CN212695376U - Prevent cable subassembly that soaks - Google Patents
Prevent cable subassembly that soaks Download PDFInfo
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- CN212695376U CN212695376U CN202021671762.1U CN202021671762U CN212695376U CN 212695376 U CN212695376 U CN 212695376U CN 202021671762 U CN202021671762 U CN 202021671762U CN 212695376 U CN212695376 U CN 212695376U
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- tail accessory
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Abstract
A submersible-resistant cable assembly comprising: the plug comprises two plugs, two plug tail accessories, a plurality of single-core wires and two sections of waterproof heat-shrinkable sleeves; a plurality of plug contact elements are arranged in the plug, and the tail ends of the plug contact elements are provided with welding cups; the plug tail accessory is detachably and fixedly connected to the plug tail end; during the assembly, plug tail annex and plug are dismantled and are opened, cable conductor one end is arranged in to a plug, the cable conductor other end is arranged in to another plug, a plug tail annex inner chamber is passed to cable conductor one end, the cable conductor other end passes another plug tail annex inner chamber, it is as an organic whole with plug fixed connection when each bundle of single core wire tip and the corresponding welding back plug tail annex head end of each welding cup, plug tail annex head end is uncovered to be sealed, insulating silicone rubber layer fills in plug tail annex inner chamber, the bellows tip, the silicone rubber area, the cable conductor is pressed from both sides the fastening through pressing from both sides tight subassembly and is decided, waterproof heat shrinkable tube sleeve middle part cover is pressed. The utility model discloses structural design is simple, the commonality is strong, maintainability is good.
Description
Technical Field
The utility model relates to a prevent cable subassembly that soaks is applicable to the electric line connection in fields such as vehicle engineering, communication power supply, power machinery.
Background
With the higher and higher electrification degree of special vehicles, mobile power stations and large-scale machinery, more and more cable assemblies are used on equipment to meet the connection of electric lines. Because these equipment are used in the open air for a long time, the cable assembly often works under the harsh environment such as vibration, rainwater, dust, etc., in order to improve the security and reliability of equipment operation, generally require the cable assembly protection level to reach IP54 at least-namely unable to prevent the dust invasion completely, but the dust volume of invading can not influence the electric normal operation, prevent the water invasion that splashes from all directions.
In order to meet the requirements of vibration resistance and water resistance of the cable assembly, the conventional design modes of the cable assembly at present have two types, one is a die-sinking integrated encapsulation forming design, after a lead and a plug contact element are welded, a customized encapsulation die is adopted to carry out integrated encapsulation of rubber or plastics on the tail part of the plug and the lead, so that the lead and the plug are connected into a whole, and the effects of water resistance and vibration resistance are achieved. The disadvantage of this method is that the customized encapsulation mould does not have the commonality, needs to design different moulds according to plug, wire size, and a large-scale equipment generally can use dozens or even hundreds of cable subassemblies, needs to customize several hundreds of encapsulation moulds this moment, and is with high costs, process cycle length. Meanwhile, after the mold opening integrated potting, once a core wire in the cable assembly breaks down, the whole cable assembly can only be replaced due to the fact that the potting adhesive cannot be recovered after being disassembled, and the cable assembly is not maintainable and has serious material waste.
The other type is a waterproof tail accessory design, see figure 4 for details, the special waterproof tail accessory is designed by combining the diameters of the plug and the cable, a sealing ring and a rubber sleeve are arranged in the tail accessory, the sealing ring ensures waterproof sealing at a mechanical joint, a pressing ring is used for clamping the cable, and the rubber sleeve is used for sealing a cable outlet. The disadvantage of this method is that the structural design of the plug tail accessory is complex, and 4 kinds of structural components such as the connecting nut 10, the sleeve I14, the sleeve II 16 and the compression nut 18 need to be processed; the snap spring 12, the first sealing ring 11, the second sealing ring 13 and the rubber ring 17 are matched for structural sealing, and the matching precision requirement is high; the mold is opened to customize the compression ring 15 and the rubber sleeve 19, so that the production cost is high; rubber sleeve 19 among the tail annex mostly is single round hole structure, leads to the waterproof tail annex of prior art only to be applicable to the whole root circular cable of single core or multicore, because of clamp ring 15, the 19 compression ratio of rubber sleeve are low, requires highly to the cable diameter, and the cable diameter scope of the tail annex adaptation of a specification is usually no longer than 5mm, and the commonality is poor. At present, each core wire in the multi-core cable is mostly the wire of the same specification, when an electrical line of engineering equipment is designed, a plurality of power supply signals are often transmitted in one cable assembly, wires of different specifications are needed to be used, the whole cable can not meet engineering requirements, and the cable assembly is generally connected through a plurality of beams of single-core wires 20. In a cable assembly composed of a plurality of bundles of single-core wires, because each bundle of wires is round and has a gap during bundling, the sealing effect cannot be achieved by adopting a clamping mode of a rubber sleeve 19, which is shown in detail in figure 5. It is clear from the figure that the mounting gap does not meet the waterproof requirements.
The mold opening integrated encapsulation forming design does not have maintainability, the waterproof tail accessory design is not suitable for sealing of multiple single-core wires, and the two design modes have the problems of high processing cost, long processing period, low universality, complex structural design and the like.
Disclosure of Invention
In order to solve the problem that exists among the background art, the utility model provides an anti-flooding cable subassembly, structural design is simple, under the condition that further improves cable subassembly protection level, has solved among the prior art cable subassembly processing cost height, processing cycle length, commonality low, the poor problem of maintainability.
The utility model adopts the technical proposal that: the method comprises the following steps: the plug comprises two plugs, a plurality of plug contact elements are arranged in the plugs, and welding cups are arranged at the tail ends of the plug contact elements; the plug tail accessories are of a cylindrical structure with openings at the head end and the tail end, a clamping assembly is arranged at the tail end of the plug tail accessory, and the plug tail accessory is detachably and fixedly connected to the tail end of the plug; the cable comprises a plurality of single-core wires, a plurality of corrugated pipes and a plurality of lead wires, wherein two ends of the plurality of single-core wires are wound by a silicon rubber belt to form a cable bundle; two sections of waterproof heat-shrinkable sleeves; during assembly, the plug tail accessory is detached from the plug, one end of a cable is arranged in one plug, the other end of the cable is arranged in the other plug, one end of the cable penetrates through the inner cavity of the plug tail accessory, the other end of the cable penetrates through the inner cavity of the other plug tail accessory, the head end of the plug tail accessory is fixedly connected with the plug into a whole after welding points are formed by correspondingly welding the end parts of all bundles of single-core wires and the welding cups of all plug contact elements, the head end of the plug tail accessory is open and closed, an insulating silicone rubber layer for covering all the welding points is filled in the inner cavity of the plug tail accessory, the end part of a corrugated pipe, a silicone rubber belt and the cable are clamped and fixed through a clamping component at the tail end of the plug tail accessory, the middle part of a waterproof heat-shrinkable sleeve is sleeved at the clamping and fixing.
And under the natural extension state of the corrugated pipe, the silicon rubber belt is arranged in the corrugated pipe.
The clamping assembly is composed of two oppositely arranged pressing plates, the pressing plates are arc-shaped pressing plates, threaded holes are formed in two ends of each arc-shaped pressing plate, and the two arc-shaped pressing plates are fixed through tail accessory screws arranged at the threaded holes in the two ends to form a circular clamp for clamping a cable.
The silicon rubber belt is at least 3mm wider than a pressure plate in the plug tail accessory so as to facilitate installation.
The outer diameter of the cable at the position where the silicon rubber belt is wound at the two ends of the cable is larger than the inner diameter of the corrugated pipe.
The plug tail accessory is in threaded connection with the plug tail end.
The number of the wires is not more than that of the plug contacts, and the universality is stronger.
The distance between the insulating silicon rubber layer and the end part of the corrugated pipe is not less than 3 mm. Can not contact, the interval effect leaves sufficient welding operation space for single core wire and plug contact welding time, makes the utility model discloses possess the feasibility of processing.
Waterproof type plug tail annex among the prior art compares the utility model discloses a mechanical structure will be complicated a lot, and the rear end does not have clamp plate and tail annex screw, the utility model discloses a cable subassembly is wider than the application scope among the background art, and the cable that the unable multi beam single core wire that is suitable for of specially adapted current waterproof type plug tail annex constitutes.
The beneficial effects of the utility model reside in that: the special requirements on the plug tail accessories are avoided, a sealing ring and a rubber sleeve are not needed, a special waterproof tail accessory is not needed to be customized, the special waterproof tail accessory is suitable for a multi-core whole round cable and a plurality of bundles of single-core wires, the application range is wide, and the universality is high; the dual sealing of the glue filling and the heat-shrinkable tubing with glue can ensure that the protection grade can reach IP67, namely, the invasion of foreign objects and dust is completely prevented, the invasion of water during soaking is prevented, and the protection effect of the cable assembly is greatly improved; when a single fault occurs, only the fault lead needs to be replaced, so that the maintenance is good, and the environment is protected and the energy is saved; the cable assembly has the advantages of simple structure, capability of obtaining all the parts from the market easily due to the fact that all the parts are national standard products, no die sinking for manufacturing the cable assembly, short processing period, capability of greatly reducing the production cost, suitability for batch production and good economic and social benefits.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 4 is a prior art plug waterproof tail attachment configuration;
FIG. 5 is a partial effect diagram of the installation of the existing multi-beam single-core wire and the waterproof tail accessory;
in the figure, 1, a plug, 2, a plug tail accessory, 3, a waterproof heat-shrinkable sleeve, 4, a corrugated pipe, 5, a tail accessory screw, 6, insulating silicon rubber, 7, a plug contact element, 8, a single-core wire, 9, a silicon rubber belt, 10, a connecting nut, 11, a first sealing ring, 12, a snap spring, 13, a second sealing ring, 14, a first sleeve, 15, a pressing ring, 16, a second sleeve, 17, a rubber ring, 18, a pressing nut, 19, a rubber sleeve, 20 and a wire.
Detailed Description
In fig. 1 and 2, a plurality of bundles of single-core wires 8 pass through the plug tail accessory 2 and are respectively welded with the plug contact 7 in the plug 1, and the plug tail accessory 2 is screwed on the plug 1 in a threaded connection mode. And (3) pouring the insulating silicon rubber 6 into the cavity of the plug tail accessory 2 to enable the liquid level of the insulating silicon rubber 6 to completely submerge the welding point, and after the insulating silicon rubber 6 is cured at room temperature, the welding point can be subjected to waterproof and dustproof effects, as shown in figure 3.
A plurality of single-core wires 8 are tightly wound into a bundle by a silicon rubber belt 9, gaps among the plurality of single-core wires are small, the outer diameter of the wound silicon rubber belt 9 is not smaller than the inner diameter of the corrugated pipe 4, the corrugated pipe 4 is sleeved, the tail accessory screw 5 is screwed, the whole bundle of wires and the corrugated pipe 4 are compressed together, the wires are prevented from loosening, and the vibration resistance of the wires is improved.
The waterproof heat-shrinkable sleeve 3 is sleeved at the joint of the plug tail accessory 2 and the corrugated pipe 4, the inner wall of the waterproof heat-shrinkable sleeve 3 is provided with hot melt adhesive, the waterproof heat-shrinkable sleeve 3 is heated by a hot air gun until the inner layer hot melt adhesive is uniformly seeped out along the edge after shrinkage, and the waterproof heat-shrinkable sleeve is self-integrated after cooling, so that the waterproof and dustproof effect of the second layer is achieved for the cable assembly.
When the multi-beam single-core lead 8 is a multi-core whole round cable, the same measures can be adopted for treatment, under the condition that the round cable meets the waterproof condition, the silicon rubber belt 9 and the corrugated pipe 4 can be omitted, and the double waterproof and dustproof effects can be achieved only by embedding the insulating silicon rubber 6 and sleeving the waterproof heat-shrinkable sleeve 3. The outer layer of the whole multi-core round cable is an insulating skin which is equivalent to a corrugated pipe.
Under the double protection of the waterproof heat-shrinkable sleeve 3 and the insulating silicon rubber 6, the protection grade of the cable assembly can be improved to IP67, and the protection effect is good. All parts are national standard products, die equipment does not need to be purchased for customizing die sinking manufacturing, and production cost is low. The insulating silicon rubber 6 can be solidified after standing at room temperature, the waterproof heat-shrinkable sleeve 3 can complete the heat-shrinkable process by adopting a hot air gun, and the processing is simple, the practicability is strong, and the method is suitable for batch production.
When the cable assembly has a single fault, normal use can be recovered only by replacing the waterproof heat-shrinkable sleeve 3, embedding the insulating silicon rubber 6 again and replacing the fault lead, the whole cable assembly does not need to be replaced, the maintainability is good, the plug and the lead with high cost ratio can be continuously used, and the cable assembly has the advantages of environmental protection, energy conservation and better economic and social values.
Claims (8)
1. An anti-flooding cable assembly characterized in that: comprises that
The plug comprises two plugs (1), wherein a plurality of plug contact elements (7) are arranged in each plug (1), and a welding cup is arranged at the tail end of each plug contact element (7);
the plug tail accessories (2) are of a cylindrical structure with openings at the head end and the tail end, a clamping assembly is arranged at the tail end of the plug tail accessory (2), and the plug tail accessory (2) is detachably and fixedly connected to the tail end of the plug (1);
the cable comprises a plurality of single-core wires (8), wherein two ends of each single-core wire (8) are wound by a silicon rubber belt (9) to form a cable, a corrugated pipe (4) is sleeved outside each cable, and the silicon rubber belts (9) are arranged in the corrugated pipes (4);
two sections of waterproof heat-shrinkable sleeves (3);
during assembly, the plug tail accessory (2) and the plug (1) are disassembled, one plug (1) is arranged at one end of a cable, the other plug (1) is arranged at the other end of the cable, one end of the cable penetrates through the inner cavity of the plug tail accessory (2), the other end of the cable penetrates through the inner cavity of the other plug tail accessory (2), when the end part of each bundle of single-core lead (8) is welded with a welding cup of each plug contact element (7) correspondingly to form a welding point, the head end of the plug tail accessory (2) is fixedly connected with the plug (1) into a whole, the head end of the plug tail accessory (2) is open and closed, insulating silicon rubber (6) for covering each welding point is filled in the inner cavity of the plug tail accessory (2), the end part of the corrugated pipe (4), the silicon rubber belt (9) and the cable are clamped and fixed by the clamping component at the tail end of the plug tail accessory (2), the middle part of the waterproof heat-shrinkable sleeve, one end of the waterproof heat-shrinkable sleeve (3) is sleeved on the outer wall of the plug tail accessory (2), and the other end of the waterproof heat-shrinkable sleeve (3) is sleeved on the outer wall of the corrugated pipe (4).
2. The immersion resistant cable assembly of claim 1 wherein: and the silicon rubber belt (9) is arranged in the corrugated pipe (4) under the natural extension state of the corrugated pipe (4).
3. The immersion resistant cable assembly of claim 1 wherein: the clamping assembly is composed of two oppositely arranged pressing plates, the pressing plates are arc-shaped pressing plates, threaded holes are formed in the two ends of each arc-shaped pressing plate, and the two arc-shaped pressing plates are fixed through tail accessory screws (5) arranged at the threaded holes in the two ends to form a circular clamp for clamping a cable.
4. The water immersion resistant electrical cable assembly as recited in claim 3, wherein: the silicon rubber belt (9) is at least 3mm wider than a pressure plate in the plug tail accessory (2).
5. The immersion resistant cable assembly of claim 1 wherein: the outer diameter of the cable at the position where the silicon rubber belt (9) is wound at the two ends of the cable is larger than the inner diameter of the corrugated pipe (4).
6. The immersion resistant cable assembly of claim 1 wherein: the plug tail accessory (2) is in threaded connection with the tail end of the plug (1).
7. The immersion resistant cable assembly of claim 1 wherein: the number of wires (8) is not more than the number of plug contacts (7).
8. The immersion resistant cable assembly of claim 1 wherein: and the distance between the insulating silicon rubber (6) and the end part of the corrugated pipe is not less than 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021671762.1U CN212695376U (en) | 2020-08-12 | 2020-08-12 | Prevent cable subassembly that soaks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021671762.1U CN212695376U (en) | 2020-08-12 | 2020-08-12 | Prevent cable subassembly that soaks |
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| Publication Number | Publication Date |
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| CN212695376U true CN212695376U (en) | 2021-03-12 |
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| CN202021671762.1U Active CN212695376U (en) | 2020-08-12 | 2020-08-12 | Prevent cable subassembly that soaks |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600023A (en) * | 2020-08-12 | 2021-04-02 | 襄阳航力机电技术发展有限公司 | Prevent cable subassembly that soaks |
| CN113517597A (en) * | 2021-03-31 | 2021-10-19 | 海洋王（东莞）照明科技有限公司 | Explosion-proof charger |
| CN112600023B (en) * | 2020-08-12 | 2024-07-02 | 襄阳航力机电技术发展有限公司 | Waterproof cable assembly |
-
2020
- 2020-08-12 CN CN202021671762.1U patent/CN212695376U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600023A (en) * | 2020-08-12 | 2021-04-02 | 襄阳航力机电技术发展有限公司 | Prevent cable subassembly that soaks |
| CN112600023B (en) * | 2020-08-12 | 2024-07-02 | 襄阳航力机电技术发展有限公司 | Waterproof cable assembly |
| CN113517597A (en) * | 2021-03-31 | 2021-10-19 | 海洋王（东莞）照明科技有限公司 | Explosion-proof charger |
| CN113517597B (en) * | 2021-03-31 | 2024-04-19 | 深圳市海洋王石油照明技术有限公司 | Explosion-proof charger |
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