Shielding film pasting line
By installing the ground wire in the shielding film wire and covering the overall shielding layer as a whole, the problem of ground wire occupying space in traditional design is solved, the structure is compact and cost reduction is achieved, and the applicability of the product is improved.
Patent Information
- Application Number
- CN202420633118.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-29
AI Technical Summary
Each pair of traditional shielded film wires has two ground wires, which occupy space, resulting in a less compact structure and increases material usage and production costs.
By placing the ground wire outside the outside of the wire pair structure and covering the overall shielding layer as a whole, the inner shielding layer of each wire pair is cancelled and instead the overall shielding layer is conductively in contact with the metal surface of the ground wire.
The structure of the shielded film wire is achieved to reduce material usage and production costs, and at the same time, more wire-to-structures are provided in the same space, improving the applicability of the product.
Smart Images
Figure CN222636921U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of signal transmission cables, and in particular to shielded film cables. Background Art
[0002] Shield Flexible Cable (SFC) is also called shielded film cable. It connects several pairs of wires together through a layer of film, making it light and practical. Several pairs of wires are arranged in parallel in the middle, and a film is added to the top and bottom to stick or roll them together. The wire pair generally includes two core wires, two ground wires, a shielding layer covering the core wires and the ground wire, and an optional outer layer covering the shielding layer.
[0003] For example, along the extension direction, the cross section of the shielding film line 900 is as follows: Figure 1 and Figure 2 As shown, the shielding film cable 900 has a plurality of wire pairs 100 inside, with gap areas 300 between the wire pairs 100. The wire pairs 100 are provided with a pair of inner conductors 110, an insulating layer 120, a pair of ground wires 130, an inner shielding layer 140 and an inner sheath 150 covered outside the inner shielding layer 140. The inner shielding layer 140 can also be called a shielding layer, the inner sheath 150 is used as an inner sheath, the inner conductor 110 can also be called a core wire, each inner conductor 110 is provided with an insulating layer 120 outside, there can be a first gap 101 or an insulating medium between the two insulating layers 120, there can also be a second gap 102 or an insulating medium between the insulating layer 120 and the ground wire 130, two adjacent wire pairs 100 are spaced apart or in contact with each other, and a gap area 300 is reserved or formed between two adjacent wire pairs 100; a thin film 200 is covered on the outside of the wire pair 100 as a whole to form a shielding film cable 900.
[0004] However, each pair of traditional shielded film cables has two ground wires, which takes up space. Utility Model Content
[0005] Based on this, it is necessary to provide a shielding film cable.
[0006] In one embodiment, a shielded film cable includes a ground wire, a wire pair structure, an overall shielding layer, and a film;
[0007] The wire pair structure comprises a pair of inner conductors, an insulating layer and a wrapping tape, wherein the pair of inner conductors are arranged side by side, and each inner conductor is covered with an insulating layer, and the wrapping tape entirely covers the pair of inner conductors and the insulating layer;
[0008] At least two of the line pair structures are regularly arranged into a line row, only one of the ground wires is arranged between two adjacent line pair structures as a middle ground wire, and one of the ground wires is arranged on both sides of the line row as an edge ground wire;
[0009] The overall shielding layer is entirely covered outside each of the line pair structures and each of the ground wires;
[0010] The film is coated outside the overall shielding layer.
[0011] The above-mentioned shielded film cable, by placing the ground wire outside the line pair structure and cooperating with the design of the overall shielding layer, on the one hand makes the structure of the shielded film cable more compact, achieving the design goal of small and lightweight, and is beneficial to reducing material consumption and the cost of large-scale applications; on the other hand, it is beneficial to provide a larger number of line pair structures in the same space, thereby providing more application options and improving the applicability of the product.
[0012] In one embodiment, the overall shielding layer is integrally covered on each of the wire pair structures and each of the ground wires in a pasting manner or a winding manner, so that the wire array and each of the ground wires form a closed shielding cavity as a whole.
[0013] In one embodiment, the overall shielding layer is tightly and integrally covered outside each of the line pair structures and each of the ground wires; or,
[0014] The film is tightly covered outside the overall shielding layer; or,
[0015] The middle ground line is closely arranged between two adjacent line pair structures; or,
[0016] Along the extension direction, the middle ground line has a cross section of parallel lines, and the overall shielding layer is covered on the outside of the middle ground line in a pressed manner; or,
[0017] Along the extension direction, the edge ground line has an arcuate cross section.
[0018] In one embodiment, the overall shielding layer is integrally covered on each of the wire pair structures and each of the ground wires in a pasting manner or a winding manner, so that each of the wire pair structures and the ground wires on both sides thereof form a closed shielding cavity.
[0019] In one embodiment, the overall shielding layer is tightly and integrally covered outside each of the line pair structures and each of the ground wires; or,
[0020] The film is tightly covered outside the overall shielding layer; or,
[0021] The middle ground line is closely arranged between two adjacent line pair structures; or,
[0022] Along the extension direction, the middle ground line has a cross section of parallel lines, and the overall shielding layer is covered on the outside of the middle ground line in a pressed manner; or,
[0023] Along the extension direction, the edge ground line has an arcuate cross section.
[0024] In one of the embodiments, the film is integrally provided with the overall shielding layer to form a film shielding layer.
[0025] In one embodiment, the thin film shielding layer includes an adhesive layer, a metal film layer, an adhesive layer and an outer layer arranged in sequence;
[0026] Wherein, the outer coating layer is located at the outermost layer of the shielding film wire.
[0027] In one embodiment, the metal film layer is in conductive contact with the ground line; or,
[0028] The adhesive layer is a conductive adhesive layer.
[0029] In one of the embodiments, the overall shielding layer is in conductive contact with each of the edge ground lines.
[0030] In one of the embodiments, the overall shielding layer is also in conductive contact with each of the intermediate ground lines.
[0031] This structural design eliminates the inner shielding layer of each wire pair in the traditional design and instead adds an overall shielding layer. At the same time, the ground wire is placed outside the wrapping tape, and the metal surface of the overall shielding layer faces inward, so that the ground wire and the metal surface of the overall shielding layer are in conductive contact. On the one hand, this is beneficial to signal shielding and anti-interference; on the other hand, there is no need to ground the ground wire of each wire pair structure, only the overall shielding layer needs to be grounded, which greatly improves assembly efficiency; on the other hand, it ensures the correct grounding effect, thereby ensuring the potential balance of each wire pair or wire pair structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0033] Figure 1 This is a schematic diagram of the structure of a traditional shielding film cable.
[0034] Figure 2 for Figure 1 Schematic diagram of the structure of the line pair of the shielded film cable shown.
[0035] Figure 3 It is a schematic structural diagram of an embodiment of the shielding film wire described in this application.
[0036] Figure 4 for Figure 3 The schematic diagram of the structure of the embodiment shown is after the film is removed.
[0037] Figure 5 for Figure 4 A partial structural schematic diagram of the illustrated embodiment.
[0038] Figure 6 It is a schematic structural diagram of another embodiment of the shielding film cable described in the present application.
[0039] Figure 7 for Figure 6 The schematic diagram of the structure of the embodiment shown is after the film is removed.
[0040] Figure 8 It is a schematic structural diagram of another embodiment of the shielding film cable described in the present application.
[0041] Fig. 9 This is a schematic structural diagram of the thin film shielding layer of another embodiment of the shielding film wire described in the present application.
[0042] Figure numerals: wire pair 100, first gap 101, second gap 102, inner conductor 110, insulating layer 120, ground wire 130, middle ground wire 131, edge ground wire 132, inner shielding layer 140, inner coating 150, wrapping tape 160, wire pair structure 170, bonding position 180, film 200, gap area 300, thin film shielding layer 400, adhesive layer 410, metal film layer 420, adhesive layer 430, outer coating 440, overall shielding layer 500, shielding film wire 900. DETAILED DESCRIPTION
[0043] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0044] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0046] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0047] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0048] The present application discloses a shielded film wire, which includes some or all of the technical features of the following embodiments; that is, the shielded film wire includes some or all of the following structures. In one embodiment of the present application, a shielded film wire includes a ground wire, a wire pair structure, an overall shielding layer and a film; the wire pair structure includes a pair of inner conductors, an insulating layer and a pair of wrapping tapes, a pair of the inner conductors are arranged side by side, and each of the inner conductors is coated with an insulating layer, and the pair of wrapping tapes entirely cover a pair of the inner conductors and the insulating layer; at least two of the wire pair structures are regularly arranged into a wire row, only one ground wire is arranged between two adjacent wire pair structures as the middle ground wire, and one ground wire is arranged on both sides of the wire row as an edge ground wire; the overall shielding layer is entirely covered on the outside of each of the wire pair structures and each of the ground wires; the film is covered on the outside of the overall shielding layer. The above-mentioned shielded film cable, by placing the ground wire outside the wire pair structure and coordinating with the overall shielding layer design, makes the structure of the shielded film cable more compact, achieving the design purpose of small and lightweight, and is conducive to reducing material consumption and the cost of large-scale applications; on the other hand, it is conducive to providing more wire pair structures in the same space, thereby providing more application options and improving the applicability of the product. Figures 3 to 9 , the shielding film line is described in detail.
[0049] In one embodiment, a shielding film wire 900 is as follows Figure 3 As shown, it includes a ground wire 130, a wire pair structure 170, an overall shielding layer 500 and a film 200; the film 200 is covered on the outside of the overall shielding layer 500, and the overall shielding layer 500 is covered on the outside of all the wire pair structures 170 and all the ground wires 130, that is, all the wire pair structures 170 and all the ground wires 130 are regarded as a whole, and the overall shielding layer 500 is covered on the outside of the whole. Further, in one embodiment, the overall shielding layer 500 includes but is not limited to a metal film layer and a metal mesh layer, which plays a role in shielding interference of signals, and can also be called a metal shielding layer.
[0050] Combination Figure 4In each embodiment, all the line pair structures 170 are regularly arranged into a line row 190. The line row 190 is composed of the line pair structures 170, which can be understood as a combination of all the line pair structures 170 for ease of description. It should be noted that the line row 190 only shows four line pair structures 170 in the illustrated embodiment. In practical applications, it is not limited to this. The line row 190 may include two, three, five, six or more line pair structures 170. The ground wire 130 can be divided into two types according to the position distribution. The ground wire 130 located between two adjacent line pair structures 170 is used as the middle ground wire 131, and the ground wire 130 located on both sides of the line row 190 is used as the edge ground wire 132 for ease of description below. In each embodiment, the material, structure or type of the middle ground wire 131 and the edge ground wire 132 can be set the same or different.
[0051] Combined Figure 5 In each embodiment, the wire pair structure 170 includes a pair of inner conductors 110, an insulating layer 120 and a wrapping tape 160. The pair of inner conductors 110 are arranged side by side, and each of the inner conductors 110 is covered with an insulating layer 120. The wrapping tape 160 completely covers the pair of inner conductors 110 and the insulating layer 120. At least two of the wire pair structures 170 are regularly arranged into a wire row 190. Only one ground wire 130 is arranged between two adjacent wire pair structures 170 as a middle ground wire 131. Two sides of the wire row 190 are respectively provided with one ground wire 130 as an edge ground wire 132. Moreover, the overall shielding layer 500 is entirely covered on the outside of each of the wire pair structures 170 and each of the ground wires 130. This structural design changes the industry prejudice that the traditional line pair 100 must include a pair of built-in ground wires 130, especially the traditional practice that there must be two ground wires 130 between two adjacent line pairs 100. Only one ground wire 130 is set between the two adjacent line pair structures 170, and the one ground wire 130 is external to the line pair structure 170, making the structure of the shielding film line 900 more compact, achieving the design purpose of small and lightweight, and helping to reduce material consumption and the cost of large-scale applications. Moreover, under this premise, if the width of the shielding film line 900 of traditional specifications is maintained, more line pair structures 170 can be provided in the same space, thereby providing more application options and improving the applicability of the product.
[0052] Each wire pair 100 of the conventional shielded film cable has an independent inner shielding layer 140 and ground wire 130 structure, and the inner shielding layers 140 between two adjacent wire pairs 100 are not connected to each other. When assembling the product and the connector, the ground wire 130 of each wire pair 100 needs to be grounded, which is time-consuming and inefficient. Moreover, if the grounding effect is incorrect, it will affect the potential imbalance of each wire pair 100. In order to solve the above technical problems, in one embodiment, the overall shielding layer 500 is in conductive contact with each edge ground wire 132, and the conductive contact includes direct contact and contact through an intermediate such as conductive glue. In one embodiment, the overall shielding layer 500 is also in conductive contact with each intermediate ground wire 131, that is, the overall shielding layer 500 is in conductive contact with each intermediate ground wire 131 and each edge ground wire 132, that is, the overall shielding layer 500 is in conductive contact with each ground wire 130. Such a structural design eliminates the inner shielding layer 140 of each wire pair 100 in the traditional design, and instead increases an overall shielding layer 500, while placing the ground wire 130 externally, that is, the ground wire 130 is located outside the wrapping tape 160, and the metal surface of the overall shielding layer 500 faces inward, so that the ground wire 130 and the metal surface of the overall shielding layer 500 are in contact, thereby achieving conductive contact between the overall shielding layer 500 and each of the ground wires 130, which is beneficial to signal shielding and anti-interference on the one hand; on the other hand, there is no need to ground the ground wire 130 of each wire pair structure 170, only the overall shielding layer 500 needs to be grounded, which greatly improves the assembly efficiency; on the other hand, it ensures the correct grounding effect, thereby ensuring the potential balance of each wire pair or wire pair structure 170.
[0053] In a specific application, an exemplary production process of the overall shielding layer 500 is provided below. In one embodiment, the overall shielding layer 500 is covered on the outside of each of the wire pair structures 170 and each of the ground wires 130 in a pasting manner, or the overall shielding layer 500 is covered on the outside of each of the wire pair structures 170 and each of the ground wires 130 in a winding manner, that is, the overall shielding layer 500 is covered on the outside of each of the wire pair structures 170 and each of the ground wires 130 in a pasting manner or a winding manner, so that the wire row 190 and each of the ground wires 130 form a closed shielding cavity as a whole. In this embodiment, the overall shielding layer 500 enables the wire row 190 and each of the ground wires 130 to form a closed shielding cavity as a whole, such as Figure 3 and Figure 4 As shown, all of the line pair structures 170 and all of the ground lines 130 are enclosed in the overall shielding layer 500 .
[0054] In order to improve the structural stability and applicability of the shielding film wire 900, in one embodiment, as Figure 6 and Figure 7As shown, the overall shielding layer 500 is integrally covered on each of the wire pair structures 170 and each of the ground wires 130 in a pasting or winding manner, so that each of the wire pair structures 170 and the ground wires 130 on both sides form a closed shielding cavity. Figure 3 and Figure 4 The difference from the embodiment shown is that in this embodiment, the overall shielding layer 500 enables each of the wire pair structures 170 to form a closed shielding cavity. Since there are ground wires 130 on both sides of each of the wire pair structures 170, it can be understood from the shielding principle that the overall shielding layer 500 enables each of the wire pair structures 170 and the ground wires 130 on both sides to form closed shielding cavities, that is, the wire pair structures 170 and the ground wires 130 on both sides are theoretically a closed shielding cavity, and there are as many shielding cavities as there are wire pair structures 170. Since only one ground wire 130 is set between two adjacent wire pair structures 170, in this embodiment, two adjacent shielding cavities actually share one ground wire 130.
[0055] In order to further improve the structural stability and applicability of the shielded film cable 900, in one embodiment, the overall shielding layer 500 is tightly and integrally covered on the outside of each of the line pair structures 170 and each of the ground wires 130 to form a fitting position 180. The fitting positions 180 at one of the line pair structures 170 and the ground wires 130 on both sides of the line pair structure 170 and the ground wires 130 on both sides of the line pair structure 170 and the ground wires 130 on both sides of the line pair structure 170 together form a relatively closed shielding cavity, thereby achieving the designed data transmission purpose. Exemplarily, the overall shielding layer 500 is integrally and tightly covered on the outside of each of the line pair structures 170 and each of the ground wires 130 in a pasting manner or a winding manner, so that the line row 190 and each of the ground wires 130 form a closed shielding cavity as a whole, or each of the line pair structures 170 and the ground wires 130 on both sides of the line pair structure 170 respectively form a closed shielding cavity. Such a structural design enables the overall shielding layer 500 to be reliably connected to the line pair structure 170 and the ground wire 130 in all directions, that is, all positions of the overall shielding layer 500 are reliable connection positions, thereby improving the structural stability and applicability of the shielding film cable 900, and ensuring that the shielding film cable 900 and its overall shielding layer 500 are firm and resistant to bending.
[0056] In order to further improve the structural stability and applicability of the shielding film cable 900, in one embodiment, the film 200 is tightly covered on the outside of the overall shielding layer 500. In combination with the embodiment in which the overall shielding layer 500 is tightly and integrally covered on the outside of each of the line pair structures 170 and each of the ground wires 130, the overall shielding layer 500 is further connected to the line pair structures 170 and the ground wires 130 in a contact-type and reliable manner in all directions, which ensures reliable connection and structural stability on the one hand, and stable and effective shielding on the other hand, thereby improving the structural stability and applicability of the shielding film cable 900 and ensuring that the shielding film cable 900 and its overall shielding layer 500 are firmly resistant to bending.
[0057] In order to simplify production operations and improve production efficiency, in one embodiment, Figure 8 As shown, the film 200 and the overall shielding layer 500 are integrally provided as a film shielding layer 400; Figure 6 The embodiment shown is different in that Figure 6 The embodiment shown has a two-layer covering structure, the overall shielding layer 500 is entirely covered on the outside of each of the line pair structures 170 and each of the ground wires 130; the film 200 is covered on the outside of the overall shielding layer 500; and Figure 8 The embodiment shown has only one layer of coating structure, namely the thin film shielding layer 400. With such a structural design, the thin film shielding layer 400 can be directly purchased from outside, or prepared in advance in other production areas through a prefabrication process, and then directly and integrally coated on the outside of each of the line pair structures 170 and each of the ground wires 130.
[0058] For example, in one embodiment, Fig. 9 As shown, the thin film shielding layer 400 includes an adhesive layer 410, a metal film layer 420, an adhesive layer 430 and an outer layer 440 arranged in sequence; wherein the outer layer 440 is located at the outermost layer of the shielding film wire 900, that is, the adhesive layer 410 is in contact with the wire pair structure 170 and the ground wire 130, that is, the thin film shielding layer 400 is glued to the outside of the wire pair structure 170 and the ground wire 130 as a whole, so that the thin film shielding layer 400 is entirely covered outside each of the wire pair structures 170 and each of the ground wires 130. In one embodiment, the adhesive layer 410 is a conductive adhesive layer, so that each of the ground wires 130 is in conductive contact with the metal film layer 420 through the adhesive layer 410. Alternatively, in one embodiment, the metal film layer 420 is in conductive contact with the ground wire 130; the adhesive layer 410 can use a dispensing or wire gluing method to adhere the metal film layer 420 to each of the wire pair structures 170 and each of the ground wires 130 without affecting the conductive contact between the metal film layer 420 and the ground wire 130.
[0059] In order to further improve the structural stability and reduce the volume of the shielding film line 900, in one embodiment, as Figure 4 and Figure 5 As shown, the middle ground line 131 is closely arranged between two adjacent line pair structures 170, that is, the pair of wrapping tapes 160 of the two adjacent line pair structures 170 are closely in contact with the middle ground line 131 respectively; compared with the traditional design, Figure 1 and Figure 2 , the traditional design is that the ground wires 130 of two adjacent wire pairs 100 are respectively covered by two layers of inner shielding layer 140 and inner lining layer 150, and then spaced or contacted, forming a gap area 300. In this case, two adjacent inner conductors 110 of two adjacent wire pairs 100 are separated by two ground wires 130, two layers of inner shielding layer 140 and two layers of inner lining layer 150, which will cause the volume of the shielding film wire 900 of the traditional design to be relatively large, that is, relatively wide for the cross section shown in the figure, that is, the gap area 300 is wide; in contrast, in each embodiment of the present application, only one ground wire 130 is arranged between two adjacent wire pair structures 170, so the gap area 300 is narrow, making the structure of the shielding film wire 900 more compact, achieving the design purpose of small and lightweight.
[0060] In order to enhance the structural strength of the closed shielding cavity formed by each of the line pair structures 170 and the ground wires 130 on both sides thereof, in one embodiment, along the extension direction, the middle ground wire 131 has a cross section of parallel lines, and the overall shielding layer 500 is covered on the outside of the middle ground wire 131 in a pressing manner. With such a structural design, the structural strength of the shielding film wire 900 at the middle ground wire 131 is greater, which is conducive to ensuring the adhesion of the overall shielding layer 500 and the middle ground wire 131, thereby enhancing the structural strength of the closed shielding cavity formed by the line pair structure 170 and the ground wires 130 on both sides thereof.
[0061] In order to protect the two ends of the shielding film line 900, in one embodiment, along the extension direction, the edge ground line 132 has an arched cross-section, that is, relative to the circular ground line 130, the portion of the edge ground line 132 close to the outside in this embodiment has a larger radius, so that the two ends of the shielding film line 900 are smoother, rather than protruding like the traditional design.
[0062] In one specific application example, Figure 6 and Figure 7As shown, the overall shielding layer 500 is closely attached to the ground wire 130 and is conductively connected, so that each wire pair or its wire pair structure 170 can form a closed shielding cavity; the rest of the embodiments are similar and will not be described in detail. Such a structural design uses an overall shielding layer to replace the conventional independent shielding of each wire pair 100, and the shielding layers of all wire pairs 100 are connected as a total shielding layer 500 to form an equal potential, which greatly improves the ground return effect.
[0063] Exemplarily, the film 200 may also be in close contact with the overall shielding layer 500; and / or, the overall shielding layer 500 and the film 200 may be combined into one layer, i.e., a film shielding layer 400 with a shielding layer on the inside, which is composed of, from inside to outside, an adhesive layer 410 such as a conductive glue, a metal layer such as a metal film layer 420, an adhesive layer 430 and an outer layer 440. In other embodiments, the conductive glue may also be a non-conductive glue, but at this time the glue must be a non-full glue, such as a dot glue or a line glue, to ensure that it can be adhered and the film shielding layer 400 or the overall shielding layer 500 can be in contact with the ground wire 130 for electrical conduction. Such a structural design uses a composite film composed of a conductive glue, a metal layer, an adhesive layer 430 and an outer layer 440, replacing the two-layer structure of the inner shielding layer 140 and the inner layer 150 of the traditional design, and the ground wire 130 is reduced by one compared with the conventional structure of the traditional design, making the structure more compact and achieving the purpose of small size and light weight.
[0064] It should be noted that other embodiments of the present application also include a shielding film cable 900 that can be implemented by combining the technical features in the above embodiments. By placing the ground wire 130 outside the wire pair structure 170 and cooperating with the design of the overall shielding layer 500, on the one hand, the structure of the shielding film cable 900 is made more compact, achieving the design goal of small and lightweight, and is beneficial to reducing material usage and the cost of large-scale applications; on the other hand, it is beneficial to provide a larger number of wire pair structures 170 in the same space, thereby providing more application options and improving the applicability of the product.
[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0066] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.
Claims
1. A shielding film cable (900), characterized in that: It comprises a ground wire (130), a wire pair structure (170), an overall shielding layer (500) and a film (200); The wire pair structure (170) comprises a pair of inner conductors (110), an insulating layer (120) and a wrapping tape (160); the pair of inner conductors (110) are arranged side by side, and each inner conductor (110) is coated with an insulating layer (120); the wrapping tape (160) entirely covers the pair of inner conductors (110) and the insulating layer (120); At least two of the line pair structures (170) are regularly arranged to form a line row (190), only one ground wire (130) is arranged between two adjacent line pair structures (170) as a middle ground wire (131), and one ground wire (130) is arranged on each side of the line row (190) as an edge ground wire (132); The overall shielding layer (500) is entirely covered outside each of the line pair structures (170) and each of the ground wires (130); The film (200) is coated outside the overall shielding layer (500).
2. The shielding film cable (900) according to claim 1, characterized in that: The overall shielding layer (500) is integrally covered on the outside of each of the line pair structures (170) and each of the ground wires (130) in a pasting manner or a winding manner, so that the line row (190) and each of the ground wires (130) form a closed shielding cavity as a whole.
3. The shielding film cable (900) according to claim 2, characterized in that: The overall shielding layer (500) is tightly and integrally covered outside each of the line pair structures (170) and each of the ground wires (130); or, The film (200) is tightly covered outside the overall shielding layer (500); or, The intermediate ground line (131) is closely arranged between two adjacent line pair structures (170); or, Along the extension direction, the middle ground line (131) has a cross section of parallel lines, and the overall shielding layer (500) is also covered on the outside of the middle ground line (131) in a pressing manner; or, Along the extension direction, the edge ground line (132) has an arcuate cross section.
4. The shielding film cable (900) according to claim 1, characterized in that: The overall shielding layer (500) is integrally covered on the outside of each of the wire pair structures (170) and each of the ground wires (130) in a pasting manner or a winding manner, so that each of the wire pair structures (170) and the ground wires (130) on both sides thereof respectively form a closed shielding cavity.
5. The shielding film cable (900) according to claim 4, characterized in that: The overall shielding layer (500) is tightly and integrally covered outside each of the line pair structures (170) and each of the ground wires (130); or, The film (200) is tightly covered outside the overall shielding layer (500); or, The intermediate ground line (131) is closely arranged between two adjacent line pair structures (170); or, Along the extension direction, the middle ground line (131) has a cross section of parallel lines, and the overall shielding layer (500) is covered on the outside of the middle ground line (131) in a pressed manner; or, Along the extension direction, the edge ground line (132) has an arcuate cross section.
6. The shielding film cable (900) according to claim 1, characterized in that: The thin film (200) and the overall shielding layer (500) are integrally provided as a thin film shielding layer (400).
7. The shielding film cable (900) according to claim 6, characterized in that: The thin film shielding layer (400) comprises an adhesive layer (410), a metal film layer (420), an adhesive layer (430) and an outer coating layer (440) which are arranged in sequence; Wherein, the outer coating layer (440) is located at the outermost layer of the shielding film wire (900).
8. The shielding film cable (900) according to claim 7, characterized in that: The metal film layer (420) is in conductive contact with the ground line (130); or, The adhesive layer (410) is a conductive adhesive layer.
9. The shielding film cable (900) according to any one of claims 1 to 8, characterized in that: The overall shielding layer (500) is in conductive contact with each of the edge ground lines (132).
10. The shielding film cable (900) according to claim 9, characterized in that: The overall shielding layer (500) is also in conductive contact with each of the intermediate ground lines (131).