TWM587354U - Flexible flat cable structure - Google Patents

Abstract

The present invention discloses a flexible flat cable structure comprising a conductor layer, a first composite material layer, a first insulating rubber layer, a second insulating rubber layer and a reinforcing plate. After the conductor layer, the first composite material layer, the first insulating rubber layer and the second insulating rubber layer are combined, the plurality of strips are divided into a plurality of strips, and each strip provides a plurality of wires, and the first end and the second end of the wires are exposed the second insulating glue.

Description

Flexible flat cable structure

This creation is a technical field of flat cable, especially a strip type flexible flat cable structure.

Traditionally, Flexible Flat Cable (FFC) is a data cable formed by laminating PET insulated tinned flat copper wires through an automated equipment production line. It is used to provide signal transmission. Music, high-frequency signal transmission capabilities and other advantages.

Flexible flat cables have the characteristics of being bendable arbitrarily, and can be made with different thicknesses of insulation layers according to different needs.

This creation proposes a flexible flat cable structure, which is used to provide stable characteristic impedance and suitable for high frequency signal transmission.

The first purpose of this creation is to provide a flexible flat cable structure that provides multiple strips, and each strip has a single or multiple wires built in to increase resistance to bending and flexibility.

The second purpose of this creation is to provide a multilayer structure of a conductor layer, an insulating rubber layer, and a composite material layer according to the aforementioned flexible flat cable structure.

The third purpose of this creation is based on the aforementioned flexible flat cable structure, by adjusting the thickness of the composite material layer, to provide stable characteristic impedance and suitable for transmission of high-frequency signals.

The fourth objective of this creation is to provide one or two layers of composite material on the side of the conductor layer according to the aforementioned flexible flat cable structure, so as to reduce the interference of shielding electromagnetic signals.

The fifth objective of this creation is to connect the first connector and the second connector to the male or female end of the circuit board according to the aforementioned flexible flat cable structure, and to be able to transmit electronic signals.

The sixth object of this creation is to provide a reinforcing plate for combining the first connector and the second connector to increase the electrical connection between the first connector and the second connector according to the aforementioned flexible flat cable structure. The stability.

The seventh objective of this creation is based on the aforementioned flexible flat cable structure, which is to form a ground opening in the composite material layer to connect the ground ends of the first connector and the second connector.

The eighth object of this creation is based on the aforementioned flexible flat cable structure. The conductor layer has a body and a coupling portion, and a portion between the body and the coupling portion presents a tapered slope.

The ninth object of this creation is that according to the aforementioned flexible flat cable structure, the cross-sectional shape of the wires in the coupling portion is the same or different from the cross-sectional shape of the wires in the body.

The tenth object of this creation is based on the flexible flat cable structure described above. A first end and a second end of the wire can be exposed on the same side of the insulating adhesive layer or the insulating adhesive layers on different sides at the same time. Adapt to different circuit designs.

In order to achieve the above and other objectives, the present invention provides a flexible flat cable structure, which includes a conductor layer, a first composite material layer, a first insulating adhesive layer, a second insulating adhesive layer, and a reinforcing plate. . The conductive layer has a first surface and a second surface. A first composite material layer is formed on the first side of the conductor layer. The first composite material layer shields the electromagnetic signal. The first insulating glue layer is formed between the conductor layer and the first composite material layer. A second insulating adhesive layer is formed on one side of the conductor layer that is not the first insulating adhesive layer. The reinforcing plate is disposed between the first insulating adhesive layer and the first composite material layer, and a part of the reinforcing plate is exposed in the first composite material layer. Among them, the conductor layer, the first composite material layer, the first insulating rubber layer and the second insulating rubber layer are cut into a plurality of strips after being combined, and each strip is provided with a plurality of conductors. The ends are simultaneously exposed in the first insulating glue layer or the second insulating glue layer, and the first ends of the wires are exposed in the first insulating glue layer and the second ends of the wires are exposed in the second insulating glue layer. Or the first ends of the wires are exposed in the second insulating glue layer and the second ends of the wires are exposed in the first insulating glue layer.

Compared with the conventional technology, the flexible flat cable structure provided by this creation is a multi-layer structure, which is used for the transmission of signal / power, and is divided into a plurality of strips, each of which provides a plurality of conductors, and then Alternatively, a composite material layer is provided on at least one side of the conductor layer to shield electromagnetic signals.

10, 10’‧‧‧ Flexible flat cable structure

12‧‧‧conductor layer

122‧‧‧ the first side

124‧‧‧Second Side

126‧‧‧Wire

1262‧‧‧First End

1264‧‧‧Second End

128‧‧‧ Ontology

1210‧‧‧Coupling Department

14‧‧‧ the first composite material layer

16‧‧‧The first insulating adhesive layer

18‧‧‧Second insulating rubber layer

20‧‧‧ Reinforcing board

22‧‧‧first connector

24‧‧‧Second connector

26‧‧‧Second composite material layer

264‧‧‧ aluminum foil

d‧‧‧ clearance

FIG. 1 is a schematic cross-sectional view of a flexible flat cable structure according to a first embodiment of the present invention.

FIG. 2 is a schematic top view illustrating the flexible flat cable structure of FIG. 3 in the present invention.

3 is a schematic cross-sectional view of a flexible flat cable structure according to a second embodiment of the present invention.

FIG. 4 is a schematic plan view illustrating the flexible flat cable structure of FIG. 3 in the present invention.

In order to fully understand the purpose, features, and effects of this creation, we will use the following specific examples and the accompanying drawings to make a detailed description of this creation, as described later.

In this work, "a" or "an" is used to describe the units, components, and assemblies described herein. This is only for the convenience of explanation and provides a general meaning to the scope of this creation. Therefore, unless it is obvious that he meant otherwise, such a description should be understood to include one, at least one, and also the plural.

In this creation, the terms "including", "including", "having", "containing" or any other similar language are intended to cover non-exclusive inclusions. For example, an element, structure, article, or device containing a plurality of elements is not limited to only those elements listed herein, but may include an element, structure, article, or device that is not explicitly listed but is generally inherent to the element, structure, article, or device Other requirements. In addition, unless expressly stated to the contrary, the term "or" means an inclusive "or" rather than an exclusive "or".

Please refer to FIG. 1, which is a schematic cross-sectional view of a flexible flat cable structure according to a first embodiment of the present invention. In FIG. 1, a flexible flat cable structure 10 includes a conductor layer 12, a first composite material layer 14, a first insulating adhesive layer 16, a second insulating adhesive layer 18, and a reinforcing plate 20.

The conductive layer 12 has a first surface 122 and a second surface 124. Here, the first surface 122 refers to the lower side and the second surface 124 refers to the upper side. The conductive layer 12 is composed of a plurality of conductive wires 126, and reference may be made to the schematic plan view of FIG. 2. The wires 126 are separated by a gap d. Here, the number of the wires 126 is described by taking five as an example. In other embodiments, the number may be adjusted according to actual needs.

The conductive layer 12 further includes a body 128 and a coupling portion 1210. The body 128 is connected to the coupling portion 1210, and the enlarged schematic diagram is also referred to together. A portion between the body 12 and the coupling portion 1210 presents a pitch, so as to be suitable for a connector mentioned later. The cross-sectional shape of the conductive wire 126 of the coupling portion 1210 is the same or different from the cross-sectional shape of the conductive wire 126 located in the body 128. Here, the cross-sectional shape of the lead 126 located in the body 128 is circular, and the cross-sectional shape of the lead 126 located in the coupling portion 1210 is thin. In other embodiments, the cross-sectional shape of the wire 126 located on the body 128 may be a square, a triangle, a rectangle, a polygon, or the like.

Returning to FIG. 1, the first composite material layer 14 is formed on the first surface 122 of the conductor layer 12. For example, the material of the first composite material layer 14 may be two or more materials such as metal materials, ceramic materials, or polymer materials Substrate prepared through a composite process. Since the first composite material layer 14 includes a metal material, it can resist electromagnetic signals. The first composite material layer 14 is stacked on the conductor layer 12, and the length of the first composite material layer 14 is shorter than the length of the conductor layer 12.

The first insulating adhesive layer 16 is formed between the conductor layer 12 and the first composite material layer 14 to bond the conductor layer 12 and the first composite material layer 14. For example, the bonding method is bonding, coupling, or bonding. The material of the adhesive layer 18 is not only used to combine the first composite material layer 14 and the conductor layer 12, but also can prevent the electrical signals between the wires 126 from contacting each other, causing malfunction.

The second insulating rubber layer 18 is formed on one side of the conductor layer 12 that is not the first insulating rubber layer 16 to prevent the electrical signals between the wires 126 from contacting each other, causing malfunction.

The reinforcing plate 20 is disposed between the first insulating rubber layer 16 and the first composite material layer 14, and a part of the reinforcing plate 20 is exposed in the first composite material layer 14. The purpose of the reinforcing plate 20 can be used to increase the thickness of the ends of the conductor layer 12. The reinforcing plate 20 can be used to connect electrical connectors to snap the wires 126 to the electrical connectors.

The conductor layer 12, the first composite material layer 14, the first insulating adhesive layer 16 and the second insulating adhesive layer 18 are cut into a plurality of strips (or multiple strands) after being combined, and each strip (or strand) provides one or The plurality of wires 126 are shown in an enlarged view in FIG. 2. The first ends 1262 and the second ends 1264 of the wires 126 are exposed in the second insulating adhesive layer 18. Except that in this embodiment, the wires 126 appear on the same side, that is, they are simultaneously exposed in the second insulating rubber layer 18. In another embodiment, the wires 126 have a first end 1262 and a second end. 1264 may be exposed on the first insulating rubber layer 16 and the second insulating rubber layer 18, for example, the first ends 1262 of the wires 126 are exposed on the first insulating rubber layer 16 and the second ends of the wires 126. 1264 is exposed on the second insulating adhesive layer 18.

Please refer to FIG. 3, which is a schematic cross-sectional view of a flexible flat cable structure according to a second embodiment of the present invention. In FIG. 3, the flexible flat cable structure 10 ′ includes the conductor layer 12, the first composite material layer 14, the first insulating adhesive layer 16, the second insulating adhesive layer 18 and the reinforcing plate 20 of the first embodiment. In addition, it further includes a first connector 22, a second connector 24 and a second composite material layer 26.

Referring to FIG. 4 together, it is a schematic plan view illustrating the flexible flat cable structure shown in FIG. 3 in the present invention. The first connection head 22 is a male head or a female head. Here, the male head is taken as an example for description. The first connector 22 provides a plurality of terminals for connecting the first ends 1262 of the wires 126. In addition, the first connection head 22 provides a ground terminal for connecting a ground terminal of the circuit board. In another embodiment, the first connector 22 can also directly provide the first ends 1262 of the wires 126.

The second connection head 24 can also be a male or a female head. Here, the male head is taken as an example for illustration. The second connector 24 provides a plurality of terminals for connecting the second ends 1264 of the wires 126. In addition, the second connector 24 provides a ground terminal for connecting a ground terminal of the circuit board. In another embodiment, the second connector 24 can also directly provide the second ends 1264 of the wires 126.

The second composite material layer 26 is formed on the second surface of the conductor layer 12. The second composite material layer 26 can be used for shielding electromagnetic signals. In another embodiment, the second composite material layer 26 further forms grounding openings 262, which are respectively formed on two sides of the second composite material layer 26. The aforementioned ground opening 262 can be used for coupling the ground terminal of the first connector 22 and the ground terminal of the second connector 24. In another embodiment, an aluminum foil 264 is further provided in the ground opening 262 to connect the ground terminal of the first connector 22 and the ground terminal of the second connector 24.

This creation has been disclosed in the above with a preferred embodiment, but those skilled in the art should understand that the embodiment is only used to describe this creation, and should not be interpreted as limiting the scope of this creation. It should be noted that all changes and substitutions equivalent to the embodiments should be set to cover the scope of this creation. Therefore, the scope of protection of this creation shall be defined by the scope of the patent application.

Claims (10)

A flexible flat cable structure includes: a conductor layer having a first surface and a second surface; a first composite material layer formed on the first surface of the conductor layer, wherein the first composite material layer Shielding electromagnetic signals; a first insulating rubber layer is formed between the conductor layer and the first composite material layer; a second insulating rubber layer is formed on one side of the conductor layer which is not the first insulating rubber layer; and The reinforcing plate is disposed between the first insulating rubber layer and the first composite material layer, and a part of the reinforcing plate is exposed in the first composite material layer; wherein the conductor layer, the first composite material layer, The first insulating glue layer is combined with the second insulating glue layer and divided into a plurality of strips, each of which provides a plurality of wires, and the first ends and the second ends of the wires are simultaneously exposed in the first insulation glue layer. Or the second insulating glue layer, or the first end and the second end of the wires are respectively exposed in the first insulating glue layer and the second insulating glue layer. The flexible flat cable structure described in item 1 or 2 of the patent application scope further includes a second composite material layer formed on the second side of the conductor layer, wherein the second composite material layer shields electromagnetic signals . The flexible flat cable structure according to item 2 of the scope of the patent application, wherein the second composite material layer further forms a ground opening, which is formed on two sides of the second composite material layer, respectively. The flexible flat cable structure described in item 3 of the scope of patent application, further comprising an aluminum foil sheet disposed at the ground opening. The flexible flat cable structure described in item 3 or 4 of the scope of patent application, further comprising a first connector and a second connector, and the first connector connects the first ends of the wires to the first connector. The connector is connected to the second ends of the wires, and the ground terminal of the first connector and the ground terminal of the second connector are respectively coupled to the ground opening. The flexible flat cable structure described in item 1 of the scope of patent application, wherein the conductor layer further includes a body and a coupling portion, the body is connected to the coupling portion, and a portion between the body and the coupling portion presents a bevel (pitch) ). The flexible flat cable structure according to item 6 of the scope of patent application, wherein the cross-sectional shape of the wires located at the coupling portion is the same or different from the cross-sectional shape of the wires located at the body, wherein the The cross-sectional shape of the iso-conductor is square, triangle, rectangle and polygon. The flexible flat cable structure described in item 7 of the scope of patent application, wherein the cross-sectional shape of the wires located on the body is circular. The flexible flat cable structure described in item 6 of the scope of the patent application, wherein the cross-sectional shape of the wires located in the coupling portion is a sheet shape. According to the flexible flat cable structure described in item 8 of the scope of patent application, there is a gap between the wires.