TWM546039U - Flat cable structure - Google Patents

Description

Cable structure

The present invention relates to a cable structure, and more particularly to a cable structure that enhances the stability of the cable structure while reducing electromagnetic interference.

The cable is a data transmission cable used to transmit data between two electronic devices. The general cable is composed of a plurality of wires arranged in parallel, and each wire has an insulating layer for independently transmitting signals. In the design of some cable structure, there will be more than two cable lines. The traditional flexible cable structure has a plurality of metal transmission lines, each of which is covered by an insulation, and the two metal transmission lines are A transmission line group, each transmission line group being covered by a metal shielding layer.

However, in this type of cable structure, there is a gap between the insulating jacket of the transmission line and the metal shield layer, and the transmission line is easily shaken to cause poor contact or even fall off, so that the transmission quality of the cable is degraded. The general solution is to fill the gap with solder in the gap by soldering. However, this method requires soldering each gap one by one, which is labor-intensive.

In addition, the data transmission speed of electronic products is moving toward higher speed, and the high-speed signal transmission quality of transmission lines is also becoming higher and higher, in order to improve the transmission line products. Quality, it is necessary to reduce the interference between the signal lines and improve the electromagnetic interference (EMI) problem generated when the signal is transmitted.

In view of this, the purpose of the present invention is to provide a cable structure, which utilizes a conductive adhesive layer to fill the gap between the wire and the shield layer and fill the space outside the shield layer to reduce the possibility of wire sway or fall off. This not only simplifies the filling step, but also provides better shielding to improve EMI.

The present invention provides a cable structure including a plurality of signal wires, a plurality of insulating inner layers, a shielding layer, an inner conductive adhesive layer, a grounding wire, an insulating outer layer, and an outer conductive adhesive layer. A plurality of the signal wires are arranged in parallel with each other for transmitting data signals. Each of the plurality of insulations is covered with one of the signal wires. The shielding layer surrounds a plurality of the insulating inner layers to avoid electromagnetic interference effects. The inner conductive adhesive layer is filled between the shielding layer and a plurality of the insulating inner layers. The ground line is disposed on one side of the shielding layer for transmitting a ground voltage. The insulating outer layer is covered with the shielding layer and the grounding wire. The outer conductive adhesive layer is attached between the outer insulating layer and the shielding layer, and the shielding layer is electrically connected to the grounding wire.

The creation cable structure further includes a connector, a metal foil and an auxiliary conductive adhesive layer. The connector comprises a metal housing and a plurality of terminal soldering portions, and the plurality of terminal soldering portions are electrically connected to the plurality of signal wires. The metal foil is used for electrically connecting the metal casing of the connector and the outer conductive adhesive layer, so that the metal casing of the connector is electrically connected to the outer conductive adhesive layer. The auxiliary conductive adhesive layer is attached to the metal shell of the connector, and the metal foil is electrically connected to the outer conductive adhesive layer through the auxiliary conductive adhesive layer to make the metal shell, the metal foil and the auxiliary conductive adhesive layer External guidance The glue layer is grounded.

Therefore, the shielding layer can have a good shielding effect. At the same time, the embodiment further has an insulating layer for insulating the terminal soldering portion/circuit board of the connector from the auxiliary conductive adhesive layer, thereby protecting the terminal soldering portion and the electrical board.

According to the embodiment of the present invention, the cable structure is filled with an inner conductive adhesive layer between the shielding layer and the plurality of the insulating inner portions, so that the signal wires are not easily shaken, thereby improving the stability of the cable structure. The outer conductive adhesive layer is filled between the shielding layer and the insulating outer cover, so that the plurality of wires and the grounding wire coated in the insulating layer are not easy to shake or fall off, and the outer conductive adhesive layer makes the shielding layer and the grounding layer The electrical connection of the wires makes the shielding layer have a good shielding effect, so that not only the stability of the cable structure can be improved, but also the structure is used to improve EMI.

In addition, the metal casing of the connector and the metal foil are electrically connected to the outer conductive adhesive layer. In other words, the metal casing, the metal foil and the outer conductive adhesive layer are all equipotential with the grounding wire, so that the metal casing and the metal foil have a good shielding effect, so that not only the stability of the cable structure can be improved, but also This structure is also used to improve EMI.

In addition, in the prior art, solder is usually used to fill the gap between the metal wire and the shield layer by soldering, which is quite laborious and increases the production cost. However, the cable structure of the present embodiment can fill the gap with the inner conductive adhesive layer, which can save the operation trouble.

In order to make the above content of the present invention more obvious and understandable, the preferred embodiments are described below, and the detailed description is as follows:

10‧‧‧ cable structure

12‧‧‧ Signal wire

120‧‧‧Insulated inner

14‧‧‧Shield

16‧‧‧Grounding wire

18‧‧‧Insulated outer jacket

20‧‧‧Inner conductive layer

22‧‧‧External conductive adhesive layer

24‧‧‧Attach conductive adhesive layer

30‧‧‧Insulation

40‧‧‧Connector

42‧‧‧Metal housing

44‧‧‧Terminal welding department

440‧‧‧ boards

46‧‧‧metal foil

Figure 1 shows the structure of the cable.

Fig. 2 is a structural view showing the metal foil taken apart in Fig. 1.

FIG. 3 is a structural view showing a wiring structure after removing the conductive adhesive layer, the auxiliary conductive adhesive layer, and the insulating layer in FIG. 2 .

Fig. 4 is a cross-sectional view taken along line 2A-A' of Fig. 2;

The implementation, functional features, and advantages of the present embodiments will be further described with reference to the accompanying drawings.

The following description of the various embodiments is provided to illustrate the specific embodiments in which the present invention may be practiced. Directional terms mentioned in this creation, such as "upper", "lower", "before", "after", "left", "right", "top", "bottom", "horizontal", "vertical", etc. , just refer to the direction of the additional schema. Therefore, the directional terminology used is used to describe and understand the creation, and is not intended to limit the creation.

Please refer to FIG. 1 , which illustrates the cable structure 10 of the present invention. The cable structure 10 includes a connector 40, a metal foil 46, and an insulating outer jacket 18. The connector 40 is used to insert an electronic device (not shown) to cause the cable structure 10 to transmit the data signal of the electronic device. The structure of the cable structure 10 can be used to comply with the HDMI/USB3.0/USB3.1/Display Port/SATA data rate (Data Rate) greater than 1Gb/s. The metal foil 46 is wrapped between the connector 40 and the insulating outer jacket 18. The metal foil 46 may be an aluminum foil or a copper foil.

Please refer to FIG. 2, which is a structural view of the wire structure 10 shown in FIG. 1 with the metal foil 46 removed. The cable structure 10 further includes a plurality of outer conductive adhesive layers 22, an auxiliary conductive adhesive layer 24, and an insulating layer 30. External conductive adhesive layer 22, The structure and function of the auxiliary conductive adhesive layer 24 and the insulating layer 30 will be described in FIG.

Referring to FIG. 3, FIG. 3 is a structural view showing the wiring structure 10 after the conductive paste layer 22, the auxiliary conductive adhesive layer 24, and the insulating layer 30 are removed from FIG. The connector 40 includes a metal case 42, a plurality of terminal soldering portions 44, and a circuit board 440. A plurality of terminal soldering portions 44 are disposed on the circuit board 440, and each of the terminal soldering portions 44 is in contact with the signal wires 12 or the grounding wires 16. The circuit board 440 is placed inside the metal case 42, so that the metal case 42 is not only used to protect the circuit board 440, but also a metal shield to prevent electromagnetic interference. When the connector 40 is inserted into the electronic device, the data of the electronic device can be transmitted through the circuit board 440 and the plurality of signal wires 12. The insulating layer 30 is attached to the plurality of terminal soldering portions 44, the signal wires 12, the grounding wires 16, and the circuit board 440, and is disposed between the auxiliary conductive adhesive layer 24 and the signal wires 12 to avoid the signal wires 12 and the auxiliary conductive adhesive layer. 24 contacts. In the present creation, the insulating layer 30 is made of UV glue, but the UV glue is only one embodiment of the present invention, and can be attached to the plurality of terminal soldering portions 44 and the circuit board 440 of the present invention, and the two are insulated. The materials that achieve the purpose of protecting the circuit are all within the scope of this creation.

Please refer to Fig. 3 and Fig. 4 together. Fig. 4 is a cross-sectional view of Fig. 2 taken along the line A-A'.

The cable structure 10 includes a plurality of signal wires 12, a plurality of insulating inner layers 120, a shielding layer 14, an inner conductive adhesive layer 20, a grounding wire 10, an insulating outer layer 18, and an outer conductive adhesive layer 22. A plurality of signal conductors 12 are used to transmit data signals, and each of the insulation layers 120 is used to cover one of the plurality of signal conductors 12. The shielding layer 14 surrounds a plurality of insulating inner dies 120, in the present embodiment, The shield layer 14 surrounds two of the adjacent insulating inner layers 120. In other embodiments, the shield layer 14 can be used to surround more than two insulating inner layers 120. The shielding layer 14 can be a metal film or a metal mesh to avoid electromagnetic interference. The ground line 16 is disposed on one side of the shield layer 14. The insulating outer layer 18 is made of an electrically insulating material for covering the shielding layer 14 and the grounding wire 16. In other words, the insulating outer layer 18 covers the plurality of signal wires 12 and the grounding wire 16 surrounded by the shielding layer 14 to The signal conductor 12 and the ground line 16 are protected. The outer conductive adhesive layer 22 can be attached between the grounding wire 16 and the shielding layer 14 , so that the outer conductive adhesive layer 22 and the shielding layer 14 are electrically connected to the grounding wire 16 .

The metal foil 46 is in contact with the metal casing 42 of the connector 40 and the outer conductive adhesive layer 22 to electrically connect the metal casing 42 of the connector 40 and the outer conductive adhesive layer 22. As a result, the outer conductive adhesive layer 22, the metal casing 42 and the metal foil 46 are equipotential, and the outer conductive adhesive layer 22 is electrically connected to the grounding wire 16, so that the outer conductive adhesive layer 22 and the metal casing 42 of the connector are connected. And the metal foil 46 is grounded, thereby enhancing the shielding effect to improve electromagnetic interference.

Another embodiment of the present invention includes an attached conductive adhesive layer 24 attached to the metal housing 42 of the connector 40, while the metal foil 46 is attached to the auxiliary conductive adhesive layer 24 to the outer conductive adhesive layer 22. As a result, the outer conductive adhesive layer 22, the metal shell 42 of the connector 40, the metal foil 46 and the auxiliary conductive adhesive layer 24 are equipotential, and the outer conductive adhesive layer 22 is electrically connected to the grounding wire 16, so the outer conductive adhesive The layer 22, the metal casing 42 of the connector 40, the metal foil 46 and the auxiliary conductive adhesive layer 24 are all grounded.

Thus, in accordance with an embodiment of the present invention, the cable structure 10 is filled with an inner conductive adhesive layer 20 between the shield layer 14 and the plurality of insulating inner layers 120, such that a plurality of strips The signal wire 12 is not easily shaken. The outer conductive adhesive layer 22 is filled between the shielding layer 14 and the insulating outer layer 18, so that the plurality of wires 12 and the grounding wire 16 covered by the insulating layer 120 are not easily shaken or fall off. Since the outer conductive adhesive layer 22 is electrically connected to the shielding layer 14 and the grounding wire 16, the metal casing 42 and the metal foil 46 of the connector 40 are electrically connected to the outer conductive adhesive layer 22 and the auxiliary conductive adhesive layer 24, so the outer conductive adhesive Layer 22, subsidiary conductive adhesive layer 24, metal housing 42 and metal foil 46 are substantially at the same ground voltage as ground line 16. As a result, the outer conductive adhesive layer 22, the auxiliary conductive adhesive layer 24, the metal casing 42 and the metal foil 46 form another shielding layer, so that electromagnetic interference can be shielded more effectively. Therefore, the cable structure 10 of the present invention can not only improve the stability of the signal line 12, but also improve EMI. In addition, in the prior art, solder is usually filled in the void by soldering, which is quite laborious and increases the production cost. The wiring structure of the present embodiment uses the conductive adhesive layer to fill the gap, which can save the operation trouble.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. The scope of protection is subject to the definition of the scope of the patent application.

12‧‧‧ Signal wire

14‧‧‧Shield

16‧‧‧Grounding wire

18‧‧‧Insulated outer jacket

20‧‧‧Inner conductive layer

22‧‧‧External conductive adhesive layer

120‧‧‧Insulated inner

Claims (20)

A cable structure comprising: a plurality of signal wires for transmitting data signals; a plurality of insulating inner layers, each of which is covered with at least one of the signal wires; a shielding layer surrounding a plurality of the insulating inner layers For avoiding electromagnetic interference effects; and an inner conductive adhesive layer filling the shielding layer and a plurality of the insulating inner layers. The cable structure according to claim 1, further comprising: a grounding wire disposed on one side of the shielding layer for transmitting a ground voltage; an insulating outer covering covering the shielding layer and the grounding And an outer conductive adhesive layer attached between the grounding wire and the shielding layer to electrically connect the shielding layer to the grounding wire. The cable structure of claim 2, further comprising a connector, the connector comprising a metal housing and a plurality of terminal soldering portions, wherein the plurality of terminal soldering portions electrically connect the plurality of the signals wire. The cable structure according to claim 3, further comprising a metal foil, the metal shell connecting the connector and the outer conductive adhesive layer for making the metal shell of the connector and the outer conductive The glue layer is electrically connected. The cable structure according to claim 3, further comprising: an auxiliary conductive adhesive layer attached to the metal casing of the connector; and a metal foil connecting the auxiliary conductive adhesive layer and the external conductive a glue layer for electrically connecting the auxiliary conductive adhesive layer to the outer conductive adhesive layer. The cable structure of claim 5, further comprising an insulating layer between the auxiliary conductive adhesive layer and the plurality of signal wires to insulate the auxiliary conductive adhesive layer from the plurality of signal wires. The cable structure according to claim 6, wherein the insulating layer is made of UV glue. A cable structure comprising: a plurality of signal wires for transmitting data signals; a plurality of insulating inner layers, each of which is covered with at least one of the signal wires; a shielding layer surrounding a plurality of the insulating inner layers For avoiding electromagnetic interference effects; a grounding wire is disposed on one side of the shielding layer for transmitting a grounding voltage; an insulating outer covering, covering the shielding layer and the grounding wire; and an outer conductive adhesive layer, pasting Attached between the insulating outer layer and the shielding layer, the shielding layer is electrically connected to the grounding wire. The cable structure according to claim 8 , further comprising an inner conductive adhesive layer attached to the shielding layer. The cable structure of claim 8, further comprising a connector comprising a metal housing and a plurality of terminal soldering portions, wherein the plurality of terminal soldering portions are electrically connected to the plurality of signal wires. The cable structure according to claim 10, further comprising a metal foil for electrically connecting the metal shell of the connector and the outer conductive adhesive layer, so that the metal shell of the connector and the outer shell The conductive adhesive layer is electrically connected. The cable structure according to claim 10, further comprising: an auxiliary conductive adhesive layer attached to the metal casing of the connector; and a metal foil for electrically connecting the auxiliary conductive adhesive layer with The outer conductive adhesive layer electrically connects the metal shell of the connector to the outer conductive adhesive layer. The cable structure of claim 12, further comprising an insulating layer between the auxiliary conductive adhesive layer and the plurality of signal wires to insulate the auxiliary conductive adhesive layer from the plurality of signal wires. The cable structure according to claim 13, wherein the insulating layer is made of UV glue. A cable structure comprising: a plurality of signal wires for transmitting data signals; a plurality of insulating inner layers, each of which is covered with at least one of the signal wires; a shielding layer surrounding a plurality of the insulating inner layers Used to avoid the electromagnetic interference effect; a grounding wire is disposed on one side of the shielding layer for transmitting the grounding voltage; an insulating outer covering, covering the shielding layer and the grounding wire; an outer conductive adhesive layer, attached The shielding layer is electrically connected to the grounding line between the insulating outer layer and the shielding layer; a connector comprises a metal shell and a plurality of terminal soldering portions, and the plurality of terminal soldering portions are electrically connected to each other And the metal foil is electrically connected to the metal shell of the connector and the outer conductive adhesive layer, so that the metal shell of the connector is electrically connected to the outer conductive adhesive layer. The cable structure according to claim 15, further comprising an inner conductive adhesive layer attached to the shielding layer. The cable structure of claim 15 further comprising an auxiliary conductive adhesive layer attached to the metal shell of the connector to electrically connect the auxiliary conductive adhesive layer to the outer conductive adhesive layer. The cable structure of claim 17, wherein the insulating layer is disposed between the auxiliary conductive layer and the plurality of signal wires to insulate the auxiliary conductive layer from the plurality of signal wires. The cable structure according to claim 18, wherein the insulating layer is made of UV glue. The cable structure of claim 15, further comprising a circuit board connected to the plurality of terminal soldering portions for processing a plurality of data signals transmitted by the signal wires.