Waterproof wiring device for electrical system

Abstract

The present invention relates to the technical field of wiring equipment, and in particular to a waterproof wiring equipment for an electrical system, comprising a connection box, a connection terminal and two wire drums. The connection terminal and the two wire drums are both installed in the connection box. The cables and the wire drums are arranged in a one-to-one correspondence, and the cables can extend into the wire drums arranged corresponding thereto and inserted into the connection terminal, and when the cables extend into the wire drums, the wire drums can make the outer surface of the insulation skin contact the inner surface of the connection box. A waterproof wiring equipment for an electrical system of the present invention adopts an integrally formed connection box structure by providing a connection box, a connection terminal and two wire drums, which can reduce the docking surface on the connection box and prevent water from entering through the gap of the connection box. The cable adopts an external plug-in design, which is easier to operate. The setting of the wire drum can not only guide the two copper wires, but also press the gap between the insulation skin and the connection box to improve the waterproof effect.

Description

Technical Field

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

[0002] In electrical systems, junction boxes are key transition components for wire connections and are widely used in the construction field. Their core function is to provide a safe connection space for wire connectors and protect the lines from interference from the external environment.

[0003] Existing junction boxes usually adopt a split design, with the two parts connected by sealing pads and screws. In order to save space, the junction box is generally set closely with the wiring terminals inside. It is very inconvenient for construction workers to connect the wires and the wiring terminals. Water can easily penetrate into the junction box, causing the wires to become damp and cause malfunctions.

[0004] Chinese patent CN210517139U discloses a wire connector with an integrated main body design. Although it can prevent water from penetrating into the junction box to a certain extent, in order to achieve crimping and sealing of the wires, multiple end grooves and side wire grooves are opened on the main body for connection. When connecting, the wires need to pass through the grooves in sequence and complete the contact connection through multiple components such as cable fixing balls, elastic conductive blocks and ball fixing inserts. The installation steps are cumbersome. In addition, the provision of numerous groove openings also increases additional sealing requirements, making the waterproofing treatment significantly more difficult and difficult to meet long-term reliable waterproofing requirements. Summary of the Invention

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

[0006] A waterproof wiring device for an electrical system of the present invention adopts the following technical solution: a waterproof wiring device for an electrical system, used to connect two cables, including a connection box, a connection terminal and two wire drums; the connection terminal and the two wire drums are all installed in the connection box, and the two wire drums are respectively located on both sides of the connection terminal 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 wrapped on 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 cable and the wire drum are arranged in a one-to-one correspondence, and the cable can be extended into the wire drum corresponding to it along the first direction and inserted into the connection terminal, and when the cable is extended into the wire drum, the wire drum can be respectively covered on the outer surfaces of the two copper wires and abut against the inner surface of the insulating skin, and the outer surface of the insulating skin abuts against the inner surface of the connection box.

[0007] Furthermore, the terminal includes an insulating shell and two crimping groups, which are arranged side by side along the second direction in the insulating shell; the crimping group includes a gasket and two crimping plates, the gasket is arranged along the first direction in the insulating shell, the crimping plates are elastic, and the two crimping plates in the same crimping group are arranged face to face in the first direction in the insulating shell and are connected by a connecting guide plate; the gasket and the two crimping plates are arranged in sequence in a 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 plate in the third direction is smaller than the diameter of the copper wire.

[0008] Furthermore, the wire drum can slide along the first direction in the connection box; the crimping group also includes two pressure rods, both of which are arranged along the first direction and can slide along the first direction in the insulating shell; the pressure rods and the crimping pieces are arranged in a one-to-one correspondence, and the ends of the two pressure rods that are 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 that are away from each other in the first direction both extend out of the insulating shell and abut against their adjacent wire drums.

[0009] Furthermore, one end of the crimping piece is connected to the connecting conductor, and the other end is suspended for crimping the copper wire, and the suspended portion of the crimping piece is wavy.

[0010] Furthermore, the wire barrel includes a limit block and a connecting barrel, which are arranged in sequence and fixedly connected in the first direction, and the limit block is located on the side of the connecting barrel close to the insulating shell in the first direction; the end face of the insulating skin close to the limit block in the first direction can abut against the limit block; two through holes are provided on the limit block, which pass through the limit block in the first direction, and the two through holes are arranged side by side in the second direction; the connecting barrel includes two cylinders, which are arranged face to face and fixedly connected in the second direction, and the cylinders are connected to the through holes on the same side in the second direction; a middle expansion strip is provided at the connection of the two cylinders, and the middle expansion strip is coaxially arranged with the cable, and extends along the first direction to the side away from the limit block.

[0011] Furthermore, a blade-like cutting head is provided at one end of the middle expansion strip in the first direction away from the limiting block.

[0012] Furthermore, the opening formed on the end surface of the cylinder at one end away from the limiting block along the first direction is elliptical.

[0013] Furthermore, it also includes two connecting parts, which are arranged in a one-to-one correspondence with the two cables; the connecting parts include 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 with the cable, the locking cylinder is located on the side of the pressing cylinder close to the wire cylinder in the first direction, and the locking cylinder is threadedly engaged with the connecting box; one end of the pressing cylinder in the first direction is rotatably engaged 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 plates are provided at the other end of the pressing cylinder in the first direction, the pressing plates are elastic, and the plurality of pressing plates are evenly distributed in the circumferential direction of the pressing cylinder, the clamping cylinder is threadedly engaged with the pressing cylinder, and when the clamping cylinder is installed on the pressing cylinder, the plurality of pressing plates can clamp the cable and enable the cable to move with the pressing cylinder.

[0014] Furthermore, the connection box includes an installation box and two installation tubes, which are respectively fixedly installed at both ends of the installation box in the first direction and are both connected to the installation box. The installation tubes and the installation box are an integrally formed structure; the wiring terminal is installed in the installation box, and the wire reel is installed in the installation tube.

[0015] Furthermore, a sealing strip is provided 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 terminal block, and two wire barrels, and adopts an integrally formed connection box structure, which can reduce the butt joint surface on the connection box and prevent water from entering through the gap of the connection box. The cable adopts an external plug-in design, which can not only be used with the wire barrel for guiding and dividing the wires, simplifying the wiring process, but also can position the cable by the wire barrel when the cable is inserted into the wire barrel, facilitating the subsequent crimping of the copper wire with the terminal block, reducing the difficulty of operation; while guiding the two copper wires, the wire barrel will also cause the insulation on the outside of the cable to expand toward the side close to the inner wall of the connection box, compressing the gap between the insulation and the connection box, and improving the waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the overall structure of an embodiment of a waterproof wiring device for an electrical system of the present invention;

[0019] Figure 2 A schematic diagram of the internal structure of an embodiment of a waterproof wiring device for an electrical system of the present invention;

[0020] Figure 3 A cross-sectional view of the overall structure of an embodiment of a waterproof wiring device for an electrical system of the present invention;

[0021] Figure 4 A schematic diagram of a cable and a wire drum of an embodiment of a waterproof wiring device for an electrical system of the present invention;

[0022] Figure 5 A cross-sectional view of a connection box of an embodiment of a waterproof wiring device for an electrical system of the present invention;

[0023] Figure 6 A cross-sectional view of a connection terminal of an embodiment of a waterproof connection device for an electrical system according to the present invention;

[0024] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0025] Figure 8 A schematic diagram of a wire barrel of an embodiment of a waterproof wiring device for an electrical system according to the present invention;

[0026] Figure 9 A cross-sectional view of a wire barrel of an embodiment of a waterproof wiring device for an electrical system according to the present invention;

[0027] Figure 10 This is a cross-sectional view of an embodiment of a waterproof wiring device for an electrical system of the present invention after installation of cables and connectors.

[0028] In the figure: 100, cable; 110, copper wire; 120, insulation; 200, connection box; 210, installation box; 220, installation cylinder; 230, bolt; 300, terminal; 310, insulation shell; 320, crimping group; 321, gasket; 322, crimping piece; 323, connecting guide piece; 324, pressure rod; 400, wire drum; 410, limit block; 420, connection cylinder; 421, cylinder body; 422, middle expansion strip; 423, blade head; 500, connector; 510, locking cylinder; 520, pressing cylinder; 521, pressing piece; 530, clamping cylinder. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] An embodiment of a waterproof wiring device for an electrical system of the present invention is as follows Figures 1 to 10shown.

[0031] A waterproof wiring device for an electrical system, used to connect two cables 100, comprises a connection box 200, a terminal block 300, and two wire barrels 400. The terminal block 300 and the two wire barrels 400 are installed within the connection box 200. The two wire barrels 400 are located on either side of the terminal block 300 in a first direction, which is the axis of the cable 100. The cable 100 comprises two copper conductors 110 and an insulation covering 120 covering the two copper conductors 110. The two copper conductors 110 are arranged side by side in a second direction, which is perpendicular to the first direction. The cable 100 and the wire drum 400 are arranged in a one-to-one correspondence. The cable 100 can be extended into the wire drum 400 corresponding to it along the first direction and inserted into the terminal 300. When the cable 100 is extended into the wire drum 400, the wire drum 400 can be respectively covered on the outer surface of the two copper wires 110 and abut against the inner surface of the insulation skin 120, and the outer surface of the insulation skin 120 can abut against the inner surface of the connection box 200.

[0032] This embodiment utilizes a connection box 200, a terminal block 300, and two wire barrels 400. During installation, using one cable 100 as an example, the insulation 120 at one end of the cable 100 is stripped, exposing the two copper conductors 110 within the cable 100. The cable 100 is then held and inserted into the corresponding wire barrel 400. After passing through the barrel 400, the two copper conductors 110 are inserted into the terminal block 300. During this process, the wire barrel 400 extends into the insulation 120 of the cable 100 and wraps around the two copper conductors 110, assisting in separating the two copper conductors 110 and facilitating subsequent crimping of the copper conductors 110 with the terminal block 300. The wire barrel 400 also causes the insulation 120 on its outer side to expand toward the inner wall of the connection box 200, pressing the two together.

[0033] This embodiment utilizes an integrally formed connection box 200, which reduces the contact surface area on the connection box 200 and prevents water from entering through gaps in the connection box 200. The cable 100 utilizes an external plug-in design for easier operation. The wire barrel 400 not only guides the two copper conductors 110 but also tightens the gap between the insulation 120 and the connection box 200, enhancing waterproofing.

[0034] Specifically, the connection box 200 includes a mounting box 210 and two mounting barrels 220. The two mounting barrels 220 are fixedly mounted at both ends of the mounting box 210 in the first direction and are both connected to the mounting box 210. The mounting barrels 220 and the mounting box 210 are integrally formed. The terminal blocks 300 are mounted within the mounting box 210, and the wire reels 400 are mounted within the mounting barrels 220. The mounting box 210 is connected to the ground or other structure to be mounted via bolts 230.

[0035] Furthermore, a sealing strip is provided on the inner peripheral wall surface of the installation cylinder 220 .

[0036] The provision of the sealing strip can further improve the sealing between the insulating skin 120 and the mounting tube 220 , thereby further improving the waterproof effect.

[0037] In a further embodiment, the terminal block 300 includes an insulating housing 310 and two crimping assemblies 320, which are arranged side by side along the second direction within the insulating housing 310. The crimping assemblies 320 are used to connect any copper conductor 110 within one of the cables 100 to a copper conductor 110 within another cable 100 located on the same side as the copper conductor 110 in the second direction.

[0038] The crimping assembly 320 includes a gasket 321 and two crimping pieces 322. The gasket 321 is arranged along a first direction within the insulating housing 310. The crimping pieces 322 are elastic. The two crimping pieces 322 within the same crimping assembly 320 are arranged face to face in the first direction within the insulating housing 310 and connected by a connecting piece 323. The gasket 321 and the two crimping pieces 322 are arranged sequentially in a third direction, which is perpendicular to the first and second directions. In the initial state, the spacing between the gasket 321 and the crimping pieces 322 in the third direction is smaller than the diameter of the copper wire 110. This allows the crimping pieces 322 to crimp the copper wire 110 when the copper wire 110 extends into the crimping pieces 322 and gasket 321.

[0039] Specifically, one end of the crimping piece 322 is connected to the connecting piece 323, while the other end is suspended in the air for crimping the copper wire 110. The suspended portion of the crimping piece 322 is wavy. By making the portion of the crimping piece 322 that is crimped to the copper wire 110 wavy, the number of crimping points between the copper wire 110 and the crimping piece 322 is increased, thereby improving the conductive effect.

[0040] In a further embodiment, the wire spool 400 includes a stopper 410 and a connecting tube 420. The stopper 410 and the connecting tube 420 are arranged sequentially in a first direction and fixedly connected. The stopper 410 is located on the side of the connecting tube 420 that is closest to the insulating housing 310 in the first direction. The stopper 410 and the connecting tube 420 are integrally formed. The end surface of the insulating sheath 120 that is closest to the stopper 410 in the first direction can abut against the stopper 410.

[0041] The stop block 410 is provided with two through-holes extending in the first direction, and the two through-holes are arranged side by side in the second direction. The connecting tube 420 includes two cylindrical bodies 421, which are arranged face to face and fixedly connected in the second direction. The cylindrical bodies 421 are connected to the through-holes on the same side as the cylindrical bodies 421 in the second direction. A central expansion bar 422 is provided at the connection between the two cylindrical bodies 421. The central expansion bar 422 is arranged coaxially with the cable 100 and extends in the first direction away from the stop block 410. A blade-like cutting head 423 is provided on the end of the central expansion bar 422 away from the stop block 410 in the first direction.

[0042] Furthermore, the two cylinders 421 have the same structure, and an opening formed on an end surface of the cylinder 421 away from the limiting block 410 along the first direction is elliptical.

[0043] By setting the limit block 410 and the connecting cylinder 420, when wiring, the copper wire 110 enters from the elliptical opening on the cylinder 421 and passes through the through hole on the same side as the cylinder 421 in the second direction. Then the middle expansion bar 422 will gradually be inserted between the two copper wires 110, and the cylinder 421 will be inserted between the insulation 120 and the copper wire 110. As the cable 100 moves, the cylinder 421 will also gradually separate the copper wire 110 and the insulation 120 along the peripheral wall of the copper wire 110. Separated and located between the copper wire 110 and the insulation 120, when the end face of the insulation 120 abuts against the end face of the limit block 410, the cable 100 no longer moves. At this time, the copper wire 110 is crimped by the crimping piece 322 corresponding to it, and the copper wires 110 of the two cables 100 in the same crimping group 320 are conductive, and the part of the insulation 120 opened by the cylinder 421 is further pressed against the inner surface of the installation cylinder 220, thereby improving the sealing between the insulation 120 and the installation cylinder 220.

[0044] Alternatively, further, the wire spool 400 can slide in the first direction within the mounting barrel 220. The crimping assembly 320 also includes two compression rods 324, both arranged in the first direction and capable of sliding in the first direction within the insulating housing 310. The compression rods 324 are arranged in a one-to-one correspondence with the compression plates 322. The ends of the two compression rods 324 that are closer to each other in the first direction can respectively abut against their corresponding compression plates 322. The ends of the two compression rods 324 that are farther away from each other in the first direction both extend out of the insulating housing 310 and abut against their adjacent limit blocks 410.

[0045] When the copper wire 110 enters from the elliptical opening on the barrel 421, passes through the through hole on the same side as the barrel 421 in the second direction, and finally enters between the crimping piece 322 and the gasket 321, the entire wire barrel 400 will also be moved by the resistance of the cable 100. The movement of the wire barrel 400 will push the pressure rod 324 to move, causing the pressure rod 324 to apply force to the crimping piece 322, thereby increasing the force of the crimping piece 322 on the copper wire 110 and improving the tightness of the crimping.

[0046] In a further embodiment, a waterproof wiring device for an electrical system further includes two connectors 500, each corresponding to one of the two cables 100. The connectors 500 include a locking cylinder 510, a pressing cylinder 520, and a clamping cylinder 530. The locking cylinder 510, pressing cylinder 520, and clamping cylinder 530 are sequentially arranged in a first direction and are each sleeved onto the cable 100. The locking cylinder 510 is located on the side of the pressing cylinder 520 that is closest to the wire drum 400 in the first direction. The locking cylinder 510 is threadedly engaged with the mounting cylinder 220. One end of the pressing cylinder 520 in the first direction is rotatably engaged with the locking cylinder 510, allowing the locking cylinder 510 to rotate relative to the pressing cylinder 520 and move synchronously with the pressing cylinder 520 in the first direction. A plurality of elastic pressing tabs 521 are fixedly mounted on the other end of the pressing cylinder 520 in the first direction. The pressing tabs 521 are evenly distributed around the circumference of the pressing cylinder 520 and are integrally formed with the pressing cylinder 520. The clamping cylinder 530 is threadably matched with the pressing cylinder 520 . When the clamping cylinder 530 is mounted on the pressing cylinder 520 , the plurality of pressing pieces 521 can clamp the cable 100 and enable the cable 100 to move along with the pressing cylinder 520 .

[0047] Specifically, an annular groove is provided in the circumferential direction of the pressing cylinder 520, and an annular protrusion is provided on the inner circumferential wall surface of the locking cylinder 510. The annular protrusion rotates with the annular 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.

[0048] The clamping cylinder 530 includes a threaded section and a clamping section, which are arranged in sequence in the first direction and fixedly connected. The threaded section is threadedly matched with the pressing cylinder 520, and the clamping section can be crimped with the pressing piece 521. The inner diameter of the clamping section is smaller than the outer diameter of the multiple pressing pieces 521 after being sleeved on the cable 100. Therefore, when the clamping cylinder 530 and the pressing cylinder 520 are installed, the clamping section will tighten the multiple pressing pieces 521, clamp the cable 100, and enable the cable 100 to move with the pressing cylinder 520.

[0049] This embodiment provides a connector 500. When in use, the locking cylinder 510 and the pressing cylinder 520 are first put on the cable 100. Then, the cable 100 is moved by hand, and the copper wire 110 on the cable 100 is aligned with the elliptical opening on the cylinder body 421. When the cable 100 moves to the point where the thread inside the locking cylinder 510 is about to engage with the thread outside the installation cylinder 220, the clamping cylinder 530 is installed on the pressing cylinder 520. Then, the locking cylinder 510 is rotated. The locking cylinder 510 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 limit block 410, the cable 100 stops moving, and the installation of the cable 100 is completed.

[0050] By threading the locking cylinder 510 and the installation cylinder 220, the installation cylinder 220 is protected, and the waterproof effect between the part of the insulating skin 120 opened by the cylinder body 421 and the inner surface of the installation cylinder 220 is further improved. On this basis, the clamping cylinder 530 and the pressing cylinder 520 are used to clamp the cable 100 so that the two move synchronously. When the cable 100 tends to fall out of the crimping piece 322, the locking cylinder 510, the pressing cylinder 520 and the clamping cylinder 530 will limit the movement of the cable 100 to prevent the cable 100 from loosening, thereby improving the connection strength between the cable 100 and the connection box 200.

[0051] In combination with the above embodiment, the specific working process is as follows:

[0052] During installation, using one of the cables 100 as an example, the insulation 120 at one end of the cable 100 is stripped off, exposing the two copper conductors 110 inside the cable 100. The locking cylinder 510 and the pressing cylinder 520 are then placed on the cable 100. The cable 100 is then moved by hand, and the copper conductors 110 on the cable 100 are aligned with the elliptical opening of the cylinder 421. The copper conductors 110 are then fed through the elliptical opening of the cylinder 421 and passed through the through-hole on the same side of the cylinder 421 in the second direction. Subsequently, the middle expansion bar 422 is gradually inserted between the two copper conductors 110, and the cylinder 421 is inserted between the insulation 120 and the copper conductors 110. As the cable 100 moves, the cylinder 421 gradually separates the copper conductors 110 from the insulation 120 along the circumferential wall of the copper conductors 110, and is positioned between the copper conductors 110 and the insulation 120.

[0053] When the thread inside the locking cylinder 510 is about to cooperate with the thread outside the installation cylinder 220, the clamping cylinder 530 is installed on the pressing cylinder 520, and then the locking cylinder 510 is rotated. The locking cylinder 510 drives the pressing cylinder 520 and the clamping cylinder 530 to move, and the movement of the clamping cylinder 530 will drive the cable 100 to move.

[0054] When the end face of the insulating skin 120 abuts against the end face of the limit 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 conductive, and the part of the insulating skin 120 stretched open by the cylinder 421 is further pressed against the inner surface of the installation cylinder 220, thereby improving the sealing between the insulating skin 120 and the installation cylinder 220.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A waterproof wiring device for an electrical system, used to connect two cables, characterized by: The cable comprises a connection box, a terminal block and two wire drums; the terminal block and the two wire drums are installed in the connection box, and the two wire drums are respectively located on both sides of the terminal block in a first direction, where the first direction is the axial direction of the cable; the cable comprises two copper wires and an insulating skin wrapped around the two copper wires, and the two copper wires are arranged side by side in a second direction, which is perpendicular to the first direction; the cable and the wire drum are arranged in a one-to-one correspondence, and the cable can be extended into the wire drum corresponding to it along the first direction and inserted into the terminal block, and when the cable is extended into the wire drum, the wire drum can be respectively covered on the outer surfaces of the two copper wires and abut against the inner surface of the insulating skin, and the outer surface of the insulating skin abuts against the inner surface of the connection box. The wire barrel includes a limit block and a connecting barrel, which are sequentially arranged and fixedly connected in the first direction, and the limit block is located on the side of the connecting barrel close to the terminal in the first direction; the end face of the insulating skin close to the limit block in the first direction can abut against the limit block; the limit block is provided with two through holes extending along the first direction, 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 bodies are connected to the through holes on the same side in the second direction; a middle expansion strip is provided at the connection between the two barrel bodies, the middle expansion strip is coaxially arranged with the cable, and the middle expansion strip extends along the first direction to the side away from the limit block; The connection box includes an installation box and two installation tubes. The two installation tubes are fixedly installed at both ends of the installation box in the first direction and are both connected to the installation box. The installation tubes and the installation box are an integrally formed structure; the wiring terminal is installed in the installation box, and the wire drum is installed in the installation tube.

2. The waterproof wiring device for an electrical system according to claim 1, characterized in that: The terminal includes an insulating shell and two crimping groups, which are arranged side by side along the second direction in the insulating shell; the crimping group includes a gasket and two crimping pieces, the gasket is arranged along the first direction in the insulating shell, the crimping pieces are elastic, and the two crimping pieces in the same crimping group are arranged face to face in the first direction in the insulating shell and are connected by a connecting guide piece; the gasket and the two crimping pieces are arranged side by side in a 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 piece in the third direction is less than the diameter of the copper wire.

3. The waterproof wiring device for an electrical system according to claim 2, characterized in that: The wire drum can slide along the first direction in the connection box; the crimping group also includes two pressure rods, both of which are arranged along the first direction and can slide along the first direction in the insulating shell; the pressure rods and the crimping pieces are arranged in a one-to-one correspondence, and the ends of the two pressure rods that are 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 that are away from each other in the first direction both extend out of the insulating shell and abut against their adjacent wire drums.

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 wire, and the suspended part of the crimping piece is wavy.

5. The waterproof wiring device for an electrical system according to claim 1, characterized in that: A blade-shaped cutting head is provided at one end of the middle expansion bar in the first direction away from the limiting block.

6. The waterproof wiring device for an electrical system according to claim 1, characterized in that: An opening formed on an end surface of the cylinder away from the limiting block along the first direction is elliptical.

7. The waterproof wiring device for an electrical system according to claim 1, characterized in that: It also includes two connecting parts, which are arranged in a one-to-one correspondence with the two cables; the connecting parts include 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 with the cable, the locking cylinder is located on the side of the pressing cylinder close to the wire cylinder in the first direction, and the locking cylinder is threadedly engaged with the connecting box; one end of the pressing cylinder in the first direction is rotatably engaged 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 sheets are provided at the other end of the pressing cylinder in the first direction, the pressing sheets are elastic, and the plurality of pressing sheets are evenly distributed in the circumferential direction of the pressing cylinder, the clamping cylinder is threadedly engaged with the pressing cylinder, and when the clamping cylinder is installed on the pressing cylinder, the plurality of pressing sheets can clamp the cable and enable the cable to move with the pressing cylinder.

8. The waterproof wiring device for an electrical system according to claim 1, characterized in that: A sealing strip is provided on the inner peripheral wall surface of the installation cylinder.

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