Environment-friendly flame-retardant cable

Abstract

The invention provides an environment-friendly flame-retardant cable, which belongs to the technical field of cables, and comprises a cable main body and a cable joint, and a conductor at the connecting end of the cable main body is quantitatively exposed; the cable joint comprises a connecting seat which sleeves a cable main body and is provided with a fixing assembly; the outer joint is arranged on the connecting seat; and the profiling core body section is provided with a connecting groove. According to the environment-friendly flame-retardant cable, the profiling core body section is spliced between the outer joint and the cable main body, and the connection part of the cable main body and the cable joint is converted into an extension unit of the cable main body, so that the flame-retardant performance of the connection part of the cable main body and the cable joint and the consistency of the flame-retardant performance of the cable main body are improved; the safety and reliability of the power transmission system are effectively improved, the overall structure is convenient to install, and the quality is stable and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to an environmentally friendly flame-retardant cable. Background Art

[0002] Environmentally friendly flame retardant cable is a cable with high efficiency flame retardant and low smoke halogen-free properties, designed to improve the safety and reliability of power transmission systems, reduce fire risks and reduce harm to the environment.

[0003] At present, the improvement of flame retardant performance of environmentally friendly flame retardant cables mainly focuses on the improvement and optimization of materials and the design of structures, while ignoring the consistency of flame retardant performance between the joint part and the cable body, making the connection between the joint part and the cable body a weak link in fire. The flame retardant ability of the existing connection between the joint part and the cable body mainly depends on the joint shell of flame retardant material or the addition of a flame retardant layer on the shell. Once the shell or the flame retardant layer is damaged, the flame retardant ability of the connection is directly lost or seriously reduced, which in turn affects the safety and reliability of the power transmission system. Summary of the invention

[0004] The present invention provides an environmentally friendly flame-retardant cable to solve the problem in the related art that the flame-retardant ability of the connection between the cable body and the cable connector is low and is limited by the cable connector shell or the flame-retardant layer on the shell. Once the connector 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] The present invention provides an environmentally friendly flame-retardant cable, which comprises a cable body, wherein the conductor at the connection end of the cable body is quantitatively exposed; a cable connector connected to the connection end; the cable connector comprises: a connection seat which is sleeved on the cable body and is equipped with a fixing component; the connection seat is fastened to the cable body through the fixing component, and an external connector is installed on the connection seat, wherein the external connector, the connection seat and the cable body are firmly connected together and form a stable sealed space; a contoured core segment which is slidably connected to the external connector is arranged in the sealed space, a connection groove is provided on the contoured core segment, a connecting component is installed in the connecting groove, and the quantitatively exposed conductor is inserted into the connecting groove and The connecting assembly is connected to the external connector, and the contoured core segment is spliced ​​between the external connector and the cable body, so that the connection between the cable body and the cable connector is converted into an extension unit of the cable body. A clamping assembly is arranged between the external connector and the contoured core segment, and the connecting assembly includes a connecting clamp and a limiting pressing member that is wedge-matched with the connecting clamp. During the installation process, the conductor is first inserted into the connecting groove and located in the clamping area of ​​the connecting clamp, and then is continuously pushed to the clamping assembly along the direction of the conductor insertion to limit the connection between the external connector and the contoured core segment. During this process, the connecting clamp and the limiting pressing member are wedge-matched to automatically clamp the conductor, and finally the connecting seat and the external connector are fixedly connected together.

[0006] In one possible implementation, the external connector includes a connector with an installation limit groove, the contoured core segment includes an intermediate body and an extension sleeve, the extension sleeve is slidably connected to the connector and covers the cable body, and a compression seal is installed at the end of the extension sleeve, the compression seal seal seals the extension sleeve and the cable body, the snap-in assembly is located between the extension sleeve and the connector, the limit clamping piece is located in the installation limit groove and is fixedly installed on the connector, and the limit clamping piece is slidably connected to the contoured core segment. During the installation process, the extension sleeve is pulled out to a preset position. At this time, the connecting clamp is in a relaxed state, and then the conductor can be inserted and pushed continuously until the snap-in assembly connects the extension sleeve and the connector together.

[0007] In one possible implementation, the connecting seat includes a sliding connecting sleeve rotatably connected to a threaded connecting sleeve, the threaded connecting sleeve is threadedly connected to the external joint, and the fixing assembly includes symmetrically arranged fixed clamps, a limiting member that enables the fixed clamps to initially clamp the cable body by limiting, and a fastener that enables the fixed clamps to stably clamp the cable body. During the process of threaded connection between the threaded connecting sleeve and the external joint, the fixed clamps initially clamp the cable body, so that the cable body generates potential energy for the movement of the external joint. After the connection is completed, the fastener enables the fixed clamps to stably clamp the fixed cable body.

[0008] In one possible implementation, the limiting member includes a connecting ring fixedly connected to a plurality of connecting rods, the ends of the connecting rods are wedge-shaped structures, and wedge-shaped areas are provided on the fixed clamping member, and the wedge-shaped areas correspond to the wedge-shaped structures one by one. The wedge-shaped structure at the end of the connecting rod cooperates with the wedge-shaped area on the fixed clamping member, so that the fixed clamping member clamps and fixes the cable body.

[0009] In one possible implementation, the snap-on assembly includes a first annular protrusion and a second annular protrusion, at least one of the first annular protrusion and the second annular protrusion will undergo elastic deformation when subjected to force, the first annular protrusion is fixedly mounted on the external connector, 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 moves past the first annular protrusion and then moves past the first annular protrusion under the limit of the first annular protrusion, so that the external connector and the contoured core segment are limitedly connected together.

[0010] In a possible implementation, the connecting clamping member includes two arc-shaped bodies arranged opposite to each other, a wedge-shaped body is arranged on the arc-shaped body, and the wedge-shaped body is wedge-matched with the limiting pressing member.

[0011] The above 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 environmentally friendly flame-retardant cable provided by an embodiment of the present invention, the contoured core segment is spliced ​​between the external connector and the cable body, and the connection between the cable body and the cable connector is converted into an extension unit of the cable body, thereby improving the consistency of the flame retardant performance of the connection between the cable body and the cable connector and the flame retardant performance of the cable body, and effectively improving the safety and reliability of the power transmission system. During the installation process, after the conductor is inserted into the clamping area, the cable body continues to feed until the clamping assembly preliminarily connects the contoured core segment with the external connector, and the connecting assembly automatically connects with the conductor and clamps and fixes the conductor, and then the connecting seat is fixedly connected with the external connector. The entire connection process is convenient and fast, and the connection quality is stable and reliable, which is conducive to further improving the safety and reliability of the power transmission system.

[0013] 2. According to an environmentally friendly flame-retardant cable provided by an embodiment of the present invention, during the process of threaded connection between the external connector and the connecting seat, the fixing component automatically clamps and fixes the cable body preliminarily, so that the cable body generates potential energy for the movement of the external connector, which to a certain extent helps the conductor to be fully inserted into the connecting groove and maintain a stable connection state during the entire connection process. After the external connector and the connecting seat are fixedly connected together, the fixing clamp is further firmly clamped and fixed by the fastener, thereby further improving the stability of the overall structure and thereby improving the safety and reliability of the power transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The invention is a schematic structural diagram of a cable connector and a partial cable body of an environmentally friendly flame-retardant cable provided by an embodiment of the present invention.

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

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

[0017] Figure 4 The present invention is a schematic cross-sectional view of a cable connector of 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 It is a structural schematic diagram of a position limiting and pressing member of an environmentally friendly flame-retardant cable provided by an embodiment of the present invention.

[0020] Figure 7 The invention is a schematic structural diagram of a position limiting member of an environmentally friendly flame-retardant cable provided in an embodiment of the invention.

[0021] In the figure: 1. cable body; 2. conductor; 3. cable connector; 31. fixing assembly; 311. fixing clamp; 312. limiting member; 3121. connecting rod; 3122. connecting ring; 313. fastener; 32. connecting seat; 321. threaded connecting sleeve; 322. sliding connecting sleeve; 33. external joint; 331. installation limiting groove; 332. connecting body; 34. contoured core segment; 341. intermediate body; 342. extension sleeve; 35. connecting groove; 36. connecting assembly; 361. connecting clamp; 3611. arc body; 3612. wedge-shaped body; 362. limiting pressing member; 37. clamping assembly; 371. first annular protrusion; 372. second annular protrusion; 38. compression seal one; 39. compression seal two. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention 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 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 improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 An environmentally friendly flame-retardant cable comprises a cable body 1 and a cable connector 3. The conductor 2 at the end of the cable body 1 is quantitatively exposed. The cable connector 3 comprises a connection seat 32 with a fixing component 31 installed, and an external connector 33 threadedly connected to the connection seat 32. The connection seat 32 is firmly connected to the cable body 1 through the fixing component 31. The external connector 33 installed on the connection seat 32, the external connector 33, the connection seat 32 and the cable body 1 are firmly connected together to form a stable sealed space. A contoured core segment 34 is arranged in the sealed space. A connection groove 35 is provided on the contoured core segment 34. A connecting component 36 is installed, a quantitative exposed conductor 2 is inserted into the connecting groove 35 and connected to the external connector 33 through the connecting component 36, and the contoured core segment 34 is spliced ​​between the external connector 33 and the cable body 1, so that the connection between the cable body 1 and the cable connector 3 is converted into an extension unit of the cable body 1. The flame retardant performance of the extension unit is highly consistent with that 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. Among them, a flame retardant layer is provided on the external connector 33 and the connecting seat 32, which further improves the flame retardant performance of the connection.

[0024] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The profiling core segment 34 is slidably connected to the external connector 33, and a clamping assembly 37 is provided between the external connector 33 and the profiling core segment 34. The connecting assembly 36 includes a connecting clamp 361 and a limiting pressing member 362. The connecting clamp 361 is elastically installed on the profiling core segment 34 along the radial direction of the conductor 2, and the limiting pressing member 362 is fixedly installed on the external connector 33 and is slidably connected to the profiling core segment 34. Figure 6 As shown, the connecting clamp 361 includes two arc-shaped bodies 3611 arranged opposite to each other, and a wedge-shaped body 3612 is arranged on the arc-shaped body 3611. The wedge-shaped body 3612 cooperates with the limiting and pressing member 362 in a wedge shape. During the installation process, the connecting seat 32 is pre-set on the cable body 1, and then the conductor 2 is inserted into the connecting groove 35 and located in the clamping area of ​​the connecting clamp 361. Then, the cable body 1 is pushed along the insertion direction of the conductor 2, so that the contoured core segment 34 moves toward the external connector 33 until the clamping assembly 37 limits the external connector 33 and the contoured core segment 34 to be connected together. In this process, the limiting and pressing member 362 automatically limits and presses the connecting clamp 361 on the conductor during the movement of the contoured core segment 34. 2 is preliminarily clamped and fixed, and then the connecting seat 32 and the external connector 33 are threaded together, so that the connecting clamp 361 can further compress the conductor 2 on the one hand, and the profiling core segment 34 can be firmly pressed and fixed between the external connector 33 and the cable body 1 on the other hand, so that the external connector 33, the profiling core segment 34 and the cable body 1 are firmly spliced ​​together, which is conducive to further improving the safety and reliability of the power transmission system. Among them, the left and right end surfaces of the profiling core segment 34 are both provided with compression seals 39 near the edges, and the connection between the profiling core segment 34 and the external connector 33 and the connection between the profiling core segment 34 and the cable body 1 form a seal, which further improves the stability and reliability of the overall structure.

[0025] See also Figure 2 , Figure 4 and Figure 5 The external connector 33 includes a connector 332 with a mounting limit groove 331 on the right end face, and the contoured core segment 34 includes an intermediate body 341 and an extension sleeve 342. The extension sleeve 342 is slidably connected to the connector 332 and covers the cable body 1, and a compression seal 38 is installed on the right end face of the extension sleeve 342. The compression seal 38 makes the extension sleeve 342 and the cable body 1 sealed. 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, and the sealing area is staggered from the connection between the contoured core segment 34 and the cable body 1, which is beneficial to improve the sealing performance of the overall structure to a certain extent.

[0026] See also Figure 2 , Figure 4 and Figure 5 The clamping assembly 37 includes a first annular protrusion 371 and a second annular protrusion 372, at least one of which can undergo elastic deformation, the first annular protrusion 371 is fixedly installed on the connecting body 332 and is located in the installation limit groove 331, the second annular protrusion 372 is fixedly installed on the extension sleeve 342, and the contoured core segment 34 moves along the insertion direction of the conductor 2, and the second annular protrusion 372 thereon passes through the first annular protrusion 371 under the action of the insertion force, and then the first annular protrusion 371 limits the second annular protrusion 372, so that the external joint 33 and the contoured core segment 34 are limited and connected together. At this time, without being subjected to external force, the external joint 33 and the contoured core segment 34 are in a stably connected state, and the overall structure is simple and easy to operate.

[0027] See also Figure 2 , Figure 4 , Figure 5 and Figure 7 The connection seat 32 includes a sliding connection sleeve 322 rotatably connected to a threaded connection sleeve 321, the threaded connection sleeve 321 is threadedly connected to the connection body 332, the fixing assembly 31 includes a symmetrically arranged fixing clamp 311, a limiting member 312 that enables the fixing clamp 311 to initially clamp the cable body 1 through limiting, and a fastener 313 that enables the fixing clamp 311 to stably clamp the cable body 1, the limiting member 312 is axially slidably connected to the sliding connection sleeve 322, and during the process of threaded connection between the threaded connection sleeve 321 and the external joint 33, the limiting member 31 2 moves under the limit of the connecting body 332 and cooperates with the fixed clamping piece 311 in a wedge shape, so that the fixed clamping piece 311 initially clamps the cable body 1. At this time, with the relative feeding of the sliding connection sleeve 322 and the connecting body 332, the cable body 1 generates potential energy for the movement of the external 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 during the entire connection process. After the connection is completed, the fastener 313 enables the fixed clamping piece 311 to stably clamp and fix the cable body 1, further improving the stability of the overall structure.

[0028] See also 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, and the fixed clamping members 311 are provided with wedge-shaped areas, which correspond one to one with the wedge-shaped structures. During the process of 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 the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An environmentally friendly flame-retardant cable, characterized in that: It comprises a cable body (1), wherein the conductor (2) at the connection end of the cable body (1) is quantitatively exposed; A cable connector (3) connected to the connection end; The cable connector (3) comprises: a connection seat (32) sleeved on the cable body (1) and equipped with a fixing assembly (31); the connection seat (32) is fixedly connected to the cable body (1) via the fixing assembly (31); An external connector (33) is mounted on the connection seat (32), wherein the external connector (33), the connection seat (32) and the cable body (1) are firmly connected together and form a stable sealed space; The sealed space is provided with a contoured core segment (34) slidably connected to the external joint (33), a connecting groove (35) is provided on the contoured core segment (34), and a connecting component (36) is installed in the connecting groove (35); A quantitative exposed conductor (2) is inserted into a connection groove (35) and connected to an external connector (33) via a connecting assembly (36); a contoured core segment (34) is spliced ​​between the external connector (33) and the cable body (1), so that the connection between the cable body (1) and the cable connector (3) is converted into an extension unit of the cable body (1); The communication component (36) comprises a communication clamping piece (361) and a position limiting pressing piece (362) wedge-matched with the communication clamping piece (361); A clamping assembly (37) is provided between the external joint (33) and the contoured core segment (34); During the installation process, the conductor (2) is first inserted into the connection groove (35) and located in the clamping area of ​​the connecting clamp (361), and then it is pushed to the clamping assembly (37) along the insertion direction of the conductor (2) to limit the connection of the external connector (33) and the contoured core segment (34). During this process, the connecting clamp (361) and the limit pressing member (362) are wedge-shaped to automatically clamp the conductor (2), and finally the connecting seat (32) and the external connector (33) are fixedly connected together.

2. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: The external connector (33) comprises a connecting body (332) provided with an installation limit groove (331); the contoured core segment (34) comprises 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) enables the extension sleeve (342) to be sealed and connected to the cable body (1); the clamping assembly (37) is located at the extension sleeve (342) ) and the connecting body (332), the limiting pressing member (362) is located in the installation limiting groove (331) and is fixedly installed on the connecting body (332), and the limiting pressing member (362) is slidably connected to the contoured core segment (34). During the installation process, the extension sleeve (342) is pulled outward to a preset position. At this time, the connecting clamp (361) is in a relaxed state, and then the conductor (2) can be inserted and pushed continuously until the clamping 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 connection seat (32) comprises a sliding connection sleeve (322) rotatably connected to a threaded connection sleeve (321), the threaded connection sleeve (321) being threadedly connected to an external joint (33), and the fixing assembly (31) comprising symmetrically arranged fixing clamps (311), a limiting member (312) which enables the fixing clamps (311) to initially clamp the cable body (1) by limiting the position, and a fastener (313) which enables the fixing clamps (311) to stably clamp the cable body (1). During the process of threaded connection between the threaded connection sleeve (321) and the external joint (33), the fixing clamps (311) initially clamp the cable body (1), so that the cable body (1) generates potential energy for the movement of the external joint (33), and after the connection is completed, the fastener (313) enables the fixing clamps (311) to stably clamp and fix the cable body (1).

4. The environmentally friendly flame-retardant cable according to claim 3, characterized in that: The limiting member (312) comprises a connecting ring (3122) fixedly connected to a plurality of connecting rods (3121), the ends of the connecting rods (3121) are wedge-shaped structures, and the fixed clamping member (311) is provided with a wedge-shaped area, and the wedge-shaped area corresponds to the wedge-shaped structure one by one. 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).

5. An environmentally friendly flame-retardant cable according to claim 1 or 2, characterized in that: The clamping assembly (37) comprises a first annular protrusion (371) and a second annular protrusion (372), at least one of which will undergo elastic deformation when subjected to force, the first annular protrusion (371) is fixedly mounted on the external connector (33), the second annular protrusion (372) is fixedly mounted on the contoured core segment (34), the contoured core segment (34) moves along the direction in which the conductor (2) is inserted, and the second annular protrusion (372) thereon first moves toward the first annular protrusion (371) and then moves toward the first annular protrusion (371), so that the external connector (33) and the contoured core segment (34) are limitedly connected together.

6. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: The connecting clamping member (361) comprises two arc-shaped bodies (3611) arranged opposite to each other, a wedge-shaped body (3612) is arranged on the arc-shaped body (3611), and the wedge-shaped body (3612) is wedge-matched with the limiting pressing member (362).

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