the two conductive rings (112) in one-to-one correspondence; when the two conductive rings (112) rotate with the coil body (3), the two conductive rings (112) are respectively connected with the corresponding conductive rings (112). The body (102) remains in electrical contact. 4. The portable data cable according to claim 3, wherein: Each of the electrical conductors (102) is provided with at least one conductive rolling element (1023), and the electrical conductor (102) is in electrical contact with the corresponding conductive ring (112) via the conductive rolling element (1023). 5. The portable data cable according to claim 3, wherein: The housing (2) is provided with an installation shaft (23), the wire winding body (3) is sleeved on the installation shaft (23), and the two conductors (102) are respectively fixed to the said installation shaft (23). Install on the shaft (23). 6. The portable data cable according to claim 1, wherein: A coil spring (32) is wound on the coil body (3), two ends of the coil spring (32) are respectively connected to the casing (2) and the coil body (3), and The coil spring (32) can elastically store energy when the coil body (3) unwinds the second coil body (11), and can drive the coil body (3) to reset by releasing the elastic energy. 7. The portable data cable according to claim 6, wherein: An elastic pressing unit (4) is provided on the casing (2) where the second wire body (11) passes through the wire passage hole (22); The elastic pressing unit (4) can elastically abut the second wire body (11) on the inner wall of the wire passage hole (22), so as to form the second wire body (11) to protrude from the casing Body (2) length adjustment. 8. The portable data cable according to claim 1, wherein: The casing (2) is provided with a driving motor, and the power output end of the driving motor is connected with one end of the wire winding body (3) to provide the external force to the wire winding body (3). 9. The portable data cable according to any one of claims 1 to 7, wherein: The second wire body (11) is provided with a blocking part (113) located outside the casing (2), and the second wire body (11) can be connected to the casing (113) by the blocking part (113). 2) The abutment of the outer wall makes each of the second joints (111) block outside the casing (2). 10. The portable data cable according to any one of claims 1 to 7, wherein: Magnetic rings are respectively provided on the first joint (101) and/or the second joint (111).

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