Waterproof corrosion-resistant cable harness

Abstract

The utility model discloses a waterproof corrosion-resistant cable harness which comprises a connector, the rear end of the connector is fixedly connected with a threaded opening, a waterproof ring is placed on the outer wall of a fixing head, the front end of the waterproof ring is in close contact with the threaded opening, and the inner wall of the threaded opening is in threaded connection with the fixing head and a cable body. The cable main body comprises a wear-resistant outer skin layer, an outer insulating layer, a middle insulating layer, an inner insulating layer, a flexible filling layer, a conductor, a central flexible polygonal long strip and an elastic thin rope, through the unique structural design, the waterproof effect is improved, later maintenance is facilitated, the cable main body adopts a special multi-layer structure, and the service life of the cable main body is prolonged. According to the technical scheme, the waterproof, corrosion-resistant, anti-aging and mechanical properties of the cable harness are greatly improved from the wear-resistant outer skin layer added with corrosion-resistant components to the multiple insulating layers and then to the internal flexible filling layer, the conductor and the central flexible polygonal strip, and a solid guarantee is provided for efficient and stable operation of various industries.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical connection equipment technical field especially is related to a waterproof corrosion -resistant cable harness. BACKGROUND

[0002] In today's diversified industrial and electronic equipment application scene, the importance of cable harness is self-evident, with the high-speed development of industry, especially in new energy, smart grid and high-end manufacturing fields, the performance requirements of cable harness are increasingly stringent, whether in harsh outdoor environment, or in the chemical production workshop with corrosion, or in the aerospace equipment with extremely high reliability requirements, cable harness needs to stably and efficiently transmit power and signal, the traditional cable harness exposes many problems when facing complex working conditions, the waterproof performance is insufficient, water easily invades from the interface or cable outer layer, and then short circuit failure is caused, seriously affecting the normal operation of equipment, in the aspect of corrosion resistance, ordinary cable outer skin is difficult to resist the erosion of chemical substances, when the cable harness is subjected to mechanical external force, uneven stress distribution often leads to local material fatigue, and breakage occurs.

[0003] Under this background, the prior art has made certain improvements, such as adopting multi-layer insulation protection structure, special sealing design and adding anti-corrosion components, there are many defects, therefore, through the unique structure design, such as the connection mode of the thread port and the fixed head cooperating with the waterproof ring, the waterproof effect is improved, and the later maintenance is convenient, the cable main body adopts special multi-layer structure, from the wear-resistant outer skin layer adding anti-corrosion components, to the multi-layer insulation layer, to the internal flexible filling layer, conductor and central flexible polygonal long strip and other exquisite layout, greatly improve the waterproof, corrosion resistance, anti-aging and mechanical properties of the cable harness, and provide solid protection for the efficient and stable operation of various industries. SUMMARY

[0004] This part aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part and the abstract of the specification and the utility model name to avoid obscuring the purpose of this part, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] Therefore, the utility model aims at providing a kind of waterproof corrosion -resistant cable harness, the design solves the problem that traditional cable is easily corroded and easily broken in harsh environment by the synergistic innovation of composite sealing technology and flexible support structure, provides reliable solution for high-end equipment connection.

[0006] To solve the above technical problems, the utility model provides a waterproof corrosion -resistant cable harness adopts the following technical scheme: including the connector, the rear end fixed connection of connecting head has the screw thread mouth, the inner wall screw thread connection of screw thread mouth has the fixed head,

[0007] Cable main body, the cable main body includes wear -resistant outer skin layer, outer insulation layer, middle insulation layer, internal insulation layer, flexible filling layer, conductor, center flexible polygonal long strip and elastic string.

[0008] Optionally, the outer wall of the fixed head is placed with a waterproof ring, the front end of the waterproof ring is in close contact with the screw thread mouth, and the material of the waterproof ring is butyronitrile rubber.

[0009] Optionally, the outer surface of the wear -resistant outer skin layer is provided with strip -like protrusions, the number of strip -like protrusions is multiple and evenly distributed on the outer surface of the wear -resistant outer skin layer, and the material of the wear -resistant outer skin layer is polyvinyl chloride.

[0010] Optionally, the inside of the center flexible polygonal long strip is provided with a hole, the inner wall of the hole is in close contact with the elastic string, and the material of the elastic string is ultra -high molecular weight polyethylene.

[0011] Optionally, the inner wall of the wear -resistant outer skin layer is in close contact with the outer insulation layer, the inner wall of the outer insulation layer is in close contact with the middle insulation layer, and the material of the outer insulation layer is cross -linked polyethylene.

[0012] Optionally, the inner wall of the middle insulation layer is in close contact with the internal insulation layer, the inner wall of the internal insulation layer is in close contact with the flexible filling layer, the material of the middle insulation layer is cross -linked polyethylene, and the material of the internal insulation layer is cross -linked polyethylene.

[0013] Optionally, the inside of the flexible filling layer is in contact with the conductor, the number of conductors is multiple and annularly distributed in the inside of the flexible filling layer, and the material of the flexible filling layer is ethylene -propylene -diene rubber.

[0014] Optionally, the inside of the flexible filling layer is in contact with the center flexible polygonal long strip, the center of the flexible filling layer is in the position of the center flexible polygonal long strip, and the material of the center flexible polygonal long strip is aramid fiber composite material.

[0015] Summarized above, the utility model includes following at least one beneficial effect:

[0016] 1, center polygonal long strip and elastic string constitute flexible skeleton, make cable can bear 3 times outer diameter bending radius's repeated deformation, keep torsional rigidity simultaneously, adapt to the wiring demand in narrow space, and the conductor is annularly distributed in the elastic filling layer, disperses stress, avoids bending fracture.

[0017] 2. The threaded interface enables quick disassembly and replacement of vulnerable parts such as the waterproof ring and the front connector without the need for special tools. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings described in the following are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0020] Figure 2 It is a schematic diagram of the connector waterproof structure of the present application.

[0021] Figure 3 It is a schematic diagram of the cable cross-section structure of the present application.

[0022] Figure 4 It is a sectional view of the present application.

[0023] The reference signs are as follows: 1, connector; 2, threaded port; 3, waterproof ring; 4, fixed head; 5, cable main body; 6, wear-resistant outer skin layer; 7, strip-shaped protrusion; 8, outer insulation layer; 9, middle insulation layer; 10, inner insulation layer; 11, flexible filling layer; 12, conductor; 13, central flexible polygonal long strip; 14, elastic string; 15, hole. DETAILED DESCRIPTION

[0024] This part will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the drawings, and the drawings are used to supplement the description of the text part to make people understand each technical feature and the overall technical scheme of the present application intuitively and visually, but it cannot be understood as a limitation on the protection scope of the present application.

[0025] Referring to Figures 1-4 , the strength detection device of the superhard abrasive tool of the embodiment of the present application comprises a connector 1, the rear end of the connector 1 is fixedly connected with a threaded port 2, the inner wall of the threaded port 2 is threadedly connected with a fixed head 4, the outer wall of the fixed head 4 is placed with a waterproof ring 3, the front end of the waterproof ring 3 is in close contact with the threaded port 2, the material of the waterproof ring 3 is nitrile rubber, the front end of the waterproof ring 3 is in close contact with the threaded port 2, the threaded connection between the threaded port 2 and the fixed head 4 and the waterproof ring 3 placed between the threaded port 2 and the fixed head 4 not only facilitate the maintenance of the position of the connector 1 in the later period, but also improve the waterproof effect.

[0026] The cable body 5 comprises a wear-resistant outer skin layer 6, an outer insulation layer 8, a middle insulation layer 9, an inner insulation layer 10, a flexible filling layer 11, a conductor 12, a central flexible polygonal long strip 13 and an elastic string 14. The outer surface of the wear-resistant outer skin layer 6 is provided with strip-shaped protrusions 7, the number of the strip-shaped protrusions 7 is multiple and uniformly distributed on the outer surface of the wear-resistant outer skin layer 6, the material of the wear-resistant outer skin layer 6 is polyvinyl chloride, the central flexible polygonal long strip 13 is internally provided with a hole 15, the inner wall of the hole 15 is in close contact with the elastic string 14, the inner wall of the wear-resistant outer skin layer 6 is in close contact with the outer insulation layer 8, the material of the outer insulation layer 8 is cross-linked polyethylene, the inner wall of the outer insulation layer 8 is in close contact with the middle insulation layer 9, the inner wall of the middle insulation layer 9 is in close contact with the inner insulation layer 10, the material of the middle insulation layer 9 is cross-linked polyethylene, the material of the inner insulation layer 10 is cross-linked polyethylene, the inner wall of the inner insulation layer 10 is in close contact with the flexible filling layer 11, the material of the flexible filling layer 11 is ethylene propylene diene rubber, the inside of the flexible filling layer 11 is in contact with the conductor 12, the number of the conductor 12 is multiple and annularly distributed in the inside of the flexible filling layer 11, the inside of the flexible filling layer 11 is in contact with the central flexible polygonal long strip 13, the material of the central flexible polygonal long strip 13 is aramid fiber composite material, the position of the central flexible polygonal long strip 13 is in the center of the flexible filling layer 11, the central flexible polygonal long strip 13 and the conductor 12 are annularly arranged to form symmetrical stress distribution, so as to avoid material fatigue caused by local stress concentration, when external pressure acts, the flexible filling layer 11 and the elastic string 14 cooperatively absorb energy, the material of the elastic string 14 is ultra-high molecular weight polyethylene, and the protective insulation layer is protected from damage.

[0027] Working principle: the connector 1 is screwed with the fixed head 4 through the rear end threaded port 2, the waterproof ring 3 clamped between the two is elastically deformed under the threaded pressure to form a mechanical sealing barrier to prevent water from penetrating along the interface, the cable body 5 adopts a four-layer protection structure, the outermost layer is a wear-resistant outer skin layer 6 made of corrosion-resistant material, the strip-shaped protrusions 7 uniformly distributed on the surface of the outer skin layer form flow grooves to accelerate water sliding, the inner side of the outer skin layer is sequentially attached with the outer insulation layer 8, the middle insulation layer 9 and the inner insulation layer 10, the three layers of insulation materials block the diffusion of corrosive liquid layer by layer, the flexible filling layer 11 is composed of an elastic body, fills the gap between the conductors 12 and closes the internal space to prevent moisture from entering.

[0028] The conductor 12 is embedded in the flexible filling layer 11 in a ring array, a plurality of wires are twisted to improve flexibility, and cooperate with the elastic buffer of the filling layer to withstand repeated bending without breaking, the cable center is provided with a central flexible polygonal long strip 13 made of high-strength flexible material, and a plurality of elastic strings 14 are arranged in the internal hole 15, the structure has rigidity and elasticity: the polygonal cross section enhances the anti-twisting ability, the elastic string 14 generates a restoring force when stretched, so that the cable can automatically reset after twisting, and adapt to complex wiring environment.

[0029] At the material level, the wear-resistant outer skin layer 6 adds special anti-corrosion components to improve the anti-aging and chemical corrosion ability, the insulating layer uses weather-resistant material to maintain stable insulating performance in a wide temperature range, the central flexible polygonal long strip 13 and the conductor 12 annular layout form a symmetrical stress distribution to avoid material fatigue caused by local stress concentration, when external pressure acts, the filling layer and the elastic string 14 cooperate to absorb energy to protect the insulating layer from damage.

[0030] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A waterproof and corrosion-resistant cable harness comprising a connector (1), characterized in that: The rear end of the connector (1) is fixedly connected with a threaded port (2), and the inner wall of the threaded port (2) is threadedly connected with a fixing head (4). The cable body (5) comprises a wear-resistant outer skin layer (6), an outer insulation layer (8), a middle insulation layer (9), an inner insulation layer (10), a flexible filling layer (11), a conductor (12), a central flexible polygonal long strip (13) and an elastic string (14).

2. The waterproof and corrosion-resistant cable harness according to claim 1, characterized in that: The outer wall of the fixing head (4) is provided with a waterproof ring (3), the front end of the waterproof ring (3) is in close contact with the threaded port (2), and the waterproof ring (3) is made of butyronitrile rubber.

3. The waterproof and corrosion-resistant cable harness of claim 1, wherein: The outer surface of the wear-resistant outer skin layer (6) is provided with strip-shaped protrusions (7), the number of the strip-shaped protrusions (7) is multiple and uniformly distributed on the outer surface of the wear-resistant outer skin layer (6), and the wear-resistant outer skin layer (6) is made of polyvinyl chloride.

4. The waterproof and corrosion-resistant cable harness of claim 1, wherein: The central flexible polygonal long strip (13) is internally provided with a hole (15), the inner wall of the hole (15) is in close contact with the elastic string (14), and the elastic string (14) is made of ultra-high molecular weight polyethylene.

5. The waterproof and corrosion-resistant cable harness of claim 1, wherein: The inner wall of the wear-resistant outer skin layer (6) is in close contact with the outer insulation layer (8), the inner wall of the outer insulation layer (8) is in close contact with the middle insulation layer (9), and the outer insulation layer (8) is made of cross-linked polyethylene.

6. The waterproof and corrosion-resistant cable harness of claim 1, wherein: The inner wall of the middle insulation layer (9) is in close contact with the inner insulation layer (10), the inner wall of the inner insulation layer (10) is in close contact with the flexible filling layer (11), the middle insulation layer (9) is made of cross-linked polyethylene, and the inner insulation layer (10) is made of cross-linked polyethylene.

7. The waterproof and corrosion-resistant cable harness of claim 1, wherein: The inner part of the flexible filling layer (11) is in contact with the conductor (12), the number of the conductor (12) is multiple and annularly distributed in the inner part of the flexible filling layer (11), and the flexible filling layer (11) is made of ethylene-propylene-diene rubber.

8. The waterproof and corrosion-resistant cable harness of claim 1, wherein: The inner part of the flexible filling layer (11) is in contact with the central flexible polygonal long strip (13), the central flexible polygonal long strip (13) is located at the center of the flexible filling layer (11), and the central flexible polygonal long strip (13) is made of aramid fiber composite material.

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