Waterproof wiring equipment for electrical system

Abstract

The invention relates to the technical field of wiring equipment, in particular to waterproof wiring equipment for an electrical system, which comprises a connecting box, a wiring terminal and two bobbins. The wiring terminal and the two bobbins are all installed in the connecting box. The cables and the bobbins are arranged in a one-to-one correspondence mode, the cables can stretch into the bobbins arranged correspondingly and are inserted into the wiring terminals, and when the cables stretch into the bobbins, the bobbins can enable the outer surfaces of the insulating skins to abut against the inner surface of the connecting box. According to the waterproof wiring equipment for the electrical system, the connecting box, the wiring terminal and the two bobbins are arranged to be matched, the integrally-formed connecting box structure is adopted, butt joint faces on the connecting box can be reduced, water is prevented from entering from gaps of the connecting box, cables are designed in an external insertion mode, operation is easier and more convenient, and the waterproof wiring equipment is more convenient to use. The arrangement of the wire cylinder can guide the two copper wires, and also can compress the gap between the insulating skin and the connecting box, thereby improving the waterproof effect.

Description

Technical Field

[0001] The present invention relates to the technical field of wiring equipment, and particularly relates to a waterproof wiring equipment for an electrical system. Background Art

[0002] In an electrical system, a junction box, as a key transition component for wire connection, is widely used in the construction field. Its core function is to provide a safe connection space for wire joints and protect the circuit from external environmental interference.

[0003] Existing junction boxes usually adopt a split design and connect the two split parts through a sealing gasket and screws. Moreover, in order to save space, the junction box is generally closely arranged with the internal terminal blocks. When construction workers connect wires and terminal blocks, the operation is very inconvenient, and water is easily infiltrated into the junction box, causing the wires to get damp and malfunction.

[0004] Chinese Patent CN210517139U discloses a wire connector with an integrally formed main body design. Although it can prevent water from infiltrating into the junction box to a certain extent, in order to realize the crimping and sealing of wires, multiple end grooves and side wire grooves are opened on the main body for wiring. When connecting, the wire needs to pass through the grooves in sequence, and the contact connection is completed through multiple components such as a cable fixing ball, an elastic conductive block, and a ball fixing insertion cylinder. The installation steps are cumbersome. In addition, the setting of numerous groove openings increases the additional sealing requirements, significantly improving the difficulty of waterproof treatment and making it difficult to meet the long-term reliable waterproof requirements. Summary of the Invention

[0005] The present invention provides a waterproof wiring equipment for an electrical system to solve the problems of poor waterproof performance and inconvenient installation of existing wiring equipment.

[0006] The waterproof wiring equipment for an electrical system of the present invention adopts the following technical solution: A waterproof wiring equipment for an electrical system is used to connect two cables, and includes a connection box, terminal blocks, and two wire barrels; the terminal blocks and the two wire barrels are both installed in the connection box, and the two wire barrels are respectively located on both sides of the terminal blocks in a first direction, and the first direction is the axial direction of the cable; the cable includes two copper wires and an insulating skin covering the two copper wires, and the two copper wires are arranged side by side in a second direction, and the second direction is perpendicular to the first direction; the cables and the wire barrels are arranged in one-to-one correspondence, and the cable can extend into the corresponding wire barrel along the first direction and be inserted into the terminal block. When the cable extends into the wire barrel, the wire barrel can respectively cover the outer surfaces of the two copper wires and abut against the inner surface of the insulating skin, and make the outer surface of the insulating skin abut against the inner surface of the connection box.

[0007] Further, the terminal includes an insulating housing and two crimping groups which are arranged side by side in the insulating housing along the second direction; each crimping group includes a gasket and two crimping pieces. The gasket is arranged in the insulating housing along the first direction. The crimping pieces are elastic. The two crimping pieces in the same crimping group are arranged face to face in the insulating housing along the first direction and are connected by a conducting piece. The gasket and the two crimping pieces are arranged in sequence along the third direction, and the third direction is perpendicular to the first direction and the second direction respectively. In the initial state, the distance between the gasket and the crimping pieces along the third direction is smaller than the diameter of the copper wire.

[0008] Further, the wire barrel can slide in the connection box along the first direction; each crimping group further includes two pressure rods which are both arranged along the first direction and can slide in the insulating housing along the first direction; the pressure rods are arranged in one-to-one correspondence with the crimping pieces. The ends of the two pressure rods which are close to each other in the first direction can respectively abut against the corresponding crimping pieces, and the ends of the two pressure rods which are far away from each other in the first direction both extend out of the insulating housing and abut against the adjacent wire barrel.

[0009] Further, one end of the crimping piece is connected to the conducting piece, and the other end is suspended for crimping the copper wire, and the suspended part of the crimping piece is wavy.

[0010] Further, the wire barrel includes a limiting block and a connecting barrel which are arranged in sequence and fixedly connected in the first direction. The limiting block is located on the side of the connecting barrel close to the insulating housing in the first direction; the end face of the insulating skin on the side close to the limiting block in the first direction can abut against the limiting block; two through holes which penetrate through in the first direction are formed in the limiting block, and the two through holes are arranged side by side in the second direction; the connecting barrel includes two barrel bodies which are arranged face to face and fixedly connected in the second direction, and the barrel body is communicated with the through hole on the same side of it in the second direction; a middle expanding strip is arranged at the connection of the two barrel bodies, and the middle expanding strip is coaxially arranged with the cable and extends out along the first direction to the side away from the limiting block.

[0011] Further, a blade-shaped cutter head is arranged at the end of the middle expanding strip away from the limiting block in the first direction.

[0012] Further, the opening formed by the end face of the barrel body away from the limiting block in the first direction is elliptical.

[0013] Further, it also includes two connecting pieces, which are arranged in one-to-one correspondence with the two cables; the connecting piece includes a locking cylinder, a pressing cylinder and a clamping cylinder; the locking cylinder, the pressing cylinder and the clamping cylinder are arranged in sequence in the first direction and are all sleeved on the cable. The locking cylinder is located on the side of the pressing cylinder close to the cable cylinder in the first direction, and the locking cylinder is in threaded cooperation with the connection box; one end of the pressing cylinder in the first direction is in rotational cooperation with the locking cylinder, so that the locking cylinder can rotate relative to the pressing cylinder and can move synchronously with the pressing cylinder in the first direction; a plurality of pressing pieces are arranged at the other end of the pressing cylinder in the first direction. The pressing pieces are elastic, and the plurality of pressing pieces are evenly distributed in the circumferential direction of the pressing cylinder. The clamping cylinder is in threaded cooperation with the pressing cylinder, and when the clamping cylinder is installed on the pressing cylinder, the plurality of pressing pieces can clamp the cable and enable the cable to move with the pressing cylinder.

[0014] Further, the connection box includes an installation box and two installation cylinders. The two installation cylinders are respectively fixedly installed at both ends of the installation box in the first direction and are both communicated with the installation box. The installation cylinder and the installation box are of an integrally formed structure; the wiring terminal is installed in the installation box, and the cable cylinder is installed in the installation cylinder.

[0015] Further, a sealing strip is arranged on the inner peripheral wall surface of the installation cylinder.

[0016] The beneficial effects of the present invention are as follows: A waterproof wiring device for an electrical system of the present invention is provided with a connection box, a wiring terminal and two cable cylinders in cooperation. By adopting an integrally formed connection box structure, the butt joint surfaces on the connection box can be reduced, and water can be prevented from entering through the gaps of the connection box. The cable adopts an external insertion design, which can not only be used in combination with the cable cylinder for guiding and splitting wires, simplifying the wiring process, but also enable the cable to be positioned by the cable cylinder when the cable extends into the cable cylinder, facilitating the subsequent crimping of the copper wire with the wiring terminal and reducing the operation difficulty; while guiding the two copper wires, the cable cylinder also promotes the expansion of the insulating skin outside the cable towards the side close to the inner peripheral wall surface of the connection box, pressing the gap between the insulating skin and the connection box tightly to improve the waterproof effect. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a waterproof wiring device for an electrical system of the present invention; Figure 2 It is a schematic diagram of the internal structure of an embodiment of a waterproof wiring device for an electrical system of the present invention; Figure 3Cross-sectional view of the overall structure of an embodiment of a waterproof wiring device for an electrical system according to the present invention; Figure 4 Schematic diagram of a cable and a bobbin of an embodiment of a waterproof wiring device for an electrical system according to the present invention; Figure 5 Cross-sectional view of a connection box of an embodiment of a waterproof wiring device for an electrical system according to the present invention; Figure 6 Cross-sectional view of a terminal of an embodiment of a waterproof wiring device for an electrical system according to the present invention; Figure 7 is Figure 6 the enlarged view at A in Figure 8 Schematic diagram of a bobbin of an embodiment of a waterproof wiring device for an electrical system according to the present invention; Figure 9 Cross-sectional view of a bobbin of an embodiment of a waterproof wiring device for an electrical system according to the present invention; Figure 10 Cross-sectional view after installation of a cable and a connector of an embodiment of a waterproof wiring device for an electrical system according to the present invention.

[0019] In the figure: 100, cable; 110, copper wire; 120, insulating skin; 200, connection box; 210, installation box; 220, installation cylinder; 230, bolt; 300, terminal; 310, insulating housing; 320, crimping group; 321, gasket; 322, crimping piece; 323, connecting piece; 324, pressing rod; 400, bobbin; 410, limiting block; 420, connecting cylinder; 421, cylinder body; 422, middle expanding strip; 423, cutter head; 500, connector; 510, locking cylinder; 520, pressing cylinder; 521, pressing piece; 530, clamping cylinder. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] An embodiment of a waterproof wiring device for an electrical system according to the present invention is as Figures 1 to 10 shown.

[0022] A waterproof wiring device for an electrical system, which is used to connect two cables 100, includes a connection box 200, a wiring terminal 300, and two wire cylinders 400. The wiring terminal 300 and the two wire cylinders 400 are both installed in the connection box 200. The two wire cylinders 400 are respectively located on both sides of the wiring terminal 300 in the first direction, and the first direction is the axial direction of the cable 100. The cable 100 includes two copper wires 110 and an insulating skin 120 wrapped around the two copper wires 110. The two copper wires 110 are arranged side by side in the second direction, and the second direction is perpendicular to the first direction. The cables 100 and the wire cylinders 400 are arranged in one-to-one correspondence. The cable 100 can extend into the wire cylinder 400 corresponding to it in the first direction and be inserted into the wiring terminal 300. When the cable 100 extends into the wire cylinder 400, the wire cylinder 400 can respectively wrap around the outer surfaces of the two copper wires 110 and abut against the inner surface of the insulating skin 120, and make the outer surface of the insulating skin 120 abut against the inner surface of the connection box 200.

[0023] In this embodiment, by setting the connection box 200, the wiring terminal 300 and the two wire cylinders 400 to cooperate, during installation, taking one of the cables 100 as an example, the insulating skin 120 at one end of the cable 100 is peeled off to expose the two copper wires 110 inside the cable 100. Then hold the cable 100 and extend it into the wire cylinder 400 corresponding to this cable 100, and after passing through the wire cylinder 400, insert the two copper wires 110 into the interior of the wiring terminal 300. And during this process, the wire cylinder 400 will extend into the insulating skin 120 of the cable 100 and wrap the two copper wires 110 respectively, assisting in separating the two copper wires 110, facilitating the subsequent crimping of the copper wires 110 with the wiring terminal 300, and the wire cylinder 400 will also cause the insulating skin 120 outside it to expand towards the side close to the inner peripheral wall surface of the connection box 200, so that the two are pressed tightly.

[0024] This embodiment adopts an integrally formed structure of the connection box 200, which can reduce the butt joint surfaces on the connection box 200 and prevent water from entering through the gaps of the connection box 200. The cable 100 adopts an external insertion design, which is more convenient to operate. The setting of the wire cylinder 400 can not only guide the two copper wires 110, but also press the gap between the insulating skin 120 and the connection box 200 tightly, improving the waterproof effect.

[0025] Specifically, the connection box 200 includes an installation box 210 and two installation cylinders 220. The two installation cylinders 220 are respectively fixedly installed at both ends of the installation box 210 in the first direction and are both communicated with the installation box 210. The installation cylinder 220 and the installation box 210 are of an integrally formed structure. The wiring terminal 300 is installed in the installation box 210, and the wire cylinder 400 is installed in the installation cylinder 220. The installation box 210 is connected to the ground or other structures to be installed through bolts 230.

[0026] Furthermore, a sealing strip is provided on the inner peripheral wall surface of the installation cylinder 220.

[0027] By providing the sealing strip, the sealing performance between the insulating skin 120 and the installation cylinder 220 can be further improved, and the waterproof effect can be further enhanced.

[0028] In a further embodiment, the terminal 300 includes an insulating housing 310 and two crimping groups 320. The two crimping groups 320 are arranged in parallel in the insulating housing 310 along the second direction. The crimping group 320 is used to connect any copper wire 110 inside one of the cables 100 and the copper wire 110 inside another cable 100 that is on the same side as the copper wire 110 in the second direction.

[0029] The crimping group 320 includes a gasket 321 and two crimping pieces 322. The gasket 321 is arranged in the insulating housing 310 along the first direction. The crimping piece 322 has elasticity. The two crimping pieces 322 in the same crimping group 320 are arranged face to face in the insulating housing 310 in the first direction and are connected by a connecting piece 323. The gasket 321, the two crimping pieces 322 are arranged in sequence in the third direction, the third direction is perpendicular to the first direction and the second direction respectively. In the initial state, the distance between the gasket 321 and the crimping piece 322 in the third direction is smaller than the diameter of the copper wire 110, so that when the copper wire 110 extends into the crimping piece 322 and the gasket 321, the crimping piece 322 can crimp the copper wire 110.

[0030] Specifically, one end of the crimping piece 322 is connected to the connecting piece 323, and the other end is suspended for crimping the copper wire 110, and the suspended part of the crimping piece 322 is wavy. By making the part of the crimping piece 322 that crimps the copper wire 110 wavy, the number of crimping points between the copper wire 110 and the crimping piece 322 can be increased, and the conduction effect can be improved.

[0031] In a further embodiment, the wire cylinder 400 includes a limiting block 410 and a connecting cylinder 420. The limiting block 410 and the connecting cylinder 420 are arranged in sequence and fixedly connected in the first direction. The limiting block 410 is located on the side of the connecting cylinder 420 closer to the insulating housing 310 in the first direction. The limiting block 410 and the connecting cylinder 420 are an integrally formed structure. The end face of the insulating skin 120 on the side closer to the limiting block 410 in the first direction can abut against the limiting block 410.

[0032] The limiting block 410 is provided with two through holes penetrating in the first direction, and the two through holes are arranged side by side in the second direction. The connecting cylinder 420 includes two cylinder bodies 421, the two cylinder bodies 421 are arranged face to face in the second direction and fixedly connected, and the cylinder body 421 communicates with the through hole on its same side in the second direction. A middle expansion strip 422 is arranged at the connection of the two cylinder bodies 421, the middle expansion strip 422 is coaxially arranged with the cable 100, the middle expansion strip 422 extends away from the limiting block 410 in the first direction, and a blade-shaped cutter head 423 is arranged at one end of the middle expansion strip 422 away from the limiting block 410 in the first direction.

[0033] Further, the two cylinder bodies 421 have the same structure, and the opening formed by the end surface of the cylinder body 421 at the end away from the limiting block 410 in the first direction is elliptical.

[0034] By arranging the cooperation of the limiting block 410 and the connecting cylinder 420, during wiring, the copper wire 110 enters from the elliptical opening on the cylinder body 421 and passes through the through hole on the same side as the cylinder body 421 in the second direction. Subsequently, the middle expansion strip 422 will gradually be inserted between the two copper wires 110, and the cylinder body 421 will be inserted between the insulating skin 120 and the copper wire 110. As the cable 100 moves, the cylinder body 421 will also gradually separate the copper wire 110 from the insulating skin 120 completely along the circumferential wall surface of the copper wire 110 and be located between the copper wire 110 and the insulating skin 120. When the end surface of the insulating skin 120 abuts against the end surface of the limiting block 410, the cable 100 stops moving. At this time, the copper wire 110 is crimped by the corresponding crimping piece 322, the copper wires 110 of the two cables 100 in the same crimping group 320 are conducted, and the part of the insulating skin 120 expanded by the cylinder body 421 is further pressed against the inner surface of the installation cylinder 220, improving the sealing performance between the insulating skin 120 and the installation cylinder 220.

[0035] Or, further, the wire cylinder 400 can slide in the installation cylinder 220 in the first direction. The crimping group 320 further includes two pressure rods 324, both of the two pressure rods 324 are arranged in the first direction and can slide in the insulating housing 310 in the first direction. The pressure rods 324 are arranged in one-to-one correspondence with the crimping pieces 322, and the ends of the two pressure rods 324 close to each other in the first direction can respectively abut against the corresponding crimping pieces 322. The ends of the two pressure rods 324 away from each other in the first direction both extend out of the insulating housing 310 and abut against the adjacent limiting block 410.

[0036] As the copper wire 110 enters through the oval opening on the cylinder body 421, passes through the through hole on the same side as the cylinder body 421 in the second direction, and finally enters between the crimping piece 322 and the gasket 321, the entire wire cylinder 400 will also be driven to move by the resistance of the cable 100 moving. The movement of the wire cylinder 400 will push the pressure rod 324 to move, causing the pressure rod 324 to apply force to the crimping piece 322, increasing the acting force of the crimping piece 322 on the copper wire 110, and improving the fastening of the crimping.

[0037] In a further embodiment, a waterproof wiring device for an electrical system further includes two connectors 500, and the two connectors 500 are arranged in one-to-one correspondence with two cables 100. The connector 500 includes a locking cylinder 510, a pressing cylinder 520, and a clamping cylinder 530. The locking cylinder 510, the pressing cylinder 520, and the clamping cylinder 530 are sequentially arranged in the first direction and are all sleeved on the cable 100. The locking cylinder 510 is located on the side of the pressing cylinder 520 close to the wire cylinder 400 in the first direction, and the locking cylinder 510 is in threaded cooperation with the mounting cylinder 220. One end of the pressing cylinder 520 in the first direction is in rotational cooperation with the locking cylinder 510, so that the locking cylinder 510 can rotate relative to the pressing cylinder 520 and can move synchronously with the pressing cylinder 520 in the first direction. A plurality of pressing pieces 521 are fixedly arranged at the other end of the pressing cylinder 520 in the first direction, and the pressing pieces 521 are elastic. The plurality of pressing pieces 521 are evenly distributed in the circumferential direction of the pressing cylinder 520, and the plurality of pressing pieces 521 are integrally formed with the pressing cylinder 520. The clamping cylinder 530 is in threaded cooperation with the pressing cylinder 520, and when the clamping cylinder 530 is installed on the pressing cylinder 520, the plurality of pressing pieces 521 can clamp the cable 100 and enable the cable 100 to move with the pressing cylinder 520.

[0038] Specifically, a ring groove is provided in the circumferential direction of the pressing cylinder 520, and an annular protrusion is provided on the inner peripheral wall surface of the locking cylinder 510. The annular protrusion is in rotational cooperation with the ring groove, so that the locking cylinder 510 can rotate relative to the pressing cylinder 520 and can move synchronously with the pressing cylinder 520 in the first direction.

[0039] The clamping cylinder 530 includes a screwing section and a clamping section. The screwing section and the clamping section are sequentially arranged and fixedly connected in the first direction. The screwing section is in threaded cooperation with the pressing cylinder 520. The clamping section can be in pressure contact with the pressing pieces 521, and the inner diameter of the clamping section is smaller than the outer diameter of the plurality of pressing pieces 521 after being sleeved on the cable 100. Therefore, when the clamping cylinder 530 is installed on the pressing cylinder 520, the clamping section will tighten the plurality of pressing pieces 521 to clamp the cable 100 and enable the cable 100 to move with the pressing cylinder 520.

[0040] In this embodiment, by providing a connecting member 500, during use, first slip the locking cylinder 510 and the pressing cylinder 520 onto the cable 100. Then hold the cable 100 and move it, aligning the copper conductors 110 on the cable 100 with the oval openings on the cylinder body 421. When the cable 100 is moved to a position where the threads inside the locking cylinder 510 are about to mate with the threads outside the mounting cylinder 220, install the clamping cylinder 530 on the pressing cylinder 520. Then rotate the locking cylinder 510, which drives the pressing cylinder 520 and the clamping cylinder 530 to move. The movement of the clamping cylinder 530 will drive the cable 100 to move. After the end face of the insulating sheath 120 abuts against the end face of the limiting block 410, the cable 100 stops moving, completing the installation of the cable 100.

[0041] By threading the locking cylinder 510 onto the mounting cylinder 220, the mounting cylinder 220 is protected, further improving the waterproof effect between the part of the insulating sheath 120 expanded by the cylinder body 421 and the inner surface of the mounting cylinder 220. On this basis, the clamping cylinder 530 and the pressing cylinder 520 are used to clamp the cable 100, causing them to move synchronously. When the cable 100 has a tendency to slip out of the crimping piece 322, the locking cylinder 510, the pressing cylinder 520, and the clamping cylinder 530 will restrict the movement of the cable 100, preventing the cable 100 from loosening and enhancing the connection strength between the cable 100 and the connection box 200.

[0042] Combining the above embodiments, the specific working process is as follows: During installation, taking one of the cables 100 as an example, strip the insulating sheath 120 at one end of the cable 100 to expose the two copper conductors 110 inside the cable 100. Then slip the locking cylinder 510 and the pressing cylinder 520 onto the cable 100. Hold the cable 100 and move it, aligning the copper conductors 110 on the cable 100 with the oval openings on the cylinder body 421. Feed the copper conductors 110 through the oval openings on the cylinder body 421 and through the through holes on the same side as the cylinder body 421 in the second direction. Subsequently, the middle expanding strip 422 will gradually insert between the two copper conductors 110, and the cylinder body 421 will insert between the insulating sheath 120 and the copper conductors 110. As the cable 100 moves, the cylinder body 421 will also gradually separate the copper conductors 110 from the insulating sheath 120 along the circumferential wall surface of the copper conductors 110 and be located between the copper conductors 110 and the insulating sheath 120.

[0043] And when the threads inside the locking cylinder 510 are about to mate with the threads outside the mounting cylinder 220, install the clamping cylinder 530 on the pressing cylinder 520. Then rotate the locking cylinder 510, which drives the pressing cylinder 520 and the clamping cylinder 530 to move. The movement of the clamping cylinder 530 will drive the cable 100 to move.

[0044] When the end face of the insulating sheath 120 abuts against the end face of the limiting block 410, the cable 100 stops moving further. At this time, the copper conductor 110 is crimped by the corresponding crimping piece 322. The copper conductors 110 of the two cables 100 within the same crimping group 320 are electrically connected, and the part of the insulating sheath 120 that is expanded by the cylinder body 421 is further pressed against the inner surface of the mounting cylinder 220, improving the sealing performance between the insulating sheath 120 and the mounting cylinder 220.

[0045] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A waterproof wiring device for an electrical system, used to connect two cables, characterized in that: It includes a connection box, terminal blocks, and two wire barrels; the terminal blocks and the two wire barrels are both installed inside the connection box, and the two wire barrels are respectively located on both sides of the terminal block in the first direction, and the first direction is the axial direction of the cable; the cable includes two copper conductors and an insulating skin covering the two copper conductors, and the two copper conductors are arranged in parallel in the second direction, and the second direction is perpendicular to the first direction; the cables and the wire barrels are arranged in one-to-one correspondence, and the cable can extend into the wire barrel corresponding to it in the first direction and be inserted into the terminal block. When the cable extends into the wire barrel, the wire barrel can respectively cover the outer surfaces of the two copper conductors and abut against the inner surface of the insulating skin, and make the outer surface of the insulating skin abut against the inner surface of the connection box.

2. The waterproof wiring device for an electrical system according to claim 1, characterized in that: The terminal block includes an insulating housing and two crimping groups, and the two crimping groups are arranged in parallel in the insulating housing in the second direction; each crimping group includes a gasket and two crimping pieces, the gasket is arranged in the insulating housing in the first direction, the crimping pieces are elastic, and the two crimping pieces in the same crimping group are arranged face to face in the insulating housing in the first direction and are connected by a connecting piece; the gasket and the two crimping pieces are arranged in parallel in the third direction, and the third direction is perpendicular to the first direction and the second direction respectively. In the initial state, the distance between the gasket and the crimping pieces in the third direction is smaller than the diameter of the copper conductor.

3. The waterproof wiring device for an electrical system according to claim 2, characterized in that: The wire barrel can slide in the connection box in the first direction; each crimping group further includes two pressure rods, both of the two pressure rods are arranged in the first direction and can slide in the insulating housing in the first direction; the pressure rods and the crimping pieces are arranged in one-to-one correspondence, and the ends of the two pressure rods close to each other in the first direction can respectively abut against the crimping pieces corresponding to them, and the ends of the two pressure rods far from each other in the first direction both extend out of the insulating housing and abut against the adjacent wire barrel.

4. The waterproof wiring device for an electrical system according to claim 2, characterized in that: One end of the crimping piece is connected to the connecting piece, and the other end is suspended for crimping the copper conductor, and the suspended part of the crimping piece is wavy.

5. The waterproof wiring device for an electrical system according to claim 2, characterized in that: The wire barrel includes a limiting block and a connecting barrel, the limiting block and the connecting barrel are arranged in sequence and fixedly connected in the first direction, and the limiting block is located on the side of the connecting barrel close to the insulating housing in the first direction; the end face of the insulating skin on the side close to the limiting block in the first direction can abut against the limiting block; two through holes penetrating in the first direction are formed in the limiting block, and the two through holes are arranged in parallel in the second direction; the connecting barrel includes two barrel bodies, the two barrel bodies are arranged face to face and fixedly connected in the second direction, and the barrel body is communicated with the through hole on the same side as it in the second direction; a middle expanding strip is arranged at the connection of the two barrel bodies, the middle expanding strip is coaxially arranged with the cable, and the middle expanding strip extends outwards in the first direction away from the limiting block.

6. The waterproof wiring device for an electrical system according to claim 5, characterized in that: A blade-shaped cutter head is arranged at the end of the middle expanding strip away from the limiting block in the first direction.

7. The waterproof wiring device for an electrical system according to claim 5, wherein: The opening formed by the end face of the barrel body away from the limiting block in the first direction is oval.

8. The waterproof wiring device for an electrical system according to claim 1, wherein: It further includes two connecting members, which are arranged in one-to-one correspondence with the two cables; the connecting member includes a locking cylinder, a pressing cylinder and a clamping cylinder; the locking cylinder, the pressing cylinder and the clamping cylinder are arranged in sequence in the first direction and are all sleeved on the cable. The locking cylinder is located on the side of the pressing cylinder close to the cable drum in the first direction, and the locking cylinder is in threaded cooperation with the connection box; one end of the pressing cylinder in the first direction is in rotational cooperation with the locking cylinder, so that the locking cylinder can rotate relative to the pressing cylinder and can move synchronously with the pressing cylinder in the first direction; a plurality of pressing pieces are arranged at the other end of the pressing cylinder in the first direction, the pressing pieces are elastic, and the plurality of pressing pieces are evenly distributed in the circumferential direction of the pressing cylinder. The clamping cylinder is in threaded cooperation with the pressing cylinder, and when the clamping cylinder is installed on the pressing cylinder, the plurality of pressing pieces can clamp the cable and enable the cable to move with the pressing cylinder.

9. The waterproof wiring device for an electrical system according to claim 1, characterized in that: The connection box includes an installation box and two installation cylinders. The two installation cylinders are respectively fixedly installed at both ends of the installation box in the first direction and are both communicated with the installation box. The installation cylinder and the installation box are of an integrally formed structure; the terminal is installed in the installation box, and the cable drum is installed in the installation cylinder.

10. The waterproof wiring device for an electrical system according to claim 9, wherein: A sealing strip is arranged on the inner peripheral wall surface of the installation cylinder.

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