FFC (flexible flat cable) with external signal shielding structure

Abstract

The utility model discloses a flexible flat cable (FFC) with an external signal shielding structure, and relates to the technical field of FFCs. The FFC flat cable comprises an FFC flat cable body, and a first shielding layer is pasted on the outer side of the FFC flat cable body. A second shielding layer is adhered to the outer side of the first shielding layer; a first dismounting strip is pasted and fixed between the interface of the first shielding layer and the FFC body; a second dismounting strip is pasted and fixed on one side, far away from the FFC body, of the interface of the second shielding layer; pulling strips are fixed at two ends of the first dismantling strip and the second dismantling strip; velcro sub-surfaces are fixed to one sides of the pulling strips fixed to the two ends of the first dismounting strip. According to the utility model, the first shielding layer and the second shielding layer on the outer side of the FFC body can be quickly removed through the action of the first removal strip and the second removal strip, and the shielding of the outer layer does not need to be cut by an edge tool, so that the condition that the FFC body is damaged by the edge tool when the first shielding layer and the second shielding layer are removed is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of FFC flexible flat cables, and particularly relates to an FFC flexible flat cable with an external signal shielding structure. Background Art

[0002] The FFC flexible flat cable is a new type of data cable made of PET insulating material and extremely fine tinned flat copper wires, so it is also called a flexible flat cable connector. When the FFC flexible flat cable is applied in an environment, the signal electromagnetic waves on the cable will interact with other electronic components in the main board, resulting in an interference phenomenon called EMI. For example, when the FFC flexible flat cable applied to a liquid crystal TV is interfered, the display screen of the liquid crystal TV will be interfered, resulting in the common "snowflake". This is because there are discontinuous conductive points on the FFC flexible flat cable, and these non-conductive gaps form electromagnetic leakage on the surface of the FFC flexible flat cable, resulting in electromagnetic waves interfering with electronic components.

[0003] The utility model with the publication number of "CN218957417U" and the name of "FFC flexible flat cable with signal shielding function" discloses an FFC flexible flat cable, which mainly sets a dielectric layer made of PE material between the insulating layer and the shielding layer in each line forming the cable body, and the dielectric layer and the shielding layer together form the shielding structure of the line. The device achieves the effect of shielding external signals by setting the insulating layer, but if the insulating layer and the shielding layer need to be removed from the outside of the FFC flexible flat cable subsequently, a sharp tool such as a knife needs to be used to cut a gap in the insulating layer and then peel it off. This method is likely to scratch the FFC flexible flat cable during processing, resulting in damage to the FFC flexible flat cable. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an FFC flexible flat cable with an external signal shielding structure. Through the action of the first removal strip and the second removal strip, the first shielding layer and the second shielding layer outside the FFC flexible flat cable body can be quickly removed, without using a sharp tool to cut the outer shielding layer, preventing the situation that the sharp tool damages the FFC flexible flat cable body when removing the first shielding layer and the second shielding layer, and solving the problem that if the insulating layer and the shielding layer need to be removed from the outside of the FFC flexible flat cable currently, a sharp tool such as a knife needs to be used to cut a gap in the insulating layer and then peel it off, and this method is likely to scratch the FFC flexible flat cable during processing, resulting in damage to the FFC flexible flat cable.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An FFC flexible flat cable with an external signal shielding structure includes an FFC flexible flat cable body, and a first shielding layer is pasted on the outside of the FFC flexible flat cable body;

[0007] A second shielding layer is pasted on the outside of the first shielding layer;

[0008] A first removal strip is fixedly pasted between the interface of the first shielding layer and the FFC flexible cable body.

[0009] A second removal strip is fixedly pasted on the side away from the FFC flexible cable body at the interface of the second shielding layer.

[0010] Pulling strips are fixed at both ends of the first removal strip and the second removal strip.

[0011] One side of the pulling strip fixed at both ends of the first removal strip is fixed with a hook-and-loop fastener surface, and one side of the pulling strip fixed at both ends of the second removal strip is fixed with a hook-and-loop fastener female surface.

[0012] The present utility model is further configured as: the first shielding layer is an EMI tape;

[0013] Highly conductive materials are fixed at both ends of the first shielding layer, and the highly conductive materials are one of aluminum foil, copper foil and conductive cloth.

[0014] The present utility model is further configured as: an adhesive is applied to the inner wall of the first shielding layer, and conductive powder is mixed in the adhesive.

[0015] The present utility model is further configured as: connection parts are fixed at both ends of the FFC flexible cable body, and a plurality of conductors are fixed on the surface of the connection parts.

[0016] The present utility model is further configured as: the second shielding layer is a hot melt adhesive film, and the base material of the hot melt adhesive film is a PET material.

[0017] The present utility model is further configured as: both sides of the second shielding layer overlap and coincide on one side of the FFC flexible cable body.

[0018] The present utility model is further configured as: both the first removal strip and the second removal strip are made of polytetrafluoroethylene material.

[0019] The present utility model has the following beneficial effects:

[0020] 1. Through the action of the first removal strip and the second removal strip, the first shielding layer and the second shielding layer outside the FFC flexible cable body can be quickly removed without using a sharp tool to cut open the outer shielding layer, preventing the situation that the sharp tool damages the FFC flexible cable body when disassembling the first shielding layer and the second shielding layer.

[0021] 2. Through the action of the highly conductive material, a highly conductive material is pasted on the outside of the FFC flexible cable body. The highly conductive material can be one of aluminum foil, copper foil and conductive cloth. It has good conductivity and is soft enough to allow interfering electrons to spread evenly through the copper foil to resolve interference, thereby improving the shielding effect of the device on external signals.

[0022] Of course, it is not necessary for any product implementing the present utility model to achieve all of the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of an FFC flexible cable with an external signal shielding structure according to the present utility model.

[0025] Figure 2 It is a schematic structural diagram from a side view angle according to the present utility model.

[0026] Figure 3 It is of the present utility model Figure 2 Partial enlarged view at A therein.

[0027] Figure 4 It is a schematic structural diagram of the second shielding layer according to the present utility model.

[0028] Figure 5 It is a schematic structural diagram of the first shielding layer according to the present utility model.

[0029] Figure 6 It is a schematic structural diagram of the first removal strip according to the present utility model.

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] 1 - FFC flexible cable body, 2 - first shielding layer, 3 - second shielding layer, 4 - first removal strip, 5 - second removal strip, 6 - pulling strip, 7 - hook side of the magic tape, 8 - loop side of the magic tape, 9 - highly conductive material, 10 - adhesive, 11 - connecting portion, 12 - conductor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0033] It should be pointed out that unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0034] In the present utility model, unless otherwise specified, the orientations such as "upper" and "lower" generally refer to the directions shown in the drawings or to the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left" and "right" generally refer to the left and right shown in the drawings; "inner" and "outer" refer to the inner and outer of the contours of the respective components themselves, but the above orientation terms are not used to limit the present utility model. Specific Embodiment 1

[0036] Please refer to Figures 1-6 , the present utility model is an FFC cable with an external signal shielding structure, including an FFC cable body 1, a first shielding layer 2 is pasted on the outside of the FFC cable body 1; a second shielding layer 3 is pasted on the outside of the first shielding layer 2; a first removal strip 4 is fixedly pasted between the interface of the first shielding layer 2 and the FFC cable body 1; a second removal strip 5 is fixedly pasted on one side of the interface of the second shielding layer 3 away from the FFC cable body 1; pulling strips 6 are fixed at both ends of the first removal strip 4 and the second removal strip 5; a magic tape surface 7 is fixed on one side of the pulling strips 6 fixed at both ends of the first removal strip 4, and a magic tape mother surface 8 is fixed on one side of the pulling strips 6 fixed at both ends of the second removal strip 5.

[0037] Specifically, the first shielding layer 2 is an EMI tape; high-conductivity materials 9 are fixed at both ends of the first shielding layer 2, and the high-conductivity materials 9 are one of aluminum foil, copper foil and conductive cloth.

[0038] Furthermore, an adhesive 10 is applied to the inner wall of the first shielding layer 2, and conductive powder is mixed in the adhesive 10.

[0039] The operation process of this embodiment is as follows: When this device is in use, the first shielding layer 2 and the second shielding layer 3 outside the FFC flexible cable body 1 are wrapped in multiple layers, greatly improving the signal shielding effect of the FFC flexible cable body 1. When it is necessary to strip the FFC flexible cable body 1 from the first shielding layer 2 and the second shielding layer 3 after a period of use, the hook-and-loop female surface 8 can be pulled away from the hook-and-loop male surface 7, and the second removal strip 5 covering the second shielding layer 3 is pulled, exposing the interface of the second shielding layer 3. Then, hold both ends of the FFC flexible cable body 1, pinch the pulling strips 6 at both ends of the first removal strip 4, and pull them towards the center of the first removal strip 4 simultaneously. At this time, the first removal strip 4 separates the interfaces of the first shielding layer 2 and the second shielding layer 3, and the first shielding layer 2 and the second shielding layer 3 can be peeled off from the outside of the FFC flexible cable body 1. This device wraps the first shielding layer 2 made of EMI tape and the second shielding layer 3 made of hot melt adhesive film outside the FFC flexible cable body 1, and conductive powder is added inside the first shielding layer 2. While improving the signal shielding effect of the FFC flexible cable body 1, it ensures the signal stability of the FFC flexible cable body 1. And the first removal strip 4 and the second removal strip 5 are provided, which can quickly remove the first shielding layer 2 and the second shielding layer 3 outside the FFC flexible cable body 1 without using a sharp tool to cut open the outer shielding layer, preventing the situation that the FFC flexible cable body 1 is damaged by the sharp tool when the first shielding layer 2 and the second shielding layer 3 are disassembled. Specific Embodiment Two

[0041] Please refer to Figures 4-5 , on the basis of Specific Embodiment One, connection parts 11 are fixed at both ends of the FFC flexible cable body 1, and several conductors 12 are fixed on the surface of the connection parts 11; the second shielding layer 3 is a hot melt adhesive film, and the base material of the hot melt adhesive film is PET material.

[0042] Specifically, both sides of the second shielding layer 3 overlap and coincide on one side of the FFC flexible cable body 1.

[0043] Furthermore, both the first removal strip 4 and the second removal strip 5 are made of polytetrafluoroethylene material.

[0044] The operation process of this embodiment is as follows: A highly conductive material 9 is pasted on the outside of the FFC flexible cable body 1. The highly conductive material 9 can be one of aluminum foil, copper foil, and conductive cloth. It has good conductivity and is soft enough to allow interfering electrons to spread evenly through the copper foil to resolve interference, thereby improving the shielding effect of this device on external signals.

[0045] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0046] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present utility model, so that those skilled in the relevant technical fields can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. An FFC cable with an external signal shielding structure, comprising an FFC cable body (1), characterized in that: A first shielding layer (2) is pasted on the outer side of the FFC flexible cable body (1); A second shielding layer (3) is pasted on the outer side of the first shielding layer (2); A first removal strip (4) is fixedly pasted between the interface of the first shielding layer (2) and the FFC flexible cable body (1); A second removal strip (5) is fixedly pasted on the side away from the FFC flexible cable body (1) at the interface of the second shielding layer (3); Pulling strips (6) are fixed at both ends of the first removal strip (4) and the second removal strip (5); One side of the pulling strip (6) fixed at both ends of the first removal strip (4) is fixed with a hook surface of a magic tape (7), and one side of the pulling strip (6) fixed at both ends of the second removal strip (5) is fixed with a loop surface of a magic tape (8).

2. The FFC cable with an external signal shielding structure according to claim 1, wherein, The first shielding layer (2) is an EMI tape; High-conductive materials (9) are fixed at both ends of the first shielding layer (2), and the high-conductive materials (9) are one of aluminum foil, copper foil and conductive cloth.

3. The FFC cable with an external signal shielding structure according to claim 2, characterized in that An adhesive (10) is applied to the inner wall of the first shielding layer (2), and conductive powder is mixed in the adhesive (10).

4. The FFC cable with an external signal shielding structure according to claim 1, characterized in that, Connection parts (11) are fixed at both ends of the FFC flexible cable body (1), and a plurality of conductors (12) are fixed on the surface of the connection parts (11).

5. The FFC cable with an external signal shielding structure according to claim 1, characterized in that, The second shielding layer (3) is a hot-melt adhesive film, and the base material of the hot-melt adhesive film is a PET material.

6. The FFC cable with an external signal shielding structure according to claim 1, wherein, Both sides of the second shielding layer (3) overlap and coincide on one side of the FFC flexible cable body (1).

7. The FFC cable with an external signal shielding structure according to claim 1, characterized in that, Both the first removal strip (4) and the second removal strip (5) are made of polytetrafluoroethylene material.

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