Flexible flat cable

Abstract

The utility model discloses a flexible flat cable, and belongs to the technical field of flexible cables, the flexible flat cable can comprise a flat cable main body and an electrostatic film, two ends of the flat cable main body are connecting ends, and a part between the two ends of the flat cable main body is a bending area; the electrostatic film is attached to the bending area. According to the flexible flat cable provided by the invention, the static film is added to the bending area of the flat cable main body, so that interference caused by static electricity can be effectively reduced, normal work of the flexible flat cable is ensured, and the reliability and the service life of electronic equipment are improved.

Description

Technical Field

[0001] This application relates to the field of flexible cable technology, and more particularly to a flexible ribbon cable. Background Technology

[0002] Flexible flat cables are electrical wires used to connect electronic components, typically made of braided strands of fine copper wires. These wires are usually covered to protect them from environmental damage. Flexible flat cables are widely used for connecting printheads to motherboards in various printers, as well as for signal transmission and circuit board connections in products such as plotters, scanners, copiers, audio equipment, LCD displays, fax machines, and various DVD players. In addition, flexible flat cables have good bending and folding properties, allowing electronic components to be arranged in confined spaces.

[0003] However, during the bending and use of flexible ribbon cables, they are prone to friction with other parts of the equipment, which can cause static electricity to be generated at the flexible ribbon cable and affect its normal use. Utility Model Content

[0004] The main purpose of this application is to provide a flexible ribbon cable that solves the problem of static electricity generated at the flexible ribbon cable, which affects the normal use of the flexible ribbon cable.

[0005] To achieve the above objectives, this application provides a flexible ribbon cable, which includes a ribbon cable body and an electrostatic film. The two ends of the ribbon cable body are connection ends, and the portion between the two ends of the ribbon cable body is a bending region; the electrostatic film is attached to the bending region.

[0006] Optionally, the bending region has opposing first and second sides in the thickness direction of the ribbon cable body; the electrostatic film is attached to the first side and / or the second side.

[0007] Optionally, in the width direction of the ribbon cable body, the bending areas extend from both sides of the electrostatic film; wherein, when the electrostatic film is attached to the first side and the second side, the two electrostatic films are arranged opposite each other and the portions extending from the bending areas are correspondingly attached.

[0008] Optionally, the ratio of the thickness of the electrostatic film to the thickness of the ribbon cable body is a, and 0.4 < a < 0.5.

[0009] Optionally, the flexible cable also includes acetate cloth, which is disposed around the outer periphery of the bending area.

[0010] Optionally, the acetate cloth and the electrostatic film are arranged along the length of the ribbon cable body, and the acetate cloth and the electrostatic film have an overlapping area; wherein, in the overlapping area, the acetate cloth covers the electrostatic film.

[0011] Optionally, the acetate cloth completely covers the electrostatic film.

[0012] Optionally, the acetate cloth is entirely located within the overlapping area.

[0013] Optionally, the ratio of the thickness of the acetate cloth to the thickness of the ribbon cable body is b, and 0.6 < b < 0.7.

[0014] Optionally, the thickness of the electrostatic film is 0.05 mm, and the thickness of the acetate cloth is 0.08 mm.

[0015] The flexible ribbon cable proposed in this application can effectively reduce interference caused by static electricity by adding an electrostatic film to the bending area of ​​the ribbon cable body, thereby ensuring the normal operation of the flexible ribbon cable and improving the reliability and service life of electronic devices. Attached Figure Description

[0016] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of a flexible ribbon cable provided in Embodiment 1 of this application;

[0019] Figure 2 This is a schematic diagram of the overall structure of a flexible cable provided in Embodiment 2 of this application;

[0020] Figure 3 This is a schematic diagram of the overall structure of a flexible ribbon cable provided in Embodiment 3 of this application;

[0021] Figure 4 This is a schematic diagram of the overall structure of a flexible ribbon cable provided in Embodiment 4 of this application.

[0022] In the diagram: 1. Main body of the ribbon cable; 2. Electrostatic film; 3. Acetate cloth.

[0023] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the overall structure of a flexible ribbon cable provided in Embodiment 1 of this application; Figure 2This is a schematic diagram of the overall structure of a flexible cable provided in Embodiment 2 of this application; Figure 3 This is a schematic diagram of the overall structure of a flexible ribbon cable provided in Embodiment 3 of this application; Figure 4 This is a schematic diagram of the overall structure of a flexible ribbon cable provided in Embodiment 4 of this application.

[0030] The following describes the application scenarios of the flexible cabling described in this application.

[0031] Taking a foldable display device as an example, the display device includes a display screen and a main body. The display screen and the main body can be folded relative to each other, such as a laptop. A flexible ribbon cable is set between the display screen and the main body. The space at the connection between the display screen and the main body is small, and the flexible ribbon cable is prone to friction with the display device casing or other parts, which makes the flexible ribbon cable susceptible to static interference. Alternatively, static electricity brought by external operators can be transferred to the flexible ribbon cable, ultimately causing problems such as screen distortion and rendering the display device unusable.

[0032] refer to Figures 1-4 This application provides a flexible ribbon cable, which may include a ribbon cable body 1 and an electrostatic film 2. The two ends of the ribbon cable body 1 are connection ends, and the part between the two ends of the ribbon cable body 1 is a bending area; the electrostatic film 2 is attached to the bending area.

[0033] The flexible ribbon cable proposed in this application embodiment can effectively reduce interference caused by static electricity by adding an electrostatic film 2 at the bending area of ​​the ribbon cable body 1, thereby ensuring the normal operation of the flexible ribbon cable and improving the reliability and service life of electronic devices using the flexible ribbon cable.

[0034] Specifically, the ribbon cable body 1 is flat and long, and the electrostatic film 2 is rectangular; the ribbon cable body 1 can be FFC (Flexible Flat Cable) or FPC (Flexible Printed Circuit).

[0035] The two ends of the ribbon cable body 1 serve as connection points, connecting to other electronic devices or circuit boards, and are responsible for transmitting signals or power between two electronic components. After attaching the electrostatic film 2 to the bending area, electrostatic interference can be effectively reduced, ensuring the stability of the ribbon cable body 1 in transmitting signals or power between two electronic components.

[0036] In an exemplary embodiment, the bending region has opposing first and second sides in the thickness direction of the cable body 1; the electrostatic film 2 is attached to the first and / or second sides.

[0037] It should be understood that there are three options: first, the electrostatic film 2 is attached to the first side; second, the electrostatic film 2 is attached to the second side; and third, the electrostatic film 2 is attached to both the first and second sides.

[0038] Specifically, when the first side of the bending area is prone to friction with the rest of the equipment, the electrostatic film 2 can be placed on the first side of the bending area to prevent the first side of the bending area from being subject to electrostatic interference; when the second side of the bending area is prone to friction with the rest of the equipment, the electrostatic film 2 can be placed on the second side of the bending area to be subject to electrostatic interference.

[0039] When the electrostatic film 2 is attached to the first and second sides, both the first and second sides of the bending area can prevent electrostatic interference. Therefore, it is not necessary to consider which side is facing the device that is prone to friction during use, making it more convenient to use. However, compared to attaching the electrostatic film 2 to one side, the cost increases and the manufacturing steps increase. The specific method of attaching the electrostatic film 2 can be selected according to the actual situation.

[0040] It should be noted that the electrostatic film 2 is applied to either the first or second side, which is considered a one-sided application.

[0041] In an exemplary embodiment, the electrostatic film 2 extends out of bending areas on both sides in the width direction of the ribbon cable body 1; wherein, when the electrostatic film 2 is attached to the first side and the second side, the two electrostatic films 2 are arranged opposite each other and the portions of the bending areas extending out are correspondingly attached.

[0042] Specifically, when the above-mentioned scheme of attaching electrostatic film 2 to both the first and second sides is adopted, there are two electrostatic films 2 and they are arranged opposite each other; in the width direction of the ribbon cable body 1, the two sides of the electrostatic film 2 extend out bending areas, that is, the width of the electrostatic film 2 is greater than the width of the ribbon cable body 1 in the bending area. In this way, the parts of the two electrostatic films 2 extending out of the bending area are attached to each other, and the side edge of the ribbon cable body 1 can be protected to prevent electrostatic interference.

[0043] Furthermore, the two electrostatic films 2 extend out of the bent areas and are attached and adsorbed accordingly. Due to the mutual adsorption, the electrostatic films 2 are more stably fixed.

[0044] In an exemplary embodiment, the flexible cable may further include an acetate cloth 3, which surrounds the outer periphery of the bending area.

[0045] Specifically, the acetate cloth 3 is relatively soft and wear-resistant. After the acetate cloth 3 is placed around the outer periphery of the bending area, the acetate cloth 3 replaces the main body 1 of the cable and rubs against the rest of the equipment, effectively protecting the main body 1 of the cable and preventing it from being damaged due to friction, thus improving the service life of the main body 1 of the cable.

[0046] It should be understood that the acetate cloth 3 can be fixed by adhesive.

[0047] refer to Figure 2 In an exemplary embodiment, the acetate cloth 3 and the electrostatic film 2 are arranged along the length of the cable body 1, and the acetate cloth 3 and the electrostatic film 2 have an overlapping area; wherein, in the overlapping area, the acetate cloth 3 covers the electrostatic film 2.

[0048] Specifically, the electrostatic film 2 can be glued to the ribbon cable body 1, or it can be left uncoated and rely on the electrostatic adsorption of the electrostatic film 2 itself to stick to the item and play a protective role.

[0049] In the overlapping area, the acetate cloth 3 covers the electrostatic film 2, which can further fix the position of the electrostatic film 2 by the acetate cloth 3. When the electrostatic film 2 is glued to the bending area, the acetate cloth 3 can further fix the electrostatic film 2. When the electrostatic film 2 is not glued, the acetate cloth 3 can fix the electrostatic film 2 to prevent the electrostatic film 2 from falling off during the bending process of the ribbon cable body 1. At the same time, in the bending area, the acetate cloth 3 can reduce the friction of the electrostatic film 2 and improve the service life of the electrostatic film 2.

[0050] It should be understood that the larger the area of ​​the overlapping region, the better the fixation effect of the acetate cloth 3 on the electrostatic film 2.

[0051] It should be noted that when the electrostatic film 2 is attached to both sides of the bending area, the area of ​​the overlapping area is only calculated on one side. Thus, regardless of whether the electrostatic film 2 is attached to one side or both sides of the bending area, the area of ​​the overlapping area is the same.

[0052] Of course, for reference Figure 4 The acetate cloth 3 and the electrostatic film 2 can also be arranged along the length of the ribbon cable body 1, and there is a gap between the acetate cloth 3 and the electrostatic film 2. That is, the electrostatic film 2 can be glued to the bending area, and the acetate cloth 3 can also be glued to the bending area, without overlapping each other.

[0053] refer to Figure 1 In an exemplary embodiment, the acetate cloth 3 completely covers the electrostatic film 2. This provides optimal fixation of the electrostatic film 2 by the acetate cloth 3. In the length direction of the ribbon cable body 1, the length of the electrostatic film 2 is less than or equal to the length of the acetate cloth 3. When the length of the electrostatic film 2 is equal to the length of the acetate cloth 3, the antistatic effect is even better. When the length of the electrostatic film 2 is less than the length of the acetate cloth 3, the electrostatic film 2 can be positioned in the middle of the acetate cloth 3, thus reducing the thickness of the ribbon cable body 1 near both ends, thereby facilitating the connection of the ribbon cable body 1 with other electronic components.

[0054] refer to Figure 3In an exemplary embodiment, the acetate cloth 3 is completely located within the overlapping area. In other words, in the length direction of the ribbon cable body 1, the length of the acetate cloth 3 is less than or equal to the length of the electrostatic film 2. When the length of the acetate cloth 3 is equal to the length of the electrostatic film 2, the fixing effect of the acetate cloth 3 on the electrostatic film 2 is optimal. When the length of the acetate cloth 3 is less than the length of the electrostatic film 2, the acetate cloth 3 can be located in the middle of the electrostatic film 2. This can reduce the thickness of the ribbon cable body 1 near both ends, thereby facilitating the connection of the ribbon cable body 1 with other electronic components.

[0055] It can be seen that, in the preferred embodiment, the length of the acetate cloth 3 is equal to the length of the electrostatic film 2 in the length direction of the ribbon cable body 1. At this time, the acetate cloth 3 has the best fixing effect on the electrostatic film 2 and the antistatic effect is better. On this basis, the longer the length of the acetate cloth 3 and the electrostatic film 2, the better the protection effect on the ribbon cable body 1.

[0056] The protection of the main body 1 of the cable tray refers to preventing the main body 1 of the cable tray from being damaged by friction with other parts of the equipment, and preventing the main body 1 of the cable tray from being affected by electrostatic interference.

[0057] In an exemplary embodiment, the ratio of the thickness of the electrostatic film 2 to the thickness of the ribbon cable body 1 is a, and 0.4 < a < 0.5; the ratio of the thickness of the acetate cloth 3 to the thickness of the ribbon cable body 1 is b, and 0.6 < b < 0.7.

[0058] Specifically, the thickness of the electrostatic film 2 and the acetate cloth 3 is relatively small compared to the ribbon cable body 1. Thus, when the electrostatic film 2 and the acetate cloth 3 are placed on the ribbon cable body 1, the bending action of the ribbon cable body 1 will not be affected. At the same time, due to the softness and wear resistance of the acetate cloth 3, the service life of the ribbon cable body 1 and the electrostatic film 2 can be effectively improved, and the bending number of the ribbon cable body 1 can be further increased, from about 30,000 times to more than 100,000 times.

[0059] Specifically, the thickness of the electrostatic film 2 can be 0.05mm, the thickness of the acetate cloth 3 can be 0.08mm, and the ribbon cable body 1 can use FFC wire with a thickness of 0.12mm.

[0060] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A flexible flat cable, characterized by, The application relates to a flat cable, comprising: a flat cable body (1) with two connection ends and a bending area between the two connection ends; an electrostatic film (2) attached to the bending area; an acetate cloth (3) arranged around the outer periphery of the bending area.

2. The flexible flat cable according to claim 1, wherein The bending area has opposite first and second side surfaces in the thickness direction of the flat cable body (1); the electrostatic film (2) is attached to the first and / or second side surfaces.

3. The flexible flat cable according to claim 2, wherein In the width direction of the flat cable body (1), the electrostatic film (2) extends beyond the bending area on both sides; when the electrostatic film (2) is attached to the first and second side surfaces, the two electrostatic films (2) are arranged opposite to each other and correspondingly attached to the part extending beyond the bending area.

4. The flexible flat cable according to claim 1, wherein The ratio of the thickness of the electrostatic film (2) to the thickness of the flat cable body (1) is a, and 0.4 < a < 0.

5.

5. The flexible flat cable according to claim 1, wherein The acetate cloth (3) and the electrostatic film (2) are arranged in the length direction of the flat cable body (1), and the acetate cloth (3) and the electrostatic film (2) have an overlapping area; in the overlapping area, the acetate cloth (3) covers the electrostatic film (2).

6. The flexible flat cable according to claim 5, wherein The acetate cloth (3) completely covers the electrostatic film (2).

7. The flexible flat cable according to claim 5, wherein The acetate cloth (3) is completely located in the overlapping area.

8. The flexible flat cable of claim 1, wherein, The ratio of the thickness of the acetate cloth (3) to the thickness of the flat cable body (1) is b, and 0.6 < b < 0.

7.

9. The flexible flat cable according to claim 1, wherein The thickness of the electrostatic film (2) is 0.05 mm, and the thickness of the acetate cloth (3) is 0.08 mm.

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