A composite insulated flat cable

Abstract

This utility model belongs to the field of wire and cable technology, specifically a composite insulated flat cable, including at least two parallel conductors covered with an insulating outer sheath. It also includes: two elastic load-bearing members symmetrically arranged on the upper and lower sides of the conductors, fixedly connected to form an integral load-bearing structure, with a buffer filling layer between the elastic load-bearing members and the insulating outer sheath; and an outer sheath disposed outside the elastic load-bearing members, with wear-resistant strips fixed to the four sides of the outer sheath, and a warning strip embedded inside the wear-resistant strip and fixed to the outer wall of the outer sheath. This utility model, through the integral load-bearing structure formed by the two elastic load-bearing members, can effectively disperse external pressure and impact, preventing the insulation layer from being crushed or damaged, and protecting the internal conductors. Simultaneously, the wear-resistant strips effectively improve the wear resistance of the cable surface, and the embedded warning strips can promptly indicate maintenance or replacement when the wear-resistant strips are damaged.

Description

Technical Field

[0001] This utility model belongs to the field of wire and cable technology, and more specifically, it relates to a composite insulated flat cable. Background Technology

[0002] With the development of industrial automation, intelligent equipment and other fields, flat cables are widely used in robot drag chains, precision instrument connections and flexible circuit board power supply due to their characteristics such as flat cross-section, small space occupation and high laying flexibility.

[0003] Traditional flat cables typically consist of multiple parallel conductors encased in an insulation layer. Due to their flat overall structure, when subjected to vertical pressure, the pressure acts directly on a flat surface and cannot be effectively dispersed in all directions. The pressure concentrates directly above the conductors, which can easily cause the insulation to be flattened or even broken, potentially leading to exposed conductors, leakage, equipment damage, or even safety accidents.

[0004] To address the aforementioned problems, this application proposes a composite insulated flat cable. Utility Model Content

[0005] The purpose of this invention is to provide a composite insulated flat cable that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a composite insulated flat cable, comprising at least two parallel conductors, the conductors being covered with an insulating sheath, and further comprising:

[0008] Two elastic load-bearing components are symmetrically arranged on the upper and lower sides of the conductor. The two elastic load-bearing components are fixedly connected to form an integral load-bearing structure. A buffer filling layer is filled between the elastic load-bearing components and the insulating outer sheath.

[0009] An outer sheath is installed on the outside of the elastic load-bearing component. Wear-resistant strips are fixedly provided on the four sides of the outer sheath, and a warning strip that is fixedly connected to the outer wall of the outer sheath is embedded inside the wear-resistant strips.

[0010] Furthermore, the cross-section of the elastic load-bearing member is wavy, with the crest of the upper elastic load-bearing member and the trough of the lower elastic load-bearing member forming a receiving space, the insulating outer skin being located within this receiving space, and the buffer filling layer filling the space between the elastic load-bearing member and the insulating outer skin.

[0011] Furthermore, the trough of the upper elastic bearing member and the crest of the lower elastic bearing member are respectively provided with arc-shaped grooves. The upper arc-shaped groove and the lower arc-shaped groove are aligned to form a circular groove, and a tensile strip is fixed in the circular groove.

[0012] Furthermore, the wear-resistant protective strip and the warning strip have a striking color contrast.

[0013] Furthermore, an insulating filler layer is provided between the outer wall of the elastic load-bearing member and the inner wall of the conductor.

[0014] Furthermore, the cross-section of the wear-resistant strip is an arc-shaped structure.

[0015] Furthermore, the two elastic load-bearing components are bonded together as one unit through a hot pressing process.

[0016] This utility model has the following beneficial effects:

[0017] This utility model forms an integral load-bearing structure by fixing two elastic load-bearing members symmetrically arranged on the upper and lower sides of the conductor and filling a buffer filling layer between them and the insulation sheath. This structure can effectively disperse and buffer the external pressure or impact force, prevent the conductor insulation layer from being crushed, thereby protecting the internal conductor and enhancing the mechanical protection capability and service life of the cable.

[0018] This invention improves the wear resistance of the cable's outer layer by using a wear-resistant protective strip, reducing damage caused by daily friction. When the wear-resistant protective strip becomes thinner or even breaks due to long-term use or excessive wear, the embedded warning strip will be exposed, providing a clear and intuitive visual warning signal, thus prompting timely maintenance or replacement of the cable, significantly improving the safety and maintainability of equipment operation.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0022] Figure 2 This is a diagram showing the overall layered structure of this utility model.

[0023] Figure 3 This is a partial structural schematic diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the elastic load-bearing component structure of this utility model;

[0025] Figure 5 This is a front structural diagram of the present invention;

[0026] The attached diagram lists the components represented by each number as follows:

[0027] In the diagram: 1. Conductor; 101. Insulating outer sheath; 2. Buffer filling layer; 3. Elastic load-bearing component; 301. Arc groove; 4. Insulating filling layer; 5. Outer sheath; 6. Wear-resistant protective strip; 7. Warning strip; 8. Tensile strip. Detailed Implementation

[0028] 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.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Please see Figure 1 - Figure 5 As shown, this utility model is a composite insulated flat cable, including at least two parallel conductors 1, and the conductors 1 are covered with an insulating outer sheath 101. It also includes: two elastic load-bearing members 3, symmetrically arranged on the upper and lower sides of the conductors 1, the two elastic load-bearing members 3 are fixedly connected to form an integral load-bearing structure, and a buffer filling layer 2 is filled between the elastic load-bearing members 3 and the insulating outer sheath 101; an outer sheath 5, arranged on the outside of the elastic load-bearing members 3, and wear-resistant protective strips 6 are fixedly provided on the four sides of the outer sheath 5, and a warning strip 7 fixedly connected to the outer wall of the outer sheath 5 is embedded inside the wear-resistant protective strips 6.

[0031] This embodiment provides a composite insulated flat cable. The conductor 1 is used to transmit electrical energy or signals. The elastic load-bearing component 3 is made of thermoplastic composite material (such as polypropylene PP, polyamide PA or thermoplastic polyurethane TPU) mixed with reinforcing fibers (such as glass fiber or carbon fiber). After the two elastic load-bearing components 3 form an integral load-bearing structure, they can absorb external tensile or compressive stress through elastic deformation, protecting the internal conductor from mechanical damage. The buffer filling layer 2 is made of foamed polymer material (such as foamed PE, foamed EVA), which further enhances the impact resistance of the cable. The outer sheath 5 is the outermost protective structure of the cable and is made of polyvinyl chloride nitrile composite. The wear-resistant strip 6 can reduce the wear of the cable when it rubs against external objects. When the wear-resistant strip 6 wears down to the point that the warning strip 7 is exposed, it is used to remind the staff to perform maintenance.

[0032] Among them, the cross-section of the elastic bearing member 3 is wavy. The crest of the upper elastic bearing member 3 and the trough of the lower elastic bearing member 3 form a receiving space. The insulating sheath 101 is located in the receiving space. The buffer filling layer 2 is filled between the elastic bearing member 3 and the insulating sheath 101. When the cable is subjected to compression, impact or pressure in the vertical direction (such as being crushed by heavy objects or squeezed by equipment), the wavy peaks and valleys can undergo elastic deformation, thereby absorbing and buffering huge external mechanical stress. The crest of the upper elastic bearing member 3 and the trough of the lower elastic bearing member 3 naturally form a series of receiving spaces, so that each conductor 1 is placed in a different receiving space, which is used to separate each insulating sheath 101 and prevent wear between the insulating sheaths 101.

[0033] Among them, the trough of the upper elastic bearing member 3 and the crest of the lower elastic bearing member 3 are respectively provided with arc-shaped grooves 301. The upper arc-shaped groove 301 and the lower arc-shaped groove 301 are aligned to form a circular groove. A tensile strip 8 is fixed in the circular groove. The tensile strip 8 is an aramid fiber rope or steel wire, which can significantly improve the axial tensile strength of the cable and prevent the conductor 1 from breaking due to tensile stress.

[0034] Among them, the wear-resistant strip 6 and the warning strip 7 have a striking color contrast. The wear-resistant strip 6 is made of black wear-resistant rubber, while the warning strip 7 is made of yellow fluorescent polymer. The color contrast between the wear-resistant strip 6 and the warning strip 7 makes it easy to spot when the wear-resistant strip 6 is worn out, facilitating timely maintenance and replacement.

[0035] Among them, an insulating filler layer 4 is filled between the outer wall of the elastic bearing member 3 and the inner wall of the conductor 1. The insulating filler layer 4 can be made of cross-linked polyethylene or ethylene propylene rubber and other insulating materials. Its function is to fill the gap between the elastic bearing member 3 and the conductor 1 and enhance the insulation performance of the cable.

[0036] Among them, the cross-section of the wear-resistant guard strip 6 is an arc-shaped structure.

[0037] Among them, the two elastic load-bearing components 3 are bonded together by hot pressing. The parameters of the hot pressing process are: temperature controlled at 150°C to 200°C, pressure maintained at 0.5 MPa to 1.5 MPa, and hot pressing time of 30 seconds to 120 seconds. Under these conditions, the thermoplastic materials of the contact surfaces of the two elastic load-bearing components (3) melt and penetrate each other. After cooling, they solidify to form a strong integrated connection, which can avoid the aging and falling off problems that may exist in traditional adhesive bonding and improve the connection strength and durability of the elastic load-bearing components 3.

[0038] It is understandable that the overall load-bearing structure formed by the two elastic load-bearing members 3 can effectively disperse external pressure and impact, avoid the insulation layer from being crushed or damaged, and protect the internal conductor; at the same time, the wear-resistant strip effectively improves the wear resistance of the cable surface, and the embedded warning strip can promptly remind maintenance or replacement when the wear-resistant strip is damaged.

[0039] A specific application of the operation process of this embodiment is as follows: When the cable is in use, if it rubs against the outside, the wear-resistant protective strip 6 on the outside will bear the friction loss. When the wear-resistant protective strip 6 is damaged due to long-term friction, the warning strip 7 will be exposed from inside the wear-resistant protective strip 6 to the outside. By forming a sharp contrast with the wear-resistant protective strip 6, the staff will be prompted to maintain or replace the damaged part, which will greatly improve the safety and maintainability of the equipment operation.

[0040] During cable laying and use, when subjected to pressure in the vertical direction, the corrugated elastic bearing component 3 will undergo elastic deformation, working together with the internal buffer filling layer 2 to absorb and disperse the pressure, effectively preventing the conductor 1 from being damaged by pressure.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A composite flat cable comprising at least two conductors (1) arranged in parallel, and an insulating outer covering (101) covering the conductors (1) externally, characterized in that, Also includes: Two elastic load-bearing components (3) are symmetrically arranged on the upper and lower sides of the conductor (1). The two elastic load-bearing components (3) are fixedly connected to form an integral load-bearing structure. A buffer filling layer (2) is filled between the elastic load-bearing components (3) and the insulating outer skin (101). The outer sheath (5) is set on the outside of the elastic bearing member (3). Wear-resistant strips (6) are fixed on the four sides of the outer sheath (5), and a warning strip (7) is embedded inside the wear-resistant strip (6) and fixed to the outer wall of the outer sheath (5).

2. The composite flat cable of claim 1, wherein: The cross-section of the elastic support member (3) is wavy. The crest of the upper elastic support member (3) and the trough of the lower elastic support member (3) form a receiving space. The insulating outer skin (101) is located in the receiving space. The buffer filling layer (2) is filled between the elastic support member (3) and the insulating outer skin (101).

3. The composite flat cable of claim 1, wherein: The trough of the upper elastic bearing member (3) and the crest of the lower elastic bearing member (3) are respectively provided with arc-shaped grooves (301). The upper arc-shaped groove (301) and the lower arc-shaped groove (301) are aligned to form a circular groove, and a tensile strip (8) is fixed in the circular groove.

4. The composite flat cable of claim 1, wherein: The wear-resistant protective strip (6) and the warning strip (7) have a striking color contrast.

5. The composite flat cable of claim 1, wherein: An insulating filler layer (4) is filled between the outer wall of the elastic load-bearing member (3) and the inner wall of the conductor (1).

6. The composite flat cable of claim 1, wherein: The cross-section of the wear-resistant protective strip (6) is an arc-shaped structure.

7. The composite flat cable of claim 1, wherein: The two elastic load-bearing components (3) are bonded together by hot pressing.

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