A computer instrument cable for intrinsically safe circuits

Abstract

The utility model belongs to cable technical field, concretely is a kind of computer instrument cable for intrinsically safe circuit, cable has multiple wires, multiple the support sleeve between wire is provided, the support sleeve outside is formed with the V-shaped groove that multiple wires are evenly distributed in circumference, the positioning strip that wire is wrapped is adjacently formed with the opening one groove between the V-shaped groove of setting, the utility model is evenly dispersed in cable by support sleeve and positioning strip with multiple wires, make each wire have independent space, reduce mutual interference;Between adjacent wire, one groove and two grooves are set, hollow design is used between support sleeve and center steel wire simultaneously, when cable is pressed, provide active space for wire, and make all buffer cavity cooperate to unload, realize buffering protection effect;Steel wire set in the center of cable can evenly bear pressure in each direction, both guarantee cable bending flexible, avoid bending, and give consideration to the strength and flexibility of structure.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, and in particular relates to a computer instrument cable for intrinsically safe circuits. Background Technology

[0002] Intrinsically safe computer instrument cables are special cables designed for use in hazardous locations such as flammable and explosive environments. Their core principle is to limit the energy level in the circuit, ensuring that electrical sparks or thermal effects generated during normal operation or fault conditions are insufficient to ignite surrounding flammable gases or dust. These cables typically employ low capacitance and low inductance designs, combined with high-quality insulation and shielding materials, to effectively suppress electromagnetic interference and ensure the stability and accuracy of signal transmission.

[0003] Computer instrument cables contain multiple conductors. The current method is to twist the conductors together and then put an outer sheath to combine the multiple conductors, which takes up less space. However, in actual use, it has been found that when the conductors are crushed by heavy objects, the internal buffer space causes the force to be directly applied to the insulation layer and core of the conductors. The insulation layer is crushed and damaged, and the conductors are exposed, which can easily cause short circuits.

[0004] To address the aforementioned issues, this application proposes an intrinsically safe computer instrument cable for circuits. Utility Model Content

[0005] The purpose of this invention is to provide a computer instrument cable for intrinsically safe circuits, which 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 an intrinsically safe computer instrument cable. The cable contains multiple conductors, with a support sleeve between the conductors. The support sleeve has V-shaped grooves that evenly distribute the conductors around its circumference. A positioning strip is fitted to the outside of the support sleeve to wrap the conductors. An open groove (number one) is formed between adjacent V-shaped grooves. An open groove (number two) in the positioning strip corresponds to the first groove, forming a buffer cavity. The buffer cavity is located between two adjacent conductors. Both the support sleeve and the positioning strip are formed by extrusion molding.

[0008] Furthermore, the outer side of the V-shaped groove near the circumference is in contact with the surface of the wire, and the width of the inner side gradually decreases.

[0009] Furthermore, the positioning strip has a number of corresponding wires distributed circumferentially.

[0010] Furthermore, the support sleeve has an inner sleeve formed inside, and the inner sleeve and the support sleeve are supported by circumferentially arranged support ribs. Both the inner sleeve and the support sleeve have an embedding groove on the same side.

[0011] Furthermore, a buffer cavity is formed between the support sleeve, the inner sleeve, and the support rib, which is directly opposite to the radial direction of the conductor.

[0012] Furthermore, a shielding layer is provided on the outside of the positioning strip. The shielding layer is woven from metal wires and has an outer sheath formed on the outside.

[0013] Furthermore, a steel wire located inside the inner sleeve is installed in the support sleeve through an embedded groove.

[0014] This utility model has the following beneficial effects:

[0015] This utility model uses a support sleeve and positioning strip to evenly distribute multiple wires in the cable, and each wire has its own independent space, reducing interference between adjacent wires;

[0016] This utility model provides space for the conductors to move within the cable when it is compressed by setting the No. 1 and No. 2 slots between two adjacent conductors and the hollowing out between the support sleeve and the steel wire. Moreover, all the buffer cavities at the compressed position will simultaneously relieve the force, thereby achieving the purpose of buffering and protection.

[0017] This invention utilizes a steel wire positioned at the center of the cable. This steel wire can evenly withstand pressure from any direction. The central placement allows the cable to bend more flexibly without breaking, thus balancing flexibility and strength.

[0018] 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

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure in a side view section;

[0022] Figure 3 This is a schematic diagram of the support sleeve structure;

[0023] Figure 4This is a schematic diagram of the positioning strip.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] In the diagram: 1. Support sleeve; 11. V-groove; 12. Groove No. 1; 13. Inner sleeve; 14. Support rib; 15. Embedded groove; 2. Wire; 3. Positioning strip; 31. Groove No. 2; 4. Shielding layer; 5. Outer sheath; 6. Steel wire. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] Please see Figures 1-4 As shown, this utility model is a computer instrument cable for intrinsically safe circuits. The cable has multiple conductors 2 inside, and a support sleeve 1 is provided between the multiple conductors 2. The support sleeve 1 has V-shaped grooves 11 formed on the outside, which evenly distribute the multiple conductors 2 around their circumference. A positioning strip 3 is attached to the outside of the support sleeve 1 to wrap the conductors 2. An open first groove 12 is formed between adjacent V-shaped grooves 11. The positioning strip 3 has an open second groove 31 and the first groove 12 forming a buffer cavity. The buffer cavity is located between two adjacent conductors 2. The support sleeve 1 and the positioning strip 3 are both formed by extrusion molding.

[0029] Furthermore, such as Figure 2 As shown, the outer side of the V-groove 11 near the circumference is in contact with the surface of the conductor 2, and the width of the inner side gradually decreases. When subjected to radial pressure, the conductor 2 will be squeezed inward towards the V-groove 11. At this time, the toughness of the support sleeve 1 will increase the angle opening of the V-groove 11, and at the same time form a reverse resistance force to achieve the purpose of buffering. Meanwhile, each conductor is wrapped with an independent positioning strip, realizing the independent separation and precise positioning of each conductor, further improving the symmetry and stability of the cable structure.

[0030] Furthermore, the positioning strip 3 has multiple corresponding wires 2 distributed in a circle. The wires 2 are attached to the support sleeve 1 and the outside of the wires 2. After all the circumferentially distributed positioning strips 3 are combined, the outside forms a complete circle to ensure the roundness of the cable.

[0031] Furthermore, the support sleeve 1 has an inner sleeve 13 formed inside, and the inner sleeve 13 and the support sleeve 1 are supported by circumferentially arranged support ribs 14. The inner sleeve 13 and the support sleeve 1 are both provided with an embedding groove 15 on the same side. Through the cooperation between the inner sleeve 13, the support ribs 14 and the embedding grooves 15, a buffer cavity is formed inside the cable. At the same time, the support ribs 14 are set in a circumferential arrangement to prevent internal collapse and improve the toughness and durability of the cable.

[0032] Furthermore, a buffer cavity is formed between the support sleeve 1, the inner sleeve 13, and the support rib 14, which is radially opposite to the conductor 2. This buffer cavity provides radial pressure-resistant buffer space for the conductor 2, effectively protecting the conductor 2 from damage caused by external radial extrusion force.

[0033] Furthermore, a shielding layer 4 is provided on the outside of the positioning strip 3. The shielding layer 4 is made of metal wire braiding, which provides the ability to resist external electromagnetic interference. An outer sheath 5 is formed on the outside of the shielding layer 4. The outer sheath serves as the final protective layer, giving the cable protective properties such as wear resistance, corrosion resistance, and moisture resistance.

[0034] Furthermore, a steel wire 6 is installed in the inner sleeve 13 through the embedded groove 15 in the support sleeve 1. By installing the steel wire 6 in the inner sleeve 13, a core tensile element is provided for the cable, which significantly enhances the overall longitudinal tensile strength of the cable and is suitable for installation environments that require tensile force.

[0035] Understandably, this utility model uses a support sleeve and positioning strip to evenly distribute multiple conductors in the cable, giving each conductor an independent space and reducing mutual interference. A first and second slot are set between adjacent conductors, and a hollow design is used between the support sleeve and the central steel wire. When the cable is under pressure, this provides space for the conductors to move and allows all buffer cavities to work together to relieve pressure, achieving a buffering and protective effect. The steel wire in the center of the cable can evenly bear pressure in all directions, ensuring the cable can bend flexibly while avoiding bending, thus balancing the strength and flexibility of the structure.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., 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, the 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.

[0037] 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 computer instrument cable for intrinsically safe circuits, comprising multiple conductors (2) therein, characterized in that: A support sleeve (1) is provided between the multiple wires (2). A V-shaped groove (11) is formed on the outside of the support sleeve (1) to evenly distribute the multiple wires (2) around the circumference. A positioning strip (3) is attached to the outside of the support sleeve (1) to wrap the wires (2). A first groove (12) with an opening is formed between adjacent V-shaped grooves (11). The second groove (31) with an opening and the first groove (12) in the positioning strip (3) form a buffer cavity, which is located between two adjacent wires (2). The support sleeve (1) and the positioning strip (3) are both formed by extrusion.

2. The intrinsically safe computer instrument cable according to claim 1, characterized in that: The V-groove (11) is close to the outer side of the circumference and fits against the surface of the wire (2), while the width of the inner side gradually decreases.

3. The intrinsically safe computer instrument cable according to claim 1, characterized in that: The positioning bar (3) has a number of corresponding wires (2) distributed in a circle.

4. The intrinsically safe computer instrument cable according to claim 1, characterized in that: The support sleeve (1) has an inner sleeve (13) inside. The inner sleeve (13) and the support sleeve (1) are supported by circumferentially arranged support ribs (14). The inner sleeve (13) and the support sleeve (1) are both provided with an embedding groove (15) on the same side.

5. A computer instrument cable for intrinsically safe circuits according to claim 4, characterized in that: A buffer cavity is formed between the support sleeve (1), the inner sleeve (13), and the support rib (14) in the radial direction of the conductor (2).

6. The intrinsically safe computer instrument cable according to claim 1, characterized in that: The positioning strip (3) is provided with a shielding layer (4) on the outside. The shielding layer (4) is woven from metal wire and has an outer sheath (5) formed on the outside.

7. A computer instrument cable for intrinsically safe circuits according to claim 4, characterized in that: The support sleeve (1) is fitted with a steel wire (6) located inside the inner sleeve (13) via an embedded groove (15).

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