Environment-friendly flame-retardant cable

Abstract

The application provides an environment-friendly flame-retardant cable, and belongs to the technical field of cables. The environment-friendly flame-retardant cable comprises a cable main body and a cable joint. The conductor of the connecting end of the cable main body is quantitatively exposed. The cable joint comprises a connecting seat which is sleeved on the cable main body and is provided with a fixing assembly, an outer joint which is installed on the connecting seat, and a profiled core segment which is provided with a connecting groove. The profiled core segment is spliced between the outer joint and the cable main body, the connecting position of the cable main body and the cable joint is converted into an extension unit of the cable main body, the consistency of the flame-retardant performance of the connecting position of the cable main body and the cable joint and the flame-retardant performance of the cable main body is improved, the safety and reliability of the power transmission system are effectively improved, and the overall structure is convenient to install and has stable and reliable quality.

Description

Technical Field

[0001] This invention relates to the field of cable technology, specifically to an environmentally friendly flame-retardant cable. Background Technology

[0002] Environmentally friendly flame-retardant cables are cables with high-efficiency flame retardancy and low-smoke halogen-free properties, designed to improve the safety and reliability of power transmission systems, reduce fire risks, and minimize environmental damage.

[0003] Currently, improving the flame-retardant performance of environmentally friendly flame-retardant cables mainly focuses on material improvement and structural design, while neglecting the consistency of flame-retardant performance between the joint and the cable body. This makes the connection between the joint and the cable body a weak point in a fire. The existing flame-retardant capability of the joint connection mainly relies on the flame-retardant material of the joint shell or the addition of a flame-retardant layer on the shell. Once the shell or flame-retardant layer is damaged, the connection directly loses or severely reduces its flame-retardant capability, thereby affecting the safety and reliability of the power transmission system. Summary of the Invention

[0004] This invention provides an environmentally friendly flame-retardant cable to solve the problem in related technologies where the flame-retardant capability at the connection between the cable body and the cable joint is low, limited by the flame-retardant layer on the cable joint shell, and once the joint shell or the flame-retardant layer on the shell is damaged, it will directly affect the safety and reliability of the power transmission system.

[0005] This invention provides an environmentally friendly flame-retardant cable, comprising a cable body with a pre-exposed conductor at the connection end; a cable connector connected to the connection end; the cable connector comprising: a connector seat sleeved on the cable body and equipped with a fixing component; the connector seat being securely connected to the cable body via the fixing component; an outer connector mounted on the connector seat; the outer connector, the connector seat, and the cable body being securely connected together to form a stable sealed space; a contoured core segment slidably connected to the outer connector is provided in the sealed space; a connecting groove is formed on the contoured core segment; a connecting component is installed in the connecting groove; and the pre-exposed conductor is inserted into the connecting groove. The outer connector is connected to the connecting component. The contoured core segment is spliced ​​between the outer connector and the cable body, transforming the connection between the cable body and the cable connector into an extension unit of the cable body. A snap-fit ​​component is provided between the outer connector and the contoured core segment. The connecting component includes a connecting clamp and a limiting clamping component that wedges with the connecting clamp. During installation, the conductor is first inserted into the connecting slot and located in the clamping area of ​​the connecting clamp. Then, it is pushed along the direction of conductor insertion to the snap-fit ​​component to limit and connect the outer connector and the contoured core segment together. During this process, the connecting clamp and the limiting clamp automatically clamp the conductor with a wedge fit. Finally, the connecting seat and the outer connector are fixedly connected together.

[0006] In one possible implementation, the external connector includes a connecting body with an installation limiting groove, a contoured core segment including an intermediate body and an extension sleeve, the extension sleeve being slidably connected to the connecting body and covering the cable body, and a clamping seal is installed at the end of the extension sleeve, the clamping seal sealingly connecting the extension sleeve to the cable body, a snap-fit ​​assembly being located between the extension sleeve and the connecting body, a limiting clamping member being located in the installation limiting groove and fixedly installed on the connecting body, and the limiting clamping member being slidably connected to the contoured core segment. During installation, the extension sleeve is pulled outward to a preset position, at which point the connecting clamp is in a relaxed state, and then the conductor can be inserted and continuously pushed until the snap-fit ​​assembly connects the extension sleeve and the connecting body together.

[0007] In one possible implementation, the connector includes a sliding connecting sleeve rotatably connected to a threaded connecting sleeve, the threaded connecting sleeve being threadedly connected to an external connector, and a fixing assembly including symmetrically arranged fixing clamps, a limiting member that initially clamps the cable body by limiting the fixing clamps, and a fastener that stably clamps the cable body by the fixing clamps. During the threaded connection between the threaded connecting sleeve and the external connector, the fixing clamps initially clamp the cable body, causing the cable body to generate potential energy for the external connector to move. After the connection is completed, the fastener stably clamps and fixes the cable body by the fixing clamps.

[0008] In one possible implementation, the limiting member includes a connecting ring with several connecting rods fixedly connected to it. The ends of the connecting rods are wedge-shaped structures. Each of the fixed clamping members is provided with a wedge-shaped area, and the wedge-shaped area corresponds one-to-one with the wedge-shaped structure. By cooperating with the wedge-shaped structure at the end of the connecting rod and the wedge-shaped area on the fixed clamping member, the fixed clamping member clamps and fixes the cable body.

[0009] In one possible implementation, the snap-fit ​​assembly includes a first annular protrusion and a second annular protrusion, at least one of which undergoes elastic deformation under force. The first annular protrusion is fixedly mounted on the outer connector, and the second annular protrusion is fixedly mounted on the contoured core segment. The contoured core segment moves along the direction of conductor insertion, and the second annular protrusion thereon first and then, under the limiting effect of the first annular protrusion, causes the outer connector to be limited and connected to the contoured core segment.

[0010] In one possible implementation, the connecting clamping member includes two opposing arc-shaped bodies, each with a wedge-shaped body that engages with a limiting clamping member.

[0011] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0012] 1. According to an embodiment of the present invention, an environmentally friendly flame-retardant cable is provided, in which a conformal core segment is spliced ​​between the outer connector and the cable body, transforming the connection between the cable body and the cable connector into an extension unit of the cable body. This improves the consistency between the flame-retardant performance of the connection between the cable body and the cable connector and the flame-retardant performance of the cable body, effectively enhancing the safety and reliability of the power transmission system. During installation, after the conductor is inserted into the clamping area, the cable body continues to feed until the clamping assembly initially connects the conformal core segment and the outer connector. Simultaneously, the connecting component automatically connects to the conductor and clamps and fixes the conductor, after which the connecting seat is fixedly connected to the outer connector. The entire connection process is convenient, quick, and the connection quality is stable and reliable, which is beneficial for further improving the safety and reliability of the power transmission system.

[0013] 2. According to the embodiment of the present invention, an environmentally friendly flame-retardant cable is provided in which, during the threaded connection between the external connector and the connecting seat, the fixing component automatically performs initial clamping and fixing of the cable body, so that the cable body generates potential energy for the movement of the external connector. To a certain extent, this helps the conductor to be fully inserted into the connecting groove and maintain a stable connection state throughout the connection process. After the external connector and the connecting seat are fixedly connected together, the fixing clamp is further secured by fasteners to further stabilize and fix the cable body, thereby further improving the stability of the overall structure and thus improving the safety and reliability of the power transmission system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cable joint and a portion of the main body of an environmentally friendly flame-retardant cable provided in an embodiment of the present invention.

[0015] Figure 2 This is an exploded structural diagram of a cable joint for an environmentally friendly flame-retardant cable provided in an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the connecting clamp and connecting groove of an environmentally friendly flame-retardant cable provided in an embodiment of the present invention.

[0017] Figure 4 This is a cross-sectional structural diagram of a cable joint for an environmentally friendly flame-retardant cable provided in an embodiment of the present invention.

[0018] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0019] Figure 6 This is a schematic diagram of the structure of a limiting clamping component for an environmentally friendly flame-retardant cable provided in an embodiment of the present invention.

[0020] Figure 7 This is a schematic diagram of the structure of a limiting component for an environmentally friendly flame-retardant cable provided in an embodiment of the present invention.

[0021] In the diagram: 1. Cable body; 2. Conductor; 3. Cable connector; 31. Fixing component; 311. Fixing clamp; 312. Limiting component; 3121. Connecting rod; 3122. Connecting ring; 313. Fastener; 32. Connecting seat; 321. Threaded connecting sleeve; 322. Sliding connecting sleeve; 33. External connector; 331. Mounting limiting groove; 332. Connecting body; 34. Contouring core segment; 341. Intermediate body; 342. Extension sleeve; 35. Connecting groove; 36. Connecting component; 361. Connecting clamp; 3611. Arc-shaped body; 3612. Wedge-shaped body; 362. Limiting clamping component; 37. Snap-fit ​​component; 371. First annular protrusion; 372. Second annular protrusion; 38. First clamping seal; 39. Second clamping seal. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 An environmentally friendly flame-retardant cable includes a cable body 1 and a cable connector 3. The conductor 2 at one end of the cable body 1 is partially exposed. The cable connector 3 includes a connector 32 with a fixing component 31 and an external connector 33 threadedly connected to the connector 32. The connector 32 is securely connected to the cable body 1 via the fixing component 31. The external connector 33, connector 32, and cable body 1 are securely connected together to form a stable sealed space. A contoured core segment 34 is provided within this sealed space, and a connecting groove 35 is formed on the contoured core segment 34. A connecting component 36 is installed, and a fixed amount of exposed conductor 2 is inserted into the connecting groove 35 and connected to the external connector 33 through the connecting component 36. The contoured core segment 34 is spliced ​​between the external connector 33 and the cable body 1, transforming the connection between the cable body 1 and the cable connector 3 into an extension unit of the cable body 1. The flame retardant performance of the extension unit is consistent with the height of the cable body 1, which effectively improves the flame retardant performance and risk resistance of the power transmission system, and correspondingly improves the safety and reliability of the power transmission system. Flame retardant layers are provided on both the external connector 33 and the connecting seat 32 to further improve the flame retardant performance of the connection.

[0024] See Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The contoured core segment 34 is slidably connected to the outer connector 33, and a snap-fit ​​assembly 37 is provided between the outer connector 33 and the contoured core segment 34. The connecting assembly 36 includes a connecting clamping member 361 and a limiting clamping member 362. The connecting clamping member 361 is elastically mounted on the contoured core segment 34 along the radial direction of the conductor 2, and the limiting clamping member 362 is fixedly mounted on the outer connector 33 and slidably connected to the contoured core segment 34. Figure 6 As shown, the connecting clamp 361 includes two opposing arc-shaped bodies 3611, each with a wedge-shaped body 3612. The wedge-shaped body 3612 engages with the limiting clamping member 362 in a wedge-shaped fit. During installation, the connecting seat 32 is pre-fitted onto the cable body 1. Then, the conductor 2 is inserted into the connecting groove 35 and positioned within the clamping area of ​​the connecting clamp 361. The cable body 1 is then pushed along the direction of conductor 2 insertion, causing the contoured core segment 34 to move towards the outer connector 33 until the snap-fit ​​assembly 37 limits and connects the outer connector 33 to the contoured core segment 34. During this process, the limiting clamping member 362 automatically limits and clamps the connecting clamp 361 on the conductor as the contoured core segment 34 moves. 2. After initial clamping and fixing, the connecting seat 32 and the external connector 33 are threaded together. On the one hand, the connecting clamp 361 further compresses the conductor 2, and on the other hand, the contoured core section 34 is firmly pressed and fixed between the external connector 33 and the cable body 1, so that the external connector 33, the contoured core section 34 and the cable body 1 are firmly spliced ​​together. This is conducive to further improving the safety and reliability of the power transmission system. Among them, the left and right end faces of the contoured core section 34 are provided with compression sealing parts 2 39 near the edge, forming a seal at the connection between the contoured core section 34 and the external connector 33 and the connection between the contoured core section 34 and the cable body 1, further improving the stability and reliability of the overall structure.

[0025] See Figure 2 , Figure 4 and Figure 5 The external connector 33 includes a connecting body 332 with a mounting and limiting groove 331 on its right end face. The contoured core segment 34 includes an intermediate body 341 and an extension sleeve 342. The extension sleeve 342 is slidably connected to the connecting body 332 and covers the cable body 1. A compression seal 38 is installed on the right end face of the extension sleeve 342. The compression seal 38 seals the extension sleeve 342 with the cable body 1. Figure 5 As shown, the compression seal 38 forms a sealing area between the extension sleeve 342 and the cable body 1, so that the two are sealed together. The sealing area is offset from the connection between the contour core section 34 and the cable body 1, which to a certain extent helps to improve the sealing performance of the overall structure.

[0026] See Figure 2 , Figure 4 and Figure 5 The snap-fit ​​assembly 37 includes a first annular protrusion 371 and a second annular protrusion 372. At least one of the first annular protrusion 371 and the second annular protrusion 372 can undergo elastic deformation. The first annular protrusion 371 is fixedly installed on the connector 332 and located in the installation limiting groove 331. The second annular protrusion 372 is fixedly installed on the extension sleeve 342. The contoured core segment 34 moves along the direction of conductor 2 insertion. Under the action of insertion force, the second annular protrusion 372 on it passes through the first annular protrusion 371. Then, the first annular protrusion 371 limits the second annular protrusion 372, so that the outer connector 33 and the contoured core segment 34 are limited and connected together. At this time, without external force, the outer connector 33 and the contoured core segment 34 are in a stable connection state. The overall structure is simple and easy to operate.

[0027] See Figure 2 , Figure 4 , Figure 5 and Figure 7 The connecting seat 32 includes a sliding connecting sleeve 322 rotatably connected to a threaded connecting sleeve 321. The threaded connecting sleeve 321 is threadedly connected to the connecting body 332. The fixing assembly 31 includes symmetrically arranged fixing clamps 311, a limiting member 312 that initially clamps the cable body 1 by limiting the fixing clamps 311, and a fastener 313 that stably clamps the cable body 1 by limiting the fixing clamps 311. The limiting member 312 is axially slidably connected to the sliding connecting sleeve 322. During the threaded connection between the threaded connecting sleeve 321 and the external connector 33, the limiting member 312... 2. Under the limitation of the connector 332, the cable body moves and engages with the wedge-shaped clamping member 311, so that the clamping member 311 initially clamps the cable body 1. At this time, as the sliding connecting sleeve 322 and the connector 332 are fed relative to each other, the cable body 1 generates the potential energy for the movement of the outer connector 33, which to a certain extent helps the conductor 2 to be fully inserted into the connecting groove 35 and maintain a stable connection state throughout the connection process. After the connection is completed, the fastener 313 makes the clamping member 311 stably clamp and fix the cable body 1, further improving the stability of the overall structure.

[0028] See Figure 4 , Figure 5 and Figure 7 The limiting member 312 includes a connecting ring 3122 fixedly connected to a plurality of connecting rods 3121. The ends of the connecting rods 3121 are wedge-shaped structures. The fixed clamping member 311 is provided with wedge-shaped areas, and the wedge-shaped areas correspond one-to-one with the wedge-shaped structures. During the threaded connection between the threaded connecting sleeve 321 and the connecting body 332, the connecting body 332 limits the connecting ring 3122, so that the wedge-shaped structure at the end of the connecting rod 3121 cooperates with the wedge-shaped area on the fixed clamping member 311, so that the fixed clamping member 311 clamps and fixes the cable body 1.

[0029] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An environmentally friendly flame-retardant cable, characterized in that: Includes a cable body (1), wherein the conductor (2) at the connection end of the cable body (1) is quantitatively exposed; The cable connector (3) is connected to the connection end; The cable connector (3) includes: a connector (32) sleeved on the cable body (1) and equipped with a fixing component (31), the connector (32) being fastened to the cable body (1) by the fixing component (31); An external connector (33) is installed on the connector (32). The external connector (33), the connector (32), and the cable body (1) are securely connected together and form a stable sealed space. The sealed space is provided with a contoured core section (34) that is slidably connected to the external connector (33). A connecting groove (35) is provided on the contoured core section (34), and a connecting component (36) is installed in the connecting groove (35). A quantitatively exposed conductor (2) is inserted into a connecting slot (35) and connected to an external connector (33) via a connecting component (36). A contoured core segment (34) is spliced ​​between the external connector (33) and the cable body (1), transforming the connection between the cable body (1) and the cable connector (3) into an extension unit of the cable body (1). The connecting component (36) includes a connecting clamp (361) and a limiting clamping member (362) that wedges with the connecting clamp (361); A snap-fit ​​assembly (37) is provided between the external connector (33) and the contoured core segment (34); During installation, the conductor (2) is first inserted into the connecting slot (35) and located in the clamping area of ​​the connecting clamp (361). Then, it is pushed along the direction of the conductor (2) insertion to the snap-fit ​​assembly (37) to limit and connect the outer connector (33) and the contoured core segment (34) together. During this process, the connecting clamp (361) and the limiting clamping member (362) wedge-shaped cooperation automatically clamp the conductor (2). Finally, the connecting seat (32) and the outer connector (33) are fixedly connected together.

2. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: The external connector (33) includes a connecting body (332) with an installation limiting groove (331). The contoured core segment (34) includes an intermediate body (341) and an extension sleeve (342). The extension sleeve (342) is slidably connected to the connecting body (332) and covers the cable body (1). A compression seal (38) is installed at the end of the extension sleeve (342). The compression seal (38) seals the extension sleeve (342) to the cable body (1). The snap-fit ​​assembly (37) is located on the extension sleeve (342). Between the connector (332) and the connecting body (332), the limiting clamping member (362) is located in the mounting limiting groove (331) and fixedly installed on the connecting body (332), and the limiting clamping member (362) is slidably connected to the contour core segment (34). During the installation process, the extension sleeve (342) is pulled out to the preset position. At this time, the connecting clamping member (361) is in a relaxed state. Then the conductor (2) can be inserted and continuously pushed until the snap-fit ​​assembly (37) connects the extension sleeve (342) and the connecting body (332) together.

3. An environmentally friendly flame-retardant cable according to claim 1 or 2, characterized in that: The connecting seat (32) includes a sliding connecting sleeve (322) rotatably connected to a threaded connecting sleeve (321). The threaded connecting sleeve (321) is threadedly connected to the external connector (33). The fixing component (31) includes a symmetrically arranged fixing clamp (311), a limiting member (312) that limits the fixing clamp (311) to initially clamp the cable body (1), and a fastener (313) that stabilizes the fixing clamp (311) in clamping the cable body (1). During the threaded connection between the threaded connecting sleeve (321) and the external connector (33), the fixing clamp (311) initially clamps the cable body (1), causing the cable body (1) to generate potential energy for the external connector (33) to move. After the connection is completed, the fastener (313) stabilizes the fixing clamp (311) in clamping the fixed cable body (1).

4. The environmentally friendly flame-retardant cable according to claim 3, characterized in that: The limiting member (312) includes a connecting ring (3122) fixedly connected to a plurality of connecting rods (3121). The ends of the connecting rods (3121) are wedge-shaped structures. The fixed clamping member (311) is provided with wedge-shaped areas. The wedge-shaped areas correspond one-to-one with the wedge-shaped structures. By cooperating with the wedge-shaped structures at the ends of the connecting rods (3121) and the wedge-shaped areas on the fixed clamping member (311), the fixed clamping member (311) clamps and fixes the cable body (1).

5. An environmentally friendly flame-retardant cable according to claim 1 or 2, characterized in that: The snap-fit ​​assembly (37) includes a first annular protrusion (371) and a second annular protrusion (372). At least one of the first annular protrusion (371) and the second annular protrusion (372) will undergo elastic deformation under force. The first annular protrusion (371) is fixedly installed on the outer connector (33), and the second annular protrusion (372) is fixedly installed on the contoured core segment (34). The contoured core segment (34) moves along the direction of the conductor (2) insertion. The second annular protrusion (372) on it first passes through the first annular protrusion (371) and then, under the limitation of the first annular protrusion (371), the outer connector (33) and the contoured core segment (34) are limited and connected together.

6. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: The connecting clamp (361) includes two opposing arc-shaped bodies (3611), and a wedge-shaped body (3612) is provided on the arc-shaped body (3611). The wedge-shaped body (3612) is wedge-shaped and engages with the limiting clamping member (362).

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