CN201749711U - Flexible cable - Google Patents

Abstract

The utility model relates to a flexible flat cable, which comprises a first insulating layer, a conducting wire layer, a second insulating layer, a metal layer and at least one grounding conducting piece. The wire layer is formed by arranging a plurality of metal wires at intervals and is arranged on the first insulating layer, wherein the plurality of metal wires of the wire layer comprise at least one grounding wire; the second insulating layer is arranged on the lead layer and exposes two ends of the lead layer; the metal layer is arranged on the second insulating layer; the grounding conducting piece is electrically connected with the grounding wire exposed outside and the metal layer.

Description

Flexible cable

technical field

The utility model relates to a flexible cable, in particular to a flexible cable with a simple structure and a grounding structure.

Background technique

With the rapid development of electronic technology, various electronic products have been increasingly used in our work and life. In various electronic products, flexible cables are widely used as a way of signal transmission.

In practical applications, the flexible cable has a plurality of metal wires arranged at intervals, at least one of which is a ground wire, and the ground wire of the flexible cable is connected to an external grounding device. In the prior art, the coated metal wire needs to be Openings are provided on the insulating layer to expose the ground wires. This structure not only increases the complexity of the process, but also increases the manufacturing cost.

Utility model content

One of the purposes of this utility model is to provide a flexible cable, which uses a grounding conductor to electrically connect the exposed ground wire and the metal layer on the second insulating layer, so that the flexible cable has a structure with a grounding function .

The flexible cable of the utility model includes a first insulating layer, a wire layer, a second insulating layer, a metal layer and at least one grounding guide. The wire layer is arranged at intervals by a plurality of metal wires and arranged on the first insulating layer, wherein the plurality of metal wires include at least one ground wire; the second insulating layer is arranged on the wire layer and exposes both ends of the wire layer; the metal layer is set on the second insulating layer; and the grounding lead is electrically connected to the exposed grounding wire and the metal layer.

The beneficial technical effects of the utility model are: the flexible cable of the utility model uses the grounding guide to electrically connect the grounding wire of the exposed wire layer and the metal layer arranged on the second insulating layer, and the process is simple and fast , can reduce the production cost.

Description of drawings

In the following, specific embodiments will be described in detail in conjunction with the accompanying drawings, so that it will be easier to understand the purpose, technical content, features and effects of the present utility model. It should be noted that, in the following embodiments and accompanying drawings, elements not directly related to the present utility model have been omitted and not shown; and the dimensional relationship among the elements in the accompanying drawings is only for easy understanding, and is not intended to limit the actual ratio; of which:

FIG. 1 is a schematic structural view of a flexible cable according to an embodiment of the present invention.

Fig. 2 is a top view of a flexible cable according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a flexible cable according to another embodiment of the present invention.

Fig. 4 is a schematic structural view of a flexible cable according to another embodiment of the present invention.

Fig. 5 is a schematic structural view of a flexible cable according to another embodiment of the present invention.

Fig. 6 is a schematic structural view of a flexible cable according to another embodiment of the present invention.

Detailed ways

The utility model is described in detail as follows, and the preferred embodiments are only for illustration rather than limiting the utility model.

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic structural diagram of a flexible cable 1 according to an embodiment of the present invention; FIG. 2 is a top view of the flexible cable 1 according to an embodiment of the present invention. The flexible cable 1 includes a first insulating layer 10 , a wire layer 11 , a second insulating layer 12 , a metal layer 13 and at least one grounding conductor 14 . The wire layer 11 is arranged at intervals and disposed on the first insulating layer 10 by a plurality of metal wires, wherein the plurality of metal wires include at least one ground wire, for example, the wire layer 11 of the flexible cable 1 includes a ground wire 111a , 111b, 111c. The second insulating layer 12 is disposed on the wire layer 11 and exposes two ends of the wire layer 11 . The metal layer 13 is disposed on the second insulating layer 12 . The ground lead 14 electrically connects the exposed ground wires 111 a , 111 b , 111 c and the metal layer 13 .

Fig. 3 is another embodiment of the flexible cable of the present utility model, which also includes a first protective part 15 and a second protective part 16, wherein the first protective part 15 is arranged on the metal layer 13, and the second The protection piece 16 covers part of the grounding conductor 14 . In the embodiment shown in FIG. 3 , the second protection element 16 also covers part of the first protection element 15 , but it is not limited thereto. The first protection member 15 and the second protection member 16 are used to block the pollution of external dust particles and prevent part of the grounding guide 14 and/or the metal layer 13 from being scratched or worn. The first protection member 15 and the second protection member 16 As an insulating material, it may include, but is not limited to, polyethylene terephthalate (PET). It can be understood that, the first protection part 15 and the second protection part 16 can also be integrally formed components. In another embodiment of the present utility model, a reinforcing plate (not shown) is provided on at least one end of the lower surface of the first insulating layer 10 to buffer the impact force of the flexible cable, so as to reduce this chance of the end breaking. For example, the material of the reinforcement board can be polyester resin.

It should be noted that, taking the flexible cable 1 of the embodiment of the present invention as an example, part of the grounding guide 14 is arranged on the metal layer 13, and the metal layer 13 covers the second insulating layer 12, but it is not limited to this . FIG. 4 shows a flexible cable according to another embodiment of the present invention. The metal layer 13 may partially cover the second insulating layer 12 , and part of the grounding conductor 14 is disposed between the metal layer 13 and the second insulating layer 12 . In addition, the grounding conductor 14 is made of conductive material and may include, but is not limited to, conductive silver paste or conductive carbon paste, and may be disposed on the wire layer 11 and the second insulating layer 12 by coating, screen printing, and the like. The material of the first insulating layer 10 and the second insulating layer 12 includes but not limited to polyethylene terephthalate (PET), and the metal layer 13 is a conductive metal material, which may include but not limited to gold, silver or aluminum.

Fig. 5 is a flexible cable according to another embodiment of the present invention, which also includes a metal shielding layer 17 and a third insulating layer 18, wherein the metal shielding layer 17 is arranged on the lower surface of the first insulating layer 10, and the second The third insulating layer 18 is disposed on the lower surface of the metal shielding layer 17 , and the material of the third insulating layer 18 includes but is not limited to polyethylene terephthalate (PET). The material of the metal shielding layer 17 includes conductive silver paste or conductive carbon paste to reduce electromagnetic interference and noise interference, so that the characteristic impedance range of the flexible cable of the present invention is between 90Ω and 110Ω, which can meet the requirements of low voltage difference The specification requirements for the use of Low Voltage Differential Signal (LVDS) transmission lines.

Fig. 6 is a flexible cable according to another embodiment of the present invention, in which the second protective member 16 covering part of the grounding guide 14 can be a set, which is sleeved on at least one end of the first insulating layer 10 and covers part of it. Grounding guide 14, part of the first protection member 15, part of the metal shielding layer 17, part of the first insulating layer 10, part of the wire layer 11, part of the second insulating layer 12 and part of the metal layer 13, and expose the two ends of the wire layer 11 , not only can protect the grounding guide 14, but also increase the strength of this end to avoid fracture. In addition, in the above-mentioned embodiments, the grounding guides are disposed at both ends of the grounding wire of the exposed wire layer, and the grounding guide may only be provided at one end of the grounding wire according to actual needs. It can be known from the above embodiments that any structure in which the grounding wire of the exposed wire layer and the metal layer disposed on the second insulating layer is electrically connected by the grounding conductor is the spirit of the present invention.

Based on the above, the flexible cable of the present invention uses a grounding conductor to electrically connect the grounding wire of the exposed wire layer and the metal layer on the second insulating layer. The process is simple and fast, and can reduce the production cost. cost.

The above-described embodiments only illustrate the technical ideas and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and should not limit the patent of the utility model with it range, that is, all equivalent changes or modifications made according to the spirit disclosed in the utility model should still be covered within the patent scope of the utility model.

Claims (10)

1. a flexible flat cable is characterized in that, comprises:

One first insulating barrier;

One conductor layer is arranged and is arranged on this first insulating barrier by many strip metals conductor spacing, and wherein those plain conductors comprise at least one earth connection;

One second insulating barrier is arranged on this conductor layer and these conductor layer two ends is exposed;

One metal level is arranged on this second insulating barrier; And

At least one ground connection guiding element is the conductivity material, electrically connects to be exposed to outer this earth connection and this metal level.

2. flexible flat cable according to claim 1 is characterized in that, this ground connection guiding element of part is arranged between this metal level and this second insulating barrier.

3. flexible flat cable according to claim 1 is characterized in that, this ground connection guiding element of part is arranged on this metal level.

4. flexible flat cable according to claim 1 is characterized in that, this metal level covers this second insulating barrier.

5. flexible flat cable according to claim 1 is characterized in that, this metal level partly covers this second insulating barrier.

6. flexible flat cable according to claim 1 is characterized in that, also comprises at least one end that a stiffening plate is arranged at the lower surface of this first insulating barrier.

7. flexible flat cable according to claim 1 is characterized in that, also comprises a metal shielding layer and one the 3rd insulating barrier, and wherein this metal shielding layer is arranged at the lower surface of this first insulating barrier, and the 3rd insulating barrier is arranged at the lower surface of this metal shielding layer.

8. flexible flat cable according to claim 1 is characterized in that, also comprises one first guard member and is arranged on this metal level.

9. flexible flat cable according to claim 1 is characterized in that, also comprises this ground connection guiding element of one second guard member cover part.

10. flexible flat cable according to claim 9 is characterized in that, this second guard member can be an external member, is sheathed on an end of this first insulating barrier, and these conductor layer two ends are exposed.

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