Street lamp diving safety wire connector

Abstract

The utility model belongs to the technical field of wire connectors, and relates to a street lamp diving safety wire connector, the main body structure comprises a wiring barrel and a screwing flange which are connected with each other, a cable wiring terminal arranged in the wiring barrel and a sealing disc in abutting connection with the screwing flange, and the cable wiring terminal is provided with a terminal hole, a crimping hole and a crimping screw. A through hole is formed in the screwing flange, a sealing ring for wrapping a cable is arranged on the sealing disc, and during use, the cable sequentially penetrates into the screwing flange, the sealing disc and the terminal hole, the crimping screw is screwed, the cable wiring terminal is connected with the wiring barrel, electronic pouring sealant is poured into the wiring barrel, and the wiring barrel and the screwing flange are connected. The power distribution box is simple and compact in structure, small in size, space-saving, long in service life, safer in power distribution, lower in cost and more comprehensive in function, and the protection level reaches up to IP68.

Description

Technical Field:

[0001] The utility model belongs to the technical field of connectors, and relates to a submersible safety connector for street lamps. The protection level can reach IP68, and it can protect the large cable connection points in the street lamp poles and manholes of municipal street lamps. Background Art:

[0002] Urban road lighting is an important part of urban infrastructure, and plays a significant and positive role in improving urban functions, enhancing the urban human environment, raising the living standards of the people, and ensuring safety.

[0003] With the acceleration of the urban modernization process, the municipal construction has advanced by leaps and bounds. The specifications of power cables have become diversified, and the demand for cable connectors has increased. Due to the size limitation of the inspection hatch of the lamp post at the construction site, usually after the cable joint is crimped by the construction personnel, ordinary insulating tape is wound or a water pipe is sleeved to achieve the insulation purpose. However, with the aging of the tape and the hose, the insulation performance decreases. Especially in rainy days or due to other reasons such as spraying, the lamp post body becomes electrified, and pedestrians passing by may cause electric shock accidents. At the same time, when flood disasters and rainstorm weather occur, the cable joints will be flooded. Due to reasons such as waterlogging, the terminals of conventional cable joints will let in water and leak electricity, unable to operate normally, and even may cause dangers such as electric shock to personnel. The safety connectors in the prior art do not meet the usage requirements of large cable street lamps. For example, a safety connector for a coal mining equipment motor disclosed in Chinese Patent No. 201810907428.2 has a cooling layer provided inside the wall of a cylindrical seat. The cooling layer is connected to a coolant inlet and a coolant outlet. The coolant inlet is connected to the coolant, and a solenoid valve is installed on the coolant inlet or the coolant outlet; the circuit board is circular, and a number of insulating limiting protrusions are provided on the outer side of the circuit board. The circuit board is sleeved inside the cylindrical seat, and the insulating limiting protrusions can slide back and forth inside the inner side of the cylindrical seat. Wiring columns are respectively provided on the inner sides of the head ends on both sides of the circuit board. Pull seats are respectively provided on the inner sides of the head ends on both sides of the circuit board, and a pull hole is provided in the middle of the pull seat. Insulating threaded sleeves are respectively sleeved on the inner sides of the head ends on both sides of the cylindrical seat, and the inner ends of the insulating threaded sleeves are in contact with the circuit board. A safety connector for an underground cable disclosed in Chinese Patent No. 201810431822.3 includes a set screw, an insulating rubber fixing sleeve, an insulating colloid fixing cavity, and a wiring conductor. The insulating colloid fixing cavity is symmetrically designed. Two circular holes are opened in the insulating colloid fixing cavity for the cable to enter. A cavity that matches the shape of the wiring conductor is provided inside the insulating colloid fixing cavity for fixing the wiring conductor. Small holes are opened in the insulating colloid fixing cavity and threaded, for the set screw to fasten the cable. The set screw cooperates with the insulating rubber fixing sleeve through the threaded opening on the insulating colloid fixing cavity to press the cable onto the wiring conductor. A rotary extrusion closed safety connector disclosed in Chinese Patent No. 02160165.8 is composed of two major parts: a sealed plug and a sealed socket. The sealed plug has two structures: fully enclosed and semi-enclosed. The fully enclosed sealed plug is composed of a telescopic outer shell, a rotary core, a core spring, a sealing gasket, a sealed wiring cover, a wire sealing sleeve, etc.The telescopic housing is a circular cover-shaped hollow structure that can be folded and compressed, with an oval opening at the front; the front section of the rotary insert core is oval, and positive and negative power conducting strips are installed on the two widest sides of the oval. The ground wire conducting strip is installed in the middle of the front part of the rotary insert core. There is a concave bayonet at the top of each of the two widest sides of the oval. The rear section of the rotary insert core is circular, and a circular card is installed at the top; the insert core spring is sleeved on the rotary insert core, pressing against the circular card and supported inside the telescopic housing to compress the rotary insert core inside the telescopic housing; the sealing gasket is installed in front of the rotary insert core to cover the oval opening of the telescopic housing; the sealed wiring cover is placed on top of the telescopic housing, and the wire sealing sleeve is composed of a trapezoidal sealing rubber tube and a trapezoidal sleeve. Therefore, research and development and design a large-cable street lamp diving safety connector with a relatively high waterproof level to solve the protection safety problem at the joint of the large cable of the street lamp. Summary of the Invention:

[0004] The purpose of the present utility model is to overcome the shortcomings existing in the prior art, research and develop and design a street lamp diving safety connector, and meet the protection requirements at the joint of the large cable of the street lamp by increasing the waterproof level.

[0005] [[ID=,8]]To achieve the above purpose, the main structure of a large-cable street lamp diving safety connector involved in the present utility model includes a wiring barrel and a tightening flange connected to each other, as well as a cable wiring terminal arranged inside the wiring barrel and a sealing disc connected to the tightening flange;

[0006] A number of through holes are opened on the tightening flange, and a number of sealing rings with plugs are arranged on the sealing disc;

[0007] A number of through terminal holes are arranged between the upper and lower surfaces of the cable wiring terminal, and a number of crimping holes are arranged between two corresponding side surfaces, and crimping screws are arranged in the crimping holes;

[0008] Among them, the wiring barrel is connected to the tightening flange in a threaded manner or a snap-fastening manner;

[0009] The end of the wiring barrel is provided with a thread, and the side wall is provided with a convex rib.

[0010] The materials of the wiring barrel and the tightening flange involved in the present utility model are both polycarbonate, which have the characteristics of full insulation, flame retardant and self-extinguishing, corrosion resistance, and no halogen and silicon. In harsh environments such as long-term immersion in water, it can ensure continuous power supply operation, thus achieving the purpose of preventing electric leakage, quick installation, and long service life, and can ensure electrical safety and avoid electric shock problems; the cable wiring terminal can crimp 50-square cables and 70-square cables; the material of the sealing disc is TPU, which has a self-locking characteristic, can be closely attached to the cable, and also has the characteristics of full insulation, good toughness and elasticity; the crimping screw is an internal hexagonal screw.

[0011] The utility model relates to a large cable street lamp submersible safety connector. When used:

[0012] First, pass the cable through the tightening flange into the sealing disc. According to the size of the cable, remove the plug to make the sealing disc fit tightly with the tightening flange and cable.

[0013] Then, pass the cable through the terminal hole and tighten the crimping screw through the crimping hole to connect the cable terminal to the terminal barrel;

[0014] Finally, connect the wiring barrel and tighten the flange, and pour electronic potting glue into the wiring barrel.

[0015] Compared with the prior art, the main structure of the utility model includes a wiring barrel and a tightening flange that are connected to each other, a cable wiring terminal arranged in the wiring barrel and a sealing disk that is in contact with the tightening flange. The cable wiring terminal is provided with a terminal hole, a crimping hole and a crimping screw, a through hole is opened on the tightening flange, and a sealing ring that wraps the cable is provided on the sealing disk. When in use, the cable is passed through the tightening flange, the sealing disk and the terminal hole in turn, the crimping screw is tightened, and after the cable wiring terminal is connected to the wiring barrel, electronic potting glue is poured into the wiring barrel, and the wiring barrel and the tightening flange are connected. The utility model has a simple and compact structure, a small size, saves space, and has a long service life, making power distribution safer, lower cost, more comprehensive functions, and a protection level of up to IP68, which can not only ensure that internal components are protected from external dust and water vapor, but also provide convenience for the construction, inspection and maintenance of cable joints. Description of the drawings:

[0016] Figure 1 This is a schematic diagram of the main structural principle of the utility model.

[0017] Figure 2 This is an exploded view of the main structure of the utility model.

[0018] Figure 3 This is a structural diagram of the tightening flange involved in the utility model.

[0019] Figure 4 The utility model is a schematic structural diagram of the cable terminal.

[0020] Figure 5 This is a structural diagram of the sealing disk involved in the utility model.

[0021] Figure 6 This is a schematic diagram of the physical object involved in Example 2 of the present utility model. Specific implementation method:

[0022] The present invention will be further described below through embodiments and in conjunction with the accompanying drawings.

[0023] Example 1:

[0024] A kind of street lamp diving safety connector involved in this embodiment has a protection level of IP68, and the main structure is as Figures 1-5 shown, including a wiring barrel 1, a tightening flange 2, a cable terminal 3, a sealing disc 4, a clamping joint 5, a large terminal hole 6, a small terminal hole 7, a large crimping hole 8, a small crimping hole 9, an 8# crimping screw 10, a 6# crimping screw 11, an inner inclined surface 12, an outer inclined surface 13, a large through hole 14, a small through hole 15, a large sealing ring 16, a small sealing ring 17, a plug 18, a thread 19 and a convex rib 20;

[0025] The cylindrical hollow wiring barrel 1 is threadedly connected to the tightening flange 2. A cable terminal 3 is arranged inside the wiring barrel 1, and the tightening flange 2 is connected to the sealing disc 4;

[0026] The wiring barrel 1 is connected to the cable terminal 3 through a groove arranged inside the wiring barrel 1 and a clamping joint 5 arranged on the cable terminal 3;

[0027] Among them, two through large terminal holes 6 and three small terminal holes 7 are arranged between the upper and lower surfaces of the cable terminal 3. Two large crimping holes 8 communicating with the large terminal holes 6 are arranged between two corresponding side surfaces. Three small crimping holes 9 communicating with the small terminal holes 7 are arranged between the other two corresponding side surfaces. An 8# crimping screw 10 is arranged in the large crimping hole 8, and a 6# crimping screw 11 is arranged in the small crimping hole 9;

[0028] The tightening flange 2 is connected to the sealing disc 4 through an inner inclined surface 12 arranged on the tightening flange 2 and an outer inclined surface 13 arranged on the sealing disc 4;

[0029] Among them, two large through holes 14 and two small through holes 15 are opened on the tightening flange 2. A plurality of large sealing rings 16 and small sealing rings 17 with a conical structure are arranged on the sealing disc 4. The number of both the large sealing rings 16 and the small sealing rings 17 is 2, and both have plugs 18. A thread 19 is arranged at the bottom of the wiring barrel 1, which is convenient for installation on the fixed beam inside the lamp post when hoisting is required. A plurality of convex ribs 20 are arranged at equal intervals on the side wall of the wiring barrel 1 to prevent the wiring barrel 1 from contacting or rubbing against the inner wall of the lamp post.

[0030] The wiring barrel 1 involved in this embodiment is of a transparent structure; the large terminal hole 6 is used for crimping the main cable, and the small terminal hole 7 is used for crimping branch cables below 10 square. The cooperation of the large crimping hole 8, the small crimping hole 9, the 8# crimping screw 10 and the 6# crimping screw 11 can withstand the safety tension while ensuring the cable contact area, effectively avoiding the accident of overheating and burning caused by the cable loosening due to the tension; the inner inclined surface 12 and the outer inclined surface 13 correspond and can be closely attached.

[0031] When the street lamp diving safety connector involved in this embodiment is in use:

[0032] First, insert the cable through the large through-hole 14 or the small through-hole 15 into the large sealing ring 16 or the small sealing ring 17. According to the cable size, remove the plug 18 of the large sealing ring 16 or the small sealing ring 17, so that the large sealing ring 16 or the small sealing ring 17 fits tightly with the cable. The inherent elasticity of the large sealing ring 16 and the small sealing ring 17 can tightly hold the cable;

[0033] Then, insert the cable into the large terminal hole 6 or the small terminal hole 7, tighten the 8# crimping screw 10 or the 6# crimping screw 11 through the large crimping hole 8 or the small crimping hole 9, and embed the card joint 5 into the groove to connect the cable terminal 3 with the wiring barrel 1;

[0034] Finally, tighten the wiring barrel 1 and the tightening flange 2 to connect them. Pour the electronic potting adhesive into the wiring barrel 1 to completely cover the cable joint. The sealing function of the sealing disc 4 can ensure that the protection level reaches IP68 and avoid the problem of glue leakage of the electronic potting adhesive;

[0035] After the electronic potting adhesive is cured, it can prevent any water and air from directly contacting the cable joint, ensuring the power safety and continuous operation in harsh environments such as flooding;

[0036] The above-mentioned electronic potting adhesive is composed of vinyl silicone oil and hydrogen-containing silicone oil mixed in a volume ratio of 1:1. It can be cured within 30 minutes after being mixed evenly. After curing, it has transparency, which can clearly check the operation of the cable terminal and provide convenience for construction, operation and maintenance.

[0037] Embodiment 2:

[0038] A diving safety connector involved in this embodiment is as shown in Figure 6 shown. Install the electronic potting adhesive in the wiring barrel 1 made of transparent PC material. The protection level can reach IP68, which can completely isolate electricity from water and air, avoid the charged body touching the pole body of the street lamp pole, and prevent electric leakage and electric shock accidents. It has a dual protection function and can provide normal and safe power supply even in case of long-term flooding. The service life can reach more than 20 years.

Claims

1. A street lamp diving safety connector, characterized in that, The main body structure includes a connection barrel and a tightening flange that are connected to each other, as well as a cable terminal in the connection barrel and a sealing plate connected to the tightening flange.

2. The underwater safety connector for street lamps according to claim 1, characterized in that, A number of through holes are provided on the tightening flange, and a number of sealing rings with plugs are provided on the sealing plate.

3. The underwater safety wiring connector for street lamps according to claim 2, characterized in that, A number of through terminal holes are provided between the upper and lower surfaces of the cable terminal, and a number of crimping holes are provided between two corresponding side surfaces, and crimping screws are provided in the crimping holes.

4. The street lamp diving safety wiring connector according to any one of claims 1-3, characterized in that, The connection barrel is connected to the tightening flange in a threaded manner or a snap connection manner.

5. The underwater safety connector for street lamps according to claim 4, characterized in that, The connection barrel is connected to the cable terminal through a groove provided in the connection barrel and a card joint provided on the cable terminal.

6. The underwater safety wiring connector for street lamps according to claim 4, wherein, There are two through large terminal holes and three small terminal holes between the upper and lower surfaces of the cable terminal. There are two large crimping holes communicating with the large terminal holes between two corresponding side surfaces, and there are three small crimping holes communicating with the small terminal holes between the other two corresponding side surfaces. 8# crimping screws are provided in the large crimping holes, and 6# crimping screws are provided in the small crimping holes.

7. The underwater safety wiring connector for street lamps according to claim 4, wherein, The tightening flange is connected to the sealing plate by connecting the inner inclined surface provided on the tightening flange and the outer inclined surface provided on the sealing plate.

8. The street lamp diving safety wiring connector according to claim 4, characterized in that, Two large through holes and two small through holes are provided on the tightening flange, and a number of large sealing rings and small sealing rings with a conical structure are provided on the sealing plate. The number of large sealing rings and small sealing rings is 2 each.

9. The street lamp diving safety wiring connector according to claim 4, wherein, The end of the connection barrel is provided with a thread, and the side wall is provided with a rib.

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