Silicone rubber insulation halogen-free low-smoke wire cable

Abstract

The utility model relates to a silicone rubber insulation halogen-free low-smoke wire cable which comprises a cable core, an insulation layer is wrapped outside the cable core, and a protection layer is wrapped outside the insulation layer. The insulating layer abuts against the inner wall of the protective layer, the protective layer and the insulating layer are connected through a connecting structure, the connecting structure comprises a deformable connecting block fixed on the inner side wall of the protective layer and a connecting groove formed in the insulating layer, and the connecting block can be positioned in the connecting groove. According to the application, the connection blocks of the protection layer and the connection grooves of the insulation layer are positioned and matched to realize the transverse positioning of the cable core and the protection layer, so that the cable core and the protection layer can be synchronously pulled, the connection stability of the cable core and the insulation layer is improved, the problem that the cable core is thinned and deformed due to pulling is reduced, and the stability of the conductive performance is maintained.

Description

Technical Field

[0001] The present application relates to the technical field of electric wires and cables, and in particular to a silicone rubber insulated halogen-free and low-smoke electric wire and cable. Background Art

[0002] Wires and cables are wire products used to transmit electrical energy, information and realize electromagnetic energy conversion. They can be defined as a collection of the following parts: one or more insulating cable cores, and their respective coatings, total protective layers and outer sheaths.

[0003] The existing Chinese patent with the announcement number CN203931587U discloses a fire-resistant wire and cable, including an outer sheath and at least one cable core wrapped in the outer sheath, each cable core includes a conductor and an insulating layer wrapped outside the conductor, and the outer sheath is a ceramic silicone rubber layer.

[0004] Regarding the above-mentioned related technologies, the applicant believes that some current wires and cables have unstable connections between the internal cable core and the outer covering, and are easily separated from the outer covering. When using traction equipment to pull the cable, the cable core is easily stretched and deformed, reducing its conductivity, so there is still room for improvement. Utility Model Content

[0005] In order to improve the connection stability between the cable core and the outer layer of the coating, reduce the problem of the cable core being pulled thinner and deformed, and maintain the stability of the conductive performance, the present application provides a silicone rubber insulated halogen-free and low-smoke wire and cable.

[0006] The present application provides a silicone rubber insulated halogen-free low-smoke wire and cable adopts the following technical solution:

[0007] A silicone rubber insulated halogen-free low-smoke wire and cable comprises a cable core, an insulating layer wrapped around the cable core, and a protective layer wrapped around the insulating layer; the insulating layer abuts against the inner wall of the protective layer, and the protective layer and the insulating layer are connected by a connecting structure, the connecting structure comprises a deformable connecting block fixed on the inner side wall of the protective layer and a connecting groove opened on the insulating layer, and the connecting block can be positioned in the connecting groove.

[0008] By adopting the above technical solution, the connection block of the protective layer and the connection groove of the insulating layer are positioned and matched to achieve the lateral positioning of the cable core and the protective layer, so that the cable core and the protective layer can be pulled synchronously, thereby improving the connection stability between the cable core and the insulating layer, reducing the problem of the cable core being pulled, becoming thinner and deformed, and maintaining the stability of the conductive performance.

[0009] Preferably, the connection structure further comprises a rotating ring rotatably connected to the protective layer, the rotating ring is arranged on the protective layer at intervals, and the connecting block is fixed on the inner wall of the rotating ring.

[0010] By adopting the above technical solution, the rotating ring can rotate, so that the connecting block can be misaligned with the connecting groove when the cable core is installed, making way for the installation of the cable core.

[0011] Preferably, the connection blocks are arranged opposite to each other on the inner wall of the rotating ring, and the opposite connection blocks are in an L-shape facing each other.

[0012] By adopting the above technical solution, the L-shaped connecting blocks facing each other have deformation space, so that the connecting blocks and the connecting grooves are misaligned to avoid obstruction when the cable core is installed, and are easier to be placed between the protective layer and the insulating layer; in addition, the deformable connecting blocks can also provide a certain buffering effect when the protective layer is under stress, thereby improving the impact resistance of wires and cables.

[0013] Preferably, the protective layer is provided with an annular groove for accommodating the rotating ring.

[0014] By adopting the above technical solution, the annular groove provides an accommodating space for the rotating ring, thereby preventing the rotating ring from protruding out of the protective layer, making the overall structure more reasonable.

[0015] Preferably, the rotating ring is formed by splicing relatively deformable splicing rings; protrusions are fixed at both ends of one splicing ring, and open grooves with a diameter smaller than the protrusions are opened at both ends of the other splicing ring, and one side of the open groove is connected to an accommodating groove that can accommodate the protrusion.

[0016] By adopting the above technical solution, the splicing rings are spliced ​​into a rotating ring, which facilitates the later installation of the rotating ring and also makes it easier to observe the misalignment of the connecting block and the connecting groove.

[0017] Preferably, the insulating layer is positioned in the protective layer by a positioning structure.

[0018] By adopting the above technical solution, the positioning structure realizes the lateral positioning of the insulating layer relative to the protective layer, which facilitates the accurate positioning of the connecting block in the connecting groove in subsequent operations.

[0019] Preferably, the positioning structure includes a positioning band and a positioning groove, the positioning band is fixed on the side wall of the insulating layer at intervals along the extension direction of the insulating layer, the positioning groove is opened on the inner wall of the protective layer and cooperates with the positioning band of the insulating layer of the corresponding cable core, and the positioning band is positioned in the positioning groove.

[0020] By adopting the above technical solution, the cooperation between the positioning belt and the positioning groove plays a role in assisting the positioning of the insulating layer, and assisting the connection block in being positioned in the connection groove.

[0021] Preferably, the insulating layer is made of ceramic silicone rubber material; and the protective layer is a halogen-free low-smoke polyethylene layer.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] The connection block of the protective layer and the connection groove of the insulating layer are positioned and matched to realize the lateral positioning of the cable core and the protective layer, so that the cable core and the protective layer can be pulled synchronously, improving the connection stability between the cable core and the insulating layer, reducing the problem of the cable core being pulled thin and deformed, and maintaining the stability of the conductive performance;

[0024] An annular groove for accommodating the rotating ring is provided on the protective layer. The rotating ring can rotate in the annular groove, so that the connecting block can be misaligned with the connecting groove when the cable core is installed, making way for the installation of the cable core;

[0025] A T-shaped slot is provided through the bottom of the connection block to provide a deformation space for the connection block, so that the connection block and the connection slot are misaligned to avoid obstruction during the installation of the cable core, and it is easier to place between the protective layer and the insulating layer; in addition, the deformable connection block can also provide a certain buffering effect when the protective layer is stressed, thereby improving the impact resistance of the wire and cable;

[0026] The cooperation between the positioning belt on the insulating layer and the positioning groove on the inner wall of the protective layer plays a role in assisting the positioning of the insulating layer, and the auxiliary connecting block is accurately positioned in the connecting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic cross-sectional view of the electric wire and cable of an embodiment of the present application;

[0028] Figure 2 It is a schematic diagram of the partial structure of the positioning belt and the connecting groove on the insulating layer of the embodiment of the present application;

[0029] Figure 3 It is a schematic diagram of a local explosion structure in which a splicing ring of an embodiment of the present application is installed on a protective layer;

[0030] Figure 4 It is a schematic cross-sectional structure diagram of the connection block and the connection groove, and the protrusion and the receiving groove in the embodiment of the present application;

[0031] Figure 5 yes Figure 4 Enlarged schematic diagram of part A.

[0032] Explanation of the accompanying drawings: 1. cable core; 2. insulation layer; 3. protective layer; 31. annular groove; 4. positioning structure; 41. positioning belt; 42. positioning groove; 5. connecting structure; 51. rotating ring; 52. connecting block; 53. connecting groove; 6. splicing ring; 61. protrusion; 62. opening groove; 63. accommodating groove. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings.

[0034] The present application embodiment discloses a silicone rubber insulated halogen-free low-smoke wire and cable, referring to Figure 1 , comprising a cable core 1, the cable core 1 is wrapped with an insulating layer 2, and the insulating layer 2 is wrapped with a protective layer 3; the insulating layer 2 is made of ceramic silicone rubber material; the protective layer 3 is a halogen-free low-smoke polyethylene layer.

[0035] Reference Figure 1 , 2 The insulating layer 2 is positioned in the protective layer 3 by the positioning structure 4, so that the insulating layer 2 is laterally positioned relative to the protective layer 3; the positioning structure 4 includes a positioning belt 41 and a positioning groove 42, the positioning belt 41 is fixed on the side wall of the insulating layer 2 at intervals along the extension direction of the insulating layer 2, the positioning groove 42 is opened on the inner wall of the protective layer 3 and cooperates with the positioning belt 41 of the insulating layer 2 of the corresponding cable core 1, and the positioning belt 41 is positioned in the positioning groove 42 to assist in positioning the insulating layer 2.

[0036] Reference Figure 1 , 3 The protective layer 3 and the insulating layer 2 are connected via a connecting structure 5, which includes a rotating ring 51 rotatably connected to the protective layer 3. The protective layer 3 is provided with an annular groove 31 for accommodating the rotating ring 51, so as to prevent the rotating ring 51 from protruding out of the protective layer 3, thereby making the overall structure more reasonable; and the rotating rings 51 are arranged on the protective layer 3 at intervals along the extension direction of the protective layer 3.

[0037] Reference Figure 3 , 4 The rotating ring 51 is formed by splicing relatively arranged deformable splicing rings 6.

[0038] Reference Figure 4 , 5 A protrusion 61 is fixed at both ends of one splicing ring 6, and an open groove 62 with a diameter smaller than the protrusion 61 is opened at both ends of the other splicing ring 6. One side of the open groove 62 is connected to a receiving groove 63 that can accommodate the protrusion 61. The protrusion 61 enters the receiving groove 63 from the open groove 62 to achieve a stable connection, which facilitates the installation of the rotating ring 51.

[0039] Reference Figure 3 , 4 The connection structure 5 also includes a deformable connection block 52 relatively fixed on the inner wall of the rotating ring 51 and a connection groove 53 opened on the insulating layer 2, and the connection groove 53 passes through the annular groove 31; the relative connection blocks 52 are L-shaped facing each other, thereby providing a deformation space for the connection blocks 52, so that the connection blocks 52 and the connection grooves 53 are misaligned to avoid obstruction when the cable core 1 is installed, and are more easily placed between the protective layer 3 and the insulating layer 2; in addition, the deformable connection block 52 can also provide a certain buffering effect when the protective layer 3 is subjected to force, thereby improving the impact resistance of the wire and cable.

[0040] Reference Figure 1 , 4When the rotating ring 51 is driven to rotate, the connecting block 52 can be positioned in the connecting groove 53, so that the cable core 1 and the protective layer 3 can be positioned horizontally, so that the cable core 1 and the protective layer 3 can be pulled synchronously, thereby improving the connection stability between the cable core 1 and the insulating layer 2, reducing the problem of the cable core 1 being pulled thinner and deformed, and maintaining the stability of the conductive performance.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A silicone rubber insulated halogen-free low-smoke wire and cable, comprising a cable core (1), the cable core (1) is wrapped with an insulating layer (2), and the insulating layer (2) is wrapped with a protective layer (3); characterized in that: The insulating layer (2) abuts against the inner wall of the protective layer (3); the protective layer (3) and the insulating layer (2) are connected via a connecting structure (5); the connecting structure (5) comprises a deformable connecting block (52) fixed on the inner wall of the protective layer (3) and a connecting groove (53) provided on the insulating layer (2); the connecting block (52) can be positioned in the connecting groove (53).

2. The silicone rubber insulated halogen-free and low-smoke wire and cable according to claim 1, characterized in that: The connection structure (5) further comprises a rotating ring (51) rotatably connected to the protective layer (3); the rotating ring (51) is arranged on the protective layer (3) at intervals; and the connection block (52) is fixed on the inner wall of the rotating ring (51).

3. The silicone rubber insulated halogen-free and low-smoke wire and cable according to claim 2, characterized in that: The connecting blocks (52) are arranged opposite to each other on the inner wall of the rotating ring (51), and the opposite connecting blocks (52) are in an L-shape facing each other.

4. The silicone rubber insulated halogen-free and low-smoke wire and cable according to claim 2, characterized in that: The protective layer (3) is provided with an annular groove (31) for accommodating the rotating ring (51).

5. The silicone rubber insulated halogen-free and low-smoke wire and cable according to claim 2, characterized in that: The rotating ring (51) is formed by splicing two deformable splicing rings (6) arranged opposite to each other; protrusions (61) are fixed at both ends of one splicing ring (6), and open grooves (62) with a diameter smaller than that of the protrusions (61) are opened at both ends of the other splicing ring (6), and one side of the open groove (62) is connected to a receiving groove (63) capable of receiving the protrusions (61).

6. The silicone rubber insulated halogen-free and low-smoke wire and cable according to claim 1, characterized in that: The insulating layer (2) is positioned in the protective layer (3) by means of a positioning structure (4).

7. The silicone rubber insulated halogen-free and low-smoke wire and cable according to claim 6, characterized in that: The positioning structure (4) comprises a positioning band (41) and a positioning groove (42); the positioning band (41) is fixed on the side wall of the insulating layer (2) at intervals along the extension direction of the insulating layer (2); the positioning groove (42) is formed on the inner wall of the protective layer (3) and cooperates with the positioning band (41) of the insulating layer (2) of the corresponding cable core (1); the positioning band (41) is positioned in the positioning groove (42).

8. The silicone rubber insulated halogen-free and low-smoke wire and cable according to claim 1, characterized in that: The insulating layer (2) is made of ceramic silicone rubber material; and the protective layer (3) is a halogen-free low-smoke polyethylene layer.

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