Cable deconcentrator used underwater

Abstract

The invention discloses a cable deconcentrator used underwater. The cable deconcentrator solves the technical problem that an existing underwater cable deconcentrator is difficult to meet the requirements of sealing performance, electromagnetic shielding and miniaturization at the same time when facing a narrow installation space. An underwater cable deconcentrator provided by the present invention comprises an inner shell, an outer shell, a plurality of cables and a PCB, a containing cavity for containing the PCB is arranged in the inner shell, the outer shell wraps the inner shell, the PCB comprises a circuit and a plurality of connecting points, the connecting points are connected with the circuit, the cables penetrate through the outer shell and the inner shell to be connected to the connecting points, and the connecting points are connected with the PCB. The inner shell is made of an insulating material, the outer shell is made of an insulating corrosion-resistant material, a shielding coating layer wrapping the periphery of the inner shell is arranged between the outer shell and the inner shell, the circuit comprises a shielding circuit connected with the shielding coating layer, the connecting point comprises a shielding point connected with the shielding circuit, and the shielding point comprises a shielding point connected with the shielding circuit. The cable conductor comprises a shielding wire which is connected with the shielding point location.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underwater electrical connection, in particular to a cable distributor used underwater. BACKGROUND

[0002] The cable distributor is used as a transition at the intersection of multiple cables, which can realize the connection of the cables and the branching propagation of the electrical signals. In particular, the cable distributor used underwater also needs to have the functions of insulation, sealing and shielding, so as to better complete the work of cable distribution connection underwater.

[0003] However, the sealing structure of the existing underwater cable distributor mostly adopts a single layer of rubber seal and does not integrate electromagnetic shielding function. The mainstream metal shell distributor can achieve a shielding effectiveness of 40dB, but the metal shell makes the distributor heavy and large in size, which cannot meet the installation needs in narrow space, and the metal shell is prone to corrosion when working in seawater for a long time.

[0004] Therefore, the existing underwater cable distributor cannot meet the needs of sealing, electromagnetic shielding performance and miniaturization when facing the installation needs in narrow space. SUMMARY

[0005] The present application is proposed to overcome the deficiencies of the prior art and provides a cable distributor used underwater, which solves the technical problem that the existing underwater cable distributor cannot simultaneously meet the needs of sealing, electromagnetic shielding and miniaturization when facing the installation needs in narrow space.

[0006] In order to achieve the above technical target, the present application provides a cable distributor used underwater, which comprises an inner shell, an outer shell, a plurality of cables and a PCB board. The inner shell is provided with a cavity for accommodating the PCB board. The outer shell wraps the inner shell. The PCB board comprises a circuit and a plurality of connection points. The connection points are connected to the circuit. The cables pass through the outer shell and the inner shell and are connected to the connection points. The cavity is filled with insulating sealant for sealing the cables and the PCB board. The inner shell is made of insulating material. The outer shell is made of insulating and corrosion-resistant material. A shielding coating is arranged on the periphery of the inner shell between the outer shell and the inner shell. The circuit comprises a shielding circuit connected to the shielding coating. The connection points comprise shielding points connected to the shielding circuit. The cables comprise shielding wires connected to the shielding points.

[0007] The cable line distributor of the present application comprises an inner shell and an outer shell, a cavity is arranged in the inner shell, so that a plurality of cable lines can be connected with the PCB in the cavity, avoiding the increase of the cavity space due to the connection between the plurality of cable lines, the joint and the insulation gap between the joints, so as to minimize the cavity of the inner shell and the size of the cable line distributor; meanwhile, the insulation and sealing of the PCB and the cable line are ensured by pouring the insulating sealant in the cavity, so that the cable line distributor can meet the adaptive requirements of underwater environment; secondly, the outer shell is made of insulating and corrosion-resistant material, which helps to reduce the corrosion of the cable line distributor in underwater environment and reduce the maintenance cost; finally, the shielding coating is arranged between the outer shell and the inner shell, the shielding wire of the cable line is connected to the shielding circuit through the shielding point, and the shielding circuit is connected to the shielding coating, and the shielding coating is wrapped around the outer periphery of the inner shell to form an electromagnetic shielding layer, which can effectively reduce the electromagnetic interference underwater, improve the stability and reliability of the signal passing through the cable line distributor, save the metal shielding cover and reduce the cost, and the cable line realizes continuous electromagnetic shielding and 360° omnidirectional shielding from the entering position of the cable line distributor to the cavity, which greatly improves the shielding effect of the cable line distributor.

[0008] Preferably, the bottom of the cavity is provided with a mounting seat, the PCB is provided with a through hole, the through hole is provided with a metal contact piece connected to the shielding circuit, a metal screw is screwed with the mounting seat to fix the PCB in the cavity, the metal screw passes through the through hole to contact the metal contact piece to connect the shielding circuit, and the metal screw is connected to the shielding coating.

[0009] According to the above technical scheme, the shielding circuit is connected to the shielding coating through the contact between the metal contact piece and the metal screw, avoiding the use of additional connecting components and structures for connecting the shielding circuit and the shielding coating, thereby simplifying the design difficulty of the cable line distributor and reducing the corresponding cost.

[0010] Preferably, the metal screw comprises a metal nut, the metal nut is exposed to the insulating sealant, and the metal nut is connected to the shielding coating.

[0011] According to the above technical scheme, the metal nut of the metal screw is exposed to the insulating sealant, so that the metal nut can be connected to the shielding coating, further simplifying the design difficulty of the cable line distributor and reducing the corresponding cost.

[0012] Preferably, a metal piece is further arranged, the metal piece is embedded in the mounting seat from the bottom of the inner shell, the metal screw fixed on the mounting seat contacts the metal piece, the bottom surface of the metal piece is exposed to the lower surface of the inner shell, and the bottom surface of the metal piece is connected to the shielding coating.

[0013] By the above technical solution, the contact between the metal screw and the shielding coating is realized in another way, which can simplify the design difficulty of the cable splitter and reduce the corresponding cost.

[0014] Preferably, the shielding coating is arranged on the outer surface of the inner housing, the shielding coating covers the surface of the metal nut or the metal piece, and the inner housing is integrally formed with the outer housing by insert injection molding as an insert, so that the outer housing wraps the inner housing.

[0015] By the above arrangement, the outer housing is integrally formed with the inner housing by insert injection molding, the gap between the outer housing and the inner housing is small, the outer contour of the cable splitter can be further reduced, the outer housing can strengthen the structural strength of the cable splitter and protect the shielding coating and the inner housing, and the use time of the cable splitter in underwater environment is improved.

[0016] Preferably, the outer housing comprises a first half housing and a second half housing, a receiving cavity wrapping the inner housing is formed between the first half housing and the second half housing, the shielding coating is arranged on the cavity wall of the receiving cavity, and a protruding portion is arranged on the cavity wall of the receiving cavity and is crimped on the surface of the metal nut or the metal piece, so that the metal nut or the metal piece is connected to the shielding coating.

[0017] By the above technical solution, the outer housing is arranged as a first half housing and a second half housing, which facilitates spraying the shielding coating on the inner side of the first half housing and the second half housing, the first half housing and the second half housing are folded to form a receiving cavity wrapping the inner housing, and a protruding portion for crimping the metal nut or the metal piece is arranged on the cavity wall, so that the outer housing wraps and protects the inner housing and the shielding coating is connected to the shielding coating.

[0018] Preferably, a crimping ring is further arranged for crimping the shielding layer of the cable on the outer skin of the cable, a wire passing hole is arranged on the inner housing, the wire passing hole is sequentially provided with a first passing diameter section and a second passing diameter section in communication in a direction away from the PCB, the passing diameter of the first passing diameter section is larger than that of the second passing diameter section, the first passing diameter section is adapted to the crimping ring, and the second passing diameter section is adapted to the cable.

[0019] By the above technical solution, the crimping ring is used for crimping the shielding layer of the cable on the outer skin of the cable, so the diameter of the cable is larger at the position of the crimping ring, the first passing diameter section and the second passing diameter section are arranged to limit the crimping ring in the wire passing hole of the inner housing, and cooperate with the injected insulating sealant to improve the tensile property of the cable.

[0020] As preferred, the inner shell comprises a first inner shell and a second inner shell, the cable lines are divided into incoming lines and outgoing lines, the first inner shell is provided with a first wire passing hole for the incoming lines to pass through, the second inner shell is provided with a second wire passing hole for the outgoing lines to pass through, and the first inner shell and the second inner shell are fixedly connected through key groove cooperation.

[0021] By adopting the foregoing technical scheme, the inner shell is divided into the first inner shell and the second inner shell, which reduces the operation difficulty of the operator when fixing the cable lines on the inner shell, and is convenient for the operator to perform the pre-stripping treatment on different cable lines, thereby reducing the labor cost of operation.

[0022] As preferred, the outer shell is provided with a net tail structure, and the cable lines pass through the net tail structure and are limited by the net tail structure.

[0023] By adopting the foregoing technical scheme, the net tail structure is helpful for stabilizing the cable lines outside the outer shell.

[0024] The features and advantages of the present application will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic view of the cable line distributor in the embodiment of the present application; Figure 2 It is an exploded view of the cable line and the inner shell in the embodiment of the present application; Figure 3 It is a schematic view of the cable line and the inner shell completing the line distribution in the embodiment of the present application; Figure 4 It is Figure 3 It is an enlarged view of A in FIG. 4; Figure 5 It is a sectional view of the cable line distributor in the embodiment of the present application; Figure 6 It is another sectional view of the cable line distributor in the embodiment of the present application; Figure 7 It is another sectional view of the cable line distributor in the embodiment of the present application.

[0026] Reference signs: 100, inner shell, 101, cavity, 102, mounting seat, 110, first inner shell, 111, cooperation key, 120, second inner shell, 121, cooperation groove, 130, wire passing hole, 131, first pass section, 132, second pass section, 133, first wire passing hole, 134, second wire passing hole, 140, metal piece; 200, outer shell, 201, first half shell, 202, second half shell, 210, net tail structure; 300, cable line, 301, shielding line, 310, crimping ring; 400, PCB board, 410, connection point, 420, via hole; 500, shielding coating; 600, metal screw, 601, metal nut; 700, insulating sealant. DETAILED DESCRIPTION

[0027] The technical solutions of the embodiments of the present application will be explained and described below in combination with the drawings of the embodiments of the present application. However, the following embodiments are only preferred embodiments of the present application, and not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple", "several" is two or more, unless otherwise explicitly limited.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] Example one: As Figures 1 to 5As shown, the cable distributor for underwater use in the embodiment of the present application comprises an inner shell 100, an outer shell 200, a plurality of cables 300 and a PCB board 400. The inner shell 100 is provided with a cavity 101 for accommodating the PCB board 400. The outer shell 200 wraps the inner shell 100. The PCB board 400 is provided with a circuit and a plurality of connection points 410 in communication with the circuit. The cables 300 pass through the outer shell 200 and the inner shell 100 and are connected to the connection points 410. The cavity 101 is filled with insulating sealant 700 for sealing the cables 300 and the PCB board 400. The inner shell 100 is made of insulating material, and the outer shell 200 is made of insulating and corrosion-resistant material. A shielding coating 500 is provided between the outer shell 200 and the inner shell 100 and wraps the periphery of the inner shell 100.

[0032] The plurality of cables 300 have a plurality of diameters for adapting to cables with different diameters. The outer shell 200 and the inner shell 100 are respectively provided with wire passing holes for passing the cables 300. The cables 300 are connected to the PCB board 400 in the cavity 101 of the inner shell 100 for branching and splicing. The wires in the cables 300 are welded to the connection points 410. The circuit on the PCB board 400 is set according to the connection relationship of the plurality of cables 300, avoiding the need for mutual insulation between the cables 300 and the splicing components in the cavity 101. After all the cables 300 are welded to the connection points 410, the cavity 101 is filled with the insulating sealant 700. The insulating sealant 700 can completely cover the cables and fill the gaps in the cavity 101. After solidification, the insulating sealant 700 forms an elastic sealing layer that can withstand a certain underwater pressure.

[0033] In the embodiment, the shielding coating 500 between the outer shell 200 and the inner shell 100 forms an electromagnetic shielding layer around the periphery of the inner shell 100, reducing the interference of electromagnetic signals in the underwater environment on the cable signals in the cable distributor.

[0034] The shielding coating 500 is a silver-copper composite conductive coating that is sprayed on the outer surface of the inner shell 100 or the inner surface of the outer shell 200 using a high-pressure spraying process. The conductivity of the shielding coating 500 is 1.2 x 10 4 S / m, and the adhesion is ≥5B. The high-pressure spraying pressure is 0.5 MPa, and the spraying thickness is 0.25 mm.

[0035] In other embodiments, the shielding coating 500 can also be a composite conductive coating containing other metals, such as iron, aluminum, nickel, chromium and other metals with good conductivity.

[0036] The cable line distributor of the application comprises an inner shell 100 and an outer shell 200, a cavity 101 is arranged in the inner shell 100, so that a plurality of cable lines 300 can be connected with a PCB board 400 in the cavity 101, the connection between the plurality of cable lines 300 is avoided, the joint is more, the joint keeps the insulation gap and the like, the cavity 101 space needs to be increased, so that the cavity 101 of the inner shell 100 can be as small as possible, the cable line distributor can be miniaturized as much as possible, meanwhile, the cavity 101 is filled with insulating sealant 700, the insulation and sealing of the PCB board 400 and the cable line 300 are ensured, the cable line distributor can meet the adaptive demand of the underwater environment, secondly, the outer shell 200 is made of insulating and corrosion-resistant material, which helps to reduce the corrosion of the cable line distributor in the underwater environment, and reduces the later maintenance cost, finally, the shielding coating 500 is arranged between the outer shell 200 and the inner shell 100, the shielding coating 500 is wrapped around the periphery of the inner shell 100 to form an electromagnetic shielding layer, which can effectively reduce the underwater electromagnetic interference, improve the stability and reliability of the cable line distributor signal, also save the metal shielding cover, and reduce the cost.

[0037] Based on the foregoing embodiments, in one embodiment, as shown in Figures 2 to 5 The circuit includes a shielding circuit connected to the shielding coating 500, the connection point 410 includes a shielding point connected to the shielding circuit, and the cable line 300 includes a shielding wire 301 connected to the shielding point.

[0038] In the present embodiment, the cable line 300 includes a shielding layer formed by crossing and weaving a plurality of metal wires, wherein the metal wires are usually made of copper or aluminum, and the shielding wire 301 is one or more of the plurality of metal wires. The shielding wire 301 of the cable line 300 is connected to the shielding circuit through the shielding point, and the shielding circuit is connected to the shielding coating 500, so that the cable line distributor realizes continuous electromagnetic shielding and 360° omnidirectional shielding from the cable line 300 entering position to the cavity 101, greatly improving the shielding effect of the cable line distributor.

[0039] The cable line distributor of the application can shield more than 99% of external electromagnetic signals by arranging the shielding coating 500 and connecting the shielding coating 500 to the shielding layer of the cable line 300 through the shielding circuit.

[0040] Embodiment two: Based on embodiment one, in one embodiment, as shown in Figures 2 to 5As shown, the bottom of the cavity 101 is provided with a mounting seat 102, the PCB 400 is provided with a via hole 420, the via hole 420 is provided with a metal contact piece connected with the shielding circuit, the metal screw 600 is screwed with the mounting seat 102 to fix the PCB 400 in the cavity 101, the metal screw 600 passes through the via hole 420 to contact the metal contact piece to connect the shielding circuit, and the metal screw 600 connects the shielding coating 500.

[0041] In this way, the shielding circuit is connected with the shielding coating 500 through the metal contact piece and the metal screw 600, so that the connection of the shielding circuit and the shielding coating 500 does not need to use additional connecting components and structures, thereby simplifying the design difficulty of the cable splitter and reducing the corresponding cost.

[0042] Embodiment three: Based on embodiments one and two, in an embodiment, as shown in Figures 2 to 5 The metal screw 600 includes a metal nut 601, the metal nut 601 is exposed to the insulating sealant 700, and the metal nut 601 connects the shielding coating 500.

[0043] Exposing the metal nut 601 of the metal screw 600 to the insulating sealant 700 enables the metal nut 601 to connect the shielding coating 500, further simplifying the design difficulty of the cable splitter and reducing the corresponding cost.

[0044] Embodiment four: Based on embodiments one to three, in an embodiment, as shown in Figures 2 to 4 , Figure 7 The cable splitter further includes a metal piece 140, the metal piece 140 is embedded in the mounting seat 102 from the bottom of the inner housing 100, the metal screw 600 fixed on the mounting seat 102 contacts the metal piece 140, the bottom surface of the metal piece 140 is exposed to the lower surface of the inner housing 100, and the bottom surface of the metal piece 140 connects the shielding coating 500.

[0045] The inner housing 100 is made of plastic material and is formed by injection molding, the metal piece 140 can be embedded in the inner housing 100 by insert injection molding; or a through hole can be provided on the inner housing 100, the metal piece 140 is in interference fit with the through hole, and the metal piece 140 is embedded in the inner housing 100 by external force.

[0046] The metal piece 140 can be provided with a threaded hole, and the metal screw 600 is screwed with the metal piece 140. Alternatively, a threaded hole can be provided in the mounting seat 102, the metal piece 140 extends into the threaded hole from the bottom of the inner housing 100, and the metal screw 600 screwed in place with the mounting seat 102 contacts the metal piece 140.

[0047] ​Through the above setting, the contact between the metal screw 600 and the shielding coating 500 is realized in another way, which can simplify the design difficulty of the cable distribution device and reduce the corresponding cost.

[0048] In the embodiment, the insulating sealant 700 wraps the surface of the metal screw nut 601, and the metal screw 400 connects the shielding coating 500 through the metal piece 140.

[0049] In this way, the metal screw 400 is partially exposed from the insulating sealant 700, and the metal screw 400 can be better fixed and protected by the insulating sealant 700.

[0050] Embodiment Five: Different from embodiment four, as shown in the figure, in the embodiment, the metal screw nut 601 is exposed from the insulating sealant 700, the metal screw nut 601 connects the shielding coating 500, and the other end of the metal screw 400 connects the shielding coating 500 through the metal piece 140. Figure 6 The one end of the metal screw 400 connects the shielding coating 500 through the metal screw nut 601, and the other end connects the shielding coating 500 through the metal piece 140, so as to ensure that the shielding circuit on the PCB 400 can be connected to the shielding coating 500 through the metal screw 400, thereby improving the stability and reliability of the electromagnetic shielding of the cable distribution device.

[0051] Embodiment Six:

[0052] Based on embodiments three and four, in an embodiment, as shown in the figure, the shielding coating 500 is arranged on the outer surface of the inner shell 100, the shielding coating 500 covers the surface of the metal screw nut 601, and the inner shell 100 is embedded in the outer shell 200 through insert injection molding to make the outer shell 200 wrap the inner shell 100. Figures 2 to 5 The inner shell 100 and the outer shell 200 are formed through insert injection molding, so that the outer shell 200 can protect the shielding coating 500 on the inner shell 100, and the structure of the cable distribution device is reinforced to improve the durability of the cable distribution device.

[0053] Through the above setting, the outer shell 200 is integrally formed with the inner shell 100 through insert injection molding, the gap between the outer shell 200 and the inner shell 100 is small, so that the outer contour of the cable distribution device can be further reduced, and at the same time, the outer shell 200 can play a role in strengthening the structural strength of the cable distribution device and protecting the shielding coating 500 and the inner shell 100, thereby improving the time of using the cable distribution device in underwater environment.

[0054] Embodiment Seven: Based on embodiments four and five, different from embodiment six, as shown in the figure, in the embodiment, the metal screw nut 601 is exposed from the insulating sealant 700, the metal screw nut 601 connects the shielding coating 500, and the other end of the metal screw 400 connects the shielding coating 500 through the metal piece 140.

[0055] The one end of the metal screw 400 connects the shielding coating 500 through the metal screw nut 601, and the other end connects the shielding coating 500 through the metal piece 140, so as to ensure that the shielding circuit on the PCB 400 can be connected to the shielding coating 500 through the metal screw 400, thereby improving the stability and reliability of the electromagnetic shielding of the cable distribution device.​Figures 2 to 4 、 Figure 6 As shown, the shielding coating 500 is provided on the outer surface of the inner shell 100 , and the shielding coating 500 covers the surface of the metal member 140 when spraying the bottom surface of the inner shell 100 .

[0056] Through the above-mentioned setting, the outer shell 200 is integrally formed with the inner shell 100 through insert injection molding, and the gap between the outer shell 200 and the inner shell 100 is very small, so that the outer profile of the cable splitter can be further reduced. At the same time, the outer shell 200 can strengthen the structural strength of the cable splitter and protect the shielding coating 500 and the inner shell 100, thereby increasing the use time of the cable splitter in an underwater environment.

[0057] Embodiment seven: Based on all the above embodiments, in one embodiment, Figure 6 As shown, the outer shell 200 includes a first half shell 201 and a second half shell 202. The first half shell 201 and the second half shell 202 are combined to form a receiving cavity that wraps the inner shell 100. The shielding coating 500 is arranged on the cavity wall of the receiving cavity. A protrusion is provided on the cavity wall of the receiving cavity. The protrusion is crimped to the surface of the metal nut 601, so that the metal nut 601 is connected to the shielding coating 500.

[0058] In some other embodiments, the protrusion is pressed against the surface of the metal member 140 , so that the metal member 140 is connected to the shielding coating 500 .

[0059] The outer shell 200 is set as the first half shell 201 and the second half shell 202, so that the shielding coating 500 can be sprayed on the inner side of the first half shell 201 and the second half shell 202. The first half shell 201 and the second half shell 202 are closed to form a receiving cavity 101 that wraps the inner shell 100, and a raised portion of a crimped metal nut 601 or a metal part 140 is provided on the cavity wall. In another way, the outer shell 200 wraps and protects the inner shell 100, and the shielding circuit is connected to the shielding coating 500.

[0060] The first half-shell 201 and the second half-shell 202 can be sealed by a sealant or a sealing ring. When a sealing ring is used for sealing, a sealing groove can be circumferentially provided on at least one of the half-shells, and the sealing ring is embedded in the sealing groove, with at least a portion of the sealing ring exposed in the sealing groove and sealed when the first half-shell 201 and the second half-shell 202 are closed and compressed.

[0061] Embodiment 8: Based on all the above embodiments, in one embodiment, Figures 2 to 4As shown, the cable line distributor further comprises a crimping ring 310 for crimping the shielding layer of the cable line 300 on the outer skin of the cable line 300. The inner housing 100 is provided with a wire passing hole 130, which is sequentially provided with a first passing diameter section 131 and a second passing diameter section 132 in communication in a direction away from the PCB board 400. The first passing diameter section 131 is adapted to the crimping ring 310, and the second passing diameter section 132 is adapted to the cable line 300.

[0062] The crimping ring 310 is used to crimp the shielding layer of the cable line 300 on the outer skin of the cable line 300. Therefore, the cable line 300 has a larger diameter at the position of the crimping ring 310. By providing the first passing diameter section 131 and the second passing diameter section 132, the crimping ring 310 can be limited in the wire passing hole 130 of the inner housing 100 and cooperate with the injected insulating sealant 700, thereby improving the tensile property of the cable line 300.

[0063] In the embodiment, the crimping ring 310 has different inner diameters corresponding to different diameters of the cable line 300, and the wire passing hole 130 has different passing diameters to match the cable line 300 with different diameters and the crimping ring 310 with different outer diameters.

[0064] In the embodiment, the crimping ring 310 has a sawtooth structure on the inner side to enhance the friction between the crimping ring 310 and the shielding layer.

[0065] When the crimping ring 310 is crimped on the cable line 300, a part of the outer skin is removed from one end of the cable line 300 to expose a certain length of the shielding layer. The shielding layer is wrapped around the remaining outer skin. The shielding layer is crimped on the outer skin of the cable line 300 by the crimping ring 310, and the excess shielding layer is trimmed to be flush with the crimping ring 310.

[0066] In the foregoing embodiment, the shielding wire 301 is a wire extracted from the shielding layer, and the shielding wire 301 is not crimped on the crimping ring 310.

[0067] Embodiment Nine: Based on all the foregoing embodiments, in one embodiment, as shown in Figure 2 The inner housing 100 comprises a first inner housing 110 and a second inner housing 120. The cable lines 300 are divided into incoming lines and outgoing lines. The first inner housing 110 is provided with a first wire passing hole 133 for the incoming lines to pass through. The second inner housing 120 is provided with a second wire passing hole 134 for the outgoing lines to pass through. The first inner housing 110 and the second inner housing 120 are fixedly connected by key groove cooperation.

[0068] The inner shell 100 is divided into the first inner shell 110 and the second inner shell 120, which reduces the operation difficulty of the operator when fixing the cable 300 on the inner shell 100, and facilitates the operator to perform the pre-peeling treatment on different cables 300, thereby reducing the labor cost of the operation.

[0069] In the embodiment, the first inner shell 110 is provided with two matching keys 111, and the second inner shell 120 is correspondingly provided with two matching grooves 121. The matching key 111 is inserted and matched with the matching groove 121 along the first direction. The matching key 111 gradually decreases in width in the second direction, and the matching groove 121 is adapted to the matching key 111, so that the matching member and the matching groove 121 cannot be separated in the second direction.

[0070] In the embodiment, the first direction is the height direction of the inner shell 100, and the second direction is the length direction of the inner shell 100.

[0071] In other embodiments, the first direction and the second direction can also be other directions, but the first direction is always different from the second direction.

[0072] It can be understood that the number of the matching member and the matching groove 121 can also be more than two.

[0073] In other embodiments, the first inner shell 110 can be provided with one or more matching keys 111 and one or more matching grooves 121, and the second inner shell 120 is correspondingly provided with one or more matching grooves 121 and one or more matching keys 111.

[0074] Embodiment ten: Based on all the foregoing embodiments, in one embodiment, as shown in Figure 1 The outer shell 200 is provided with a net tail structure 210, and the cable 300 passes through the net tail structure 210 and is limited by the net tail structure 210. The net tail structure 210 helps to stabilize the cable 300 outside the outer shell 200.

[0075] The net tail structure 210 can be integrally formed with the outer shell 200. When the inner shell 100 is embedded as an insert and integrally formed with the outer shell 200 by insert injection molding, the net tail structure 210 is integrally formed on the cable 300. When the outer shell 200 is assembled by the first half shell 201 and the second half shell 202, the incoming line and the outgoing line can be respectively passed through the first half shell 201 and the second half shell 202 to connect the incoming line and the outgoing line on the net tail structure 210, and then the incoming line and the outgoing line are passed through the inner shell 100 for branching connection. After the cable 300 is completed with the PCB board 400 for branching connection and the solidification of the injected insulating sealant 700, the first half shell 201 and the second half shell 202 are assembled, and the net tail structure 210 limits the incoming line and the outgoing line, respectively.

[0076] The above description is merely that of a specific implementation of the present application, but the scope of protection of the present application is not limited thereto. It should be understood by those skilled in the art that the present application includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the present application will be included in the scope of protection of the claims.

Claims

1. A cable breakout box for underwater use, characterized in that The utility model provides a kind of cable connector, including inner shell, outer shell, several cable lines and PCB board, the inner shell is equipped with the cavity of accommodating the PCB board, the outer shell is wrapped the inner shell, the PCB board is equipped with circuit and several connection points with the circuit communication, the cable line is connected to the connection point by the outer shell and the inner shell, the cavity is filled with insulating sealant that seals the cable line and the PCB board, the inner shell is insulating material, the outer shell is insulating corrosion-resistant material, the outer shell and the inner shell between be equipped with the shielding coating wrapped in the outer shell periphery, the circuit includes the shielding circuit connected the shielding coating, the connection point includes the shielding point connected the shielding circuit, the cable line includes shielding wire, the shielding wire connects the shielding point.

2. The cable splitter of claim 1, wherein, The bottom of the cavity is provided with a mounting seat, and the PCB board is provided with a via hole. A metal contact piece connected to the shielding circuit is arranged in the via hole. A metal screw is screwed with the mounting seat to fix the PCB board in the cavity. The metal screw passes through the via hole to contact the metal contact piece and connect the shielding circuit. The metal screw is connected to the shielding coating.

3. The cable splitter according to claim 2, wherein: The metal screw includes a metal nut, which is exposed to the insulating sealant. The metal nut is connected to the shielding coating.

4. The cable splitter of claim 2, wherein, A metal piece is also included. The metal piece is embedded in the mounting seat from the bottom of the inner shell. The metal screw fixed on the mounting seat contacts the metal piece. The bottom surface of the metal piece is exposed to the lower surface of the inner shell. The bottom surface of the metal piece is connected to the shielding coating.

5. The cable splitter of claim 3, wherein, The shielding coating is arranged on the outer surface of the inner shell. The shielding coating covers the surface of the metal nut. The inner shell is integrally formed with the outer shell by insert injection molding as an insert, so that the outer shell wraps the inner shell.

6. The cable splitter of claim 4, wherein, The shielding coating is arranged on the outer surface of the inner shell. The shielding coating covers the surface of the metal nut. The inner shell is integrally formed with the outer shell by insert injection molding as an insert, so that the outer shell wraps the inner shell.

7. The cable splitter of claim 3 or 4, wherein, The outer shell includes a first half-shell and a second half-shell. The first half-shell and the second half-shell form a receiving cavity that wraps the inner shell. The shielding coating is arranged on the cavity wall of the receiving cavity. The cavity wall of the receiving cavity is provided with a protruding portion. The protruding portion is crimped to the surface of the metal nut or the metal piece, so that the metal nut or the metal piece is connected to the shielding coating.

8. The cable splitter of claim 1, wherein, A crimping ring is also included for crimping the shielding layer of the cable line to the outer skin of the cable line. The inner shell is provided with a wire passing hole. The wire passing hole is sequentially provided with a first passing diameter section and a second passing diameter section in communication in a direction away from the PCB board. The first passing diameter section has a larger diameter than the second passing diameter section. The first passing diameter section is adapted to the crimping ring, and the second passing diameter section is adapted to the cable line.

9. The cable splitter of claim 1, wherein, The inner shell comprises a first inner shell and a second inner shell, a plurality of cable lines are divided into incoming lines and outgoing lines, the first inner shell is provided with a first wire passing hole for the incoming lines to pass through, the second inner shell is provided with a second wire passing hole for the outgoing lines to pass through, and the first inner shell and the second inner shell are fixedly connected through key groove cooperation.

10. The cable splitter of claim 1, wherein, The outer shell is provided with a net tail structure, and the cable lines pass through the net tail structure and are limited by the net tail structure.

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