A double-layer anti-leakage multi-core wire connector

Abstract

The application discloses a double-layer anti-seepage multi-core wire connector and relates to the technical field of connectors. The connector terminal is divided into two layers of plug-in rows, each layer is provided with a wire insertion hole and an independent accommodating cavity, a drainage inclined surface at the bottom of the cavity is communicated with a middle drainage channel to realize automatic gravity drainage, a conical part at the bottom of the insertion hole guides accumulated water to gather at the outer ring and isolate the middle conductive elastic sheet, a limiting assembly with a spring and a hinged pressing block are arranged in the insertion hole, when the multi-core wire is plugged in, the fixing ring lugs extrude the limiting block to stretch the second spring, the movement ring is driven to move downward, the radial capillary tube is pushed to the bottom of the insertion hole to absorb accumulated water, and after the wire is pulled out, the springs are automatically reset; the double-layer cavities are independently wired, the elastic sheet wiring clamp realizes non-welding quick wiring, and the pressing block torsional spring blocks the plug-in gap. The double-layer anti-seepage multi-core wire connector is provided with a triple anti-moisture structure of conical anti-seepage, capillary water absorption and drainage channel drainage, solves the problems of water vapor seepage in a humid environment and accumulated water corrosion terminal short circuit, and is suitable for long-term butt joint of multi-core wire harness of outdoor equipment.

Description

Technical Field

[0001] This invention relates to the field of connector technology, specifically to a double-layer leak-proof multi-core wire connector. Background Technology

[0002] The double-layer multi-core wire connector features an independent upper and lower double-layer wiring cavity design, integrating multiple sets of flexible conductive terminals. It can simultaneously connect multiple cable cores, enabling centralized connection of multiple circuits. An internal insulating layer isolates the two layers of wiring, preventing cross-circuiting of cores. The outer shell is made of flame-retardant and weather-resistant plastic, suitable for wiring harnesses in industrial and new energy equipment. The terminals adopt a wire clamping structure, which can firmly fix the wires without welding. It has low contact resistance, is shock-resistant and durable. The overall design adopts a snap-fit ​​quick-connect structure, making it easy to install and remove. The double-layer layout effectively reduces installation space and is suitable for equipment with narrow wiring areas. Conventional models have weak sealing protection and are mostly used in dry indoor environments. It can meet the needs of rapid assembly of multi-line integration in instruments and electrical control cabinets.

[0003] In the prior art, such as the double-layer multi-core connector with application number 202322166244.4, the technical solution is as follows: It includes a housing with a bottom cover and a cover plate on one side; the housing has two sets of upper and lower wire inlets, each set having at least two wiring holes; a wire passes through the cover plate, one end of the wire passes through the wiring hole and has a guide strip for connecting to a copper busbar, the guide strip is secured to the bottom cover, and the end of the wire away from the guide strip has a terminal; a locking element is provided on the guide strip. This design only retains the wiring points on the outside, while the wires and terminals are directly led out internally, saving the manufacturing cost of the internal guide strip and the space required to reconnect the terminals to the guide strip, as well as saving installation steps and time; the connector has multiple wiring holes arranged in a double layer, allowing multiple power lines to be connected simultaneously, improving the connector's practicality.

[0004] However, existing connectors rely solely on simple splicing and bonding of the connection ends without a dedicated waterproof and seepage-proof sealing structure. Moisture can easily seep into the housing through the gaps in the connection. Since there are no drainage channels inside the cavity, the seeping water cannot be discharged in time and accumulates in the terminal contact area over a long period of time, which can easily cause oxidation, short circuits, and leakage faults. It is also difficult to keep the cavity dry in humid working environments, resulting in poor circuit conductivity stability and significantly shortening the lifespan of the connector. This makes it impossible to meet the requirements for long-term safe power supply in high-humidity scenarios such as outdoor and underground environments.

[0005] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0006] To address the aforementioned issues, an innovative design was developed based on the existing double-layer multi-core connector. Summary of the Invention

[0007] The purpose of this invention is to provide a double-layer leak-proof multi-core wire connector to solve the problems mentioned in the background art, such as easy leakage of water vapor during insertion and inconvenience in keeping it dry.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A double-layer leak-proof multi-core wire connector includes connector terminals and a multi-core wire body. Several connector terminals are provided, and each terminal is fixedly connected via a plug slot. A partition is fixedly installed on the outside of each connector terminal. The connector terminals include a first layer of plug-in rows and a second layer of plug-in rows, with the second layer of plug-in rows being higher than the first layer. A horizontal connecting slot is provided between the first and second layers of plug-in rows. Wire insertion holes and lever slots are provided above both the first and second layers of plug-in rows, and the multi-core wire body is inserted into the wire insertion hole. Furthermore, a toggle block is provided inside the toggle slot, a first receiving cavity is provided inside the first layer of plug bar, and a second receiving cavity is provided inside the second layer of plug bar. A drainage channel is connected between the first and second receiving cavities and extends through the bottom surface of the connector terminal. A tapered component is provided inside the bottom surface of the wire insertion hole, and a multi-core wire body insertion hole is provided through the tapered component. Several capillaries are radially distributed on the outer side of the multi-core wire body, and when the multi-core wire body is inserted into the wire insertion hole, the capillaries contact the bottom surface of the wire insertion hole to form a water absorption structure.

[0009] Preferably, the bottom of the wire socket and the paddle slot of the first layer of the plug bar is connected to the first receiving cavity space, and the first receiving cavity is provided with a spring clip and a spring clip.

[0010] Using the above technical solution, after the multi-core wire body is inserted into the wire socket, it can directly and elastically fit with the spring clip without additional welding, quickly achieving circuit conduction. The paddle block in the paddle slot can be pressed down to reinforce the clamping, improving the wiring firmness. Water vapor seeping into the socket can fall directly into the first receiving cavity and be discharged through the drainage channel by the bottom drainage slope, avoiding long-term immersion of the conductive spring clip by water accumulation and slowing down metal oxidation and corrosion.

[0011] Preferably, the bottom of the wire socket and the lever slot of the second layer of the plug bar is connected to the space of the second receiving cavity, and the second receiving cavity is provided with a spring clip and a spring clip.

[0012] Using the above technical solution, the upper and lower plug-in strips are independently equipped with wiring clamping components, the circuits do not interfere with each other, different voltage lines can be laid separately to prevent short circuits, the double-layer cavity has its own water collection space, water vapor seeping into the upper layer will not drip onto the lower layer terminals, the spring clips clamp the wire core in both directions, with a large contact area and low contact resistance, and are not easy to loosen under vibration. The double-layer independent water collection structure shares the water pressure, and water accumulation in one cavity will not affect the operation of the circuit in the other layer, which greatly improves the waterproof fault tolerance of the connector.

[0013] Preferably, the bottoms of the first and second accommodating cavities are provided with opposing drainage slopes, and the water vapor inside the first and second accommodating cavities is concentrated and converged into the drainage channel through the drainage slopes.

[0014] Using the above technical solution, there are no dead corners for water accumulation on the sloping surface, and no local water accumulation will soak the conductive springs. This will prevent terminals from getting damp and oxidizing, and prevent leakage and short circuits. Moisture in the upper and lower cavities is discharged outward through a single drainage channel, simplifying the internal drainage pipe layout, reducing the need for openings that could damage the sealing structure, and allowing the inclined drainage structure to drain automatically by gravity, reducing the frequency of equipment maintenance and keeping the cavity dry in humid outdoor environments.

[0015] Preferably, a fixing ring is fixedly installed on the lower outer edge of the multi-core conductor body, and several small holes are radially distributed inside the fixing ring, and the capillaries are all slidably connected to the small holes of the fixing ring.

[0016] Using the above technical solution, the fixing ring limits the radial distribution position of the capillary tubes, ensuring that multiple capillary tubes uniformly surround the outer circumference of the wire to achieve lifting and lowering. After insertion, they fit the bottom surface of the wire socket in all directions to absorb water. The small hole constrains the capillary tubes to only lift and lower along the axial direction of the wire, preventing them from tilting or shifting and affecting water absorption contact. The fixing ring serves as the lower limiting reference, and during insertion, it first contacts the internal limiting structure of the socket, simultaneously driving the capillary tubes to move downwards, ensuring that each capillary tube can contact the water accumulation area, absorbing the water vapor accumulated at the bottom of the socket in all directions, and improving the overall water absorption and dehumidification efficiency.

[0017] Preferably, a movable ring is slidably connected to the outer edge of the multi-core conductor body near the middle, and capillary tubes are radially distributed and fixedly installed inside the movable ring, and a first spring is connected between the fixed ring and the movable ring.

[0018] Using the above technical solution, when the wire is inserted under pressure, the moving ring can slide downward relative to the fixed ring, causing the capillary to move down synchronously to fit the bottom surface of the wire insertion hole. After the wire is pulled out, the first spring rebounds, causing the capillary to reset, thus avoiding long-term pressure deformation and failure of the capillary.

[0019] Preferably, lugs are fixedly installed on both sides of the fixed ring, and the outer diameter of the lugs is larger than the outer diameter of the movable ring.

[0020] Using the above technical solution, during the insertion process, the lug acts as a force transmission component, making contact with the limiting component first, and synchronously transmitting the downward pressure force to the moving ring, forcibly driving the capillary tube downward. The large outer diameter lug passes through the pressure block relief groove, driving the lower limiting block to move downward.

[0021] Preferably, the inner wall of the wire socket is provided with grooves on both sides, and a limiting component is slidably connected inside the groove. The bottom of the limiting component is connected to a third spring, and the bottom of the third spring is fixedly connected to the bottom of the groove.

[0022] Using the above technical solution, the third spring pushes the limiting component upward. When no wire is inserted, the pressure block remains in a raised state. When the wire is inserted and the lug is pressed down, the third spring is compressed, and the limiting component sinks as a whole, providing space for the moving ring and capillary to move downward. The third spring reset structure automatically raises the limiting component after the wire is pulled out.

[0023] Preferably, the limiting component includes an upper limiting block and a lower limiting block, and a slot is provided between the upper limiting block and the lower limiting block, and a second spring is fixedly connected inside the slot.

[0024] Using the above technical solution, when the lug is pressed down, the lower limit block is squeezed first, and the second spring is stretched. The upper and lower blocks are stretched relative to each other to expand the vertical stroke, giving the moving ring and capillary sufficient space to move downward. When the moving ring is below the pressure block, the second spring contracts, and the pressure block drives the capillary to move downward to absorb water vapor.

[0025] Preferably, a pressure block is hinged to the outer side of the upper limit block, and a torsion spring is connected to the hinge rod of the pressure block. An avoidance groove is provided inside the pressure block to avoid the lug from descending. A guide slope is provided on the outer side of the pressure block to guide the lifting and lowering of the fixed ring and the moving ring.

[0026] Using the above technical solution, during insertion, the fixing ring smoothly presses down along the guide slope, the lug passes through the clearance groove and squeezes the lower limit block, and the torsion spring continuously presses the pressure block to provide downward pressure for the moving ring.

[0027] Compared with the prior art, the beneficial effects of the present invention are: this double-layer leak-proof multi-core wire connector, 1. Equipped with a double-layer cavity and a central drainage channel, the device automatically drains internal water by gravity, preventing short circuits caused by moisture in the terminals. The first and second layers of the connectors each have their own independent accommodating cavities. The bottom of each cavity is equipped with an inclined drainage slope, which collects all moisture and condensation that seeps into the sockets along the slope to the through-type drainage channel and is discharged outward by gravity. The upper and lower circuit cavities collect water separately, preventing water from overflowing into the conductive spring area of ​​the other layer. This double-layer isolation reduces the risk of short circuits. Traditional connectors lack drainage structures, and water accumulates and corrodes the springs over time. This solution eliminates water accumulation dead zones and provides continuous automatic drainage, eliminating the need for regular manual cleaning of the cavity. It keeps the terminals dry for a long time, significantly improving the operational stability of the connector in outdoor and underground high-humidity environments and extending its service life. 2. The socket has a built-in conical anti-seepage structure. Moisture gathers at the bottom along the conical surface, avoiding direct contact with conductive components. The bottom of the wire socket is an integral conical piece. The wire passes through the central hole of the cone, and the conical slope converges upwards. When external moisture and seepage flow down the inner wall of the socket, they will all converge at the bottom edge of the socket along the outer slope of the cone, and will not flow directly to the conductive area of ​​the spring clip in the middle. This achieves water and electricity separation. The conical structure raises the middle wiring position, and water only exists in the outer ring of the bottom of the socket. The conductive terminals are in a water-free area. With the bottom capillary water absorption structure, water on the conical surface can be removed in time. This double barrier prevents moisture from corroding the metal conductive components, reducing terminal oxidation and leakage faults from the source, and greatly improving the reliability of anti-seepage. 3. The plug-in linkage capillary water absorption mechanism, when the wire is pressed down, simultaneously drives the capillary to contact the accumulated water for rapid dehumidification. During the multi-core wire insertion process, the fixed ring lug squeezes the limiting component, causing the moving ring to move down, and simultaneously pushing the radially arranged capillary to the water accumulation area at the bottom of the insertion hole. The capillary uses capillary adsorption to continuously absorb the water vapor and water accumulated around the conical part. After the wire is pulled out, the first spring rebounds, and the capillary automatically resets. The entire water absorption structure starts and stops automatically with the insertion action, without manual operation. Multiple capillary rings surround the wire, making all-round contact with the accumulated water, and the water absorption speed is fast. Combined with the drainage channel at the bottom, it forms a dual moisture-proof system of water absorption and drainage, keeping the inside of the insertion hole dry at all times, perfectly solving the problem of water vapor retention in humid working conditions. 4. The bottom of the drainage channel features removable absorbent cotton for secondary water collection and leak prevention. Maintenance requires no disassembly of the entire machine. Modular removable absorbent cotton is added to the outlet at the bottom of the drainage channel as a secondary moisture-absorbing buffer structure. Water collected in the double-layer cavity is completely absorbed by the highly absorbent cotton after being discharged through the drainage channel, preventing water from dripping directly onto surrounding circuit boards and metal components, thus avoiding the risk of secondary water seepage and short circuits. The absorbent cotton uses a plug-in bayonet installation, eliminating the need to disassemble connector terminals or pull out wires during replacement. Single-person quick replacement is possible without interrupting circuit operations. In high-humidity underground and outdoor rain conditions, the absorbent cotton can temporarily buffer peak water accumulation, forming a triple water control system in conjunction with cavity drainage and capillary absorption. Once the cotton is saturated, simply replace it with a new part to restore its moisture-absorbing capacity, significantly reducing the frequency of machine disassembly and minimizing contact failures caused by repeated plugging and unplugging of circuits. Long-term moisture-proof reliability is significantly improved. 5. The four-slide groove annular limiting pressure block fully seals the gaps in the insertion hole, preventing moisture infiltration from all directions. Four sets of slide grooves are evenly arranged on the inner wall of the wire insertion hole, matched with an annular integral limiting component and four-segment hinged pressure block. Unlike the traditional double-sided semi-enclosed sealing structure, when no wire is inserted, the four-segment pressure block retracts inward under the action of torsion spring, and the annular closure completely seals the insertion hole entrance, with no air gaps. When the wire is inserted, the four sides are synchronously guided and pressed down, with uniform force and no one-sided jamming. The lug smoothly passes through the surrounding avoidance grooves. After insertion, the four-segment pressure block always fits the wire sheath in an annular shape, completely preventing water mist and condensation from flowing back into the cavity from the gaps in the wire's outer wall. Under high and low temperature and high humidity alternating environments, it can avoid water leakage due to one-sided seal failure. Combined with the internal conical anti-seepage, capillary water absorption, and drainage structure, it forms a complete moisture barrier from the outside to the inside, greatly reducing the probability of water entering the cavity and ensuring the sealing performance of the insertion. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of a partially disassembled structure of the present invention; Figure 3 This is a schematic diagram of the connector terminal structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the connector terminal of the present invention; Figure 5 This is a partial cross-sectional structural diagram of the connector terminal of the present invention; Figure 6 This is a schematic diagram of the wire socket structure of the present invention; Figure 7 This is a schematic diagram of the multi-core conductor body structure of the present invention; Figure 8 This is a schematic diagram of the limiting component structure of the present invention; Figure 9 This is a schematic diagram of the disassembled structure of the limiting component of the present invention; Figure 10This is a schematic diagram of the pressing block structure of the present invention.

[0029] In the diagram: 1. Connector terminal; 101. First layer plug bar; 102. Second layer plug bar; 2. Multi-core wire body; 3. Partition; 4. Horizontal connector slot; 5. Wire socket; 501. Slide groove; 502. Conical part; 6. Paddle slot; 7. First receiving cavity; 8. Second receiving cavity; 9. Drainage channel; 10. Spring clip; 11. Spring clip piece; 12. Paddle block; 13. Fixing ring; 1301. Lug; 1302. First spring; 14. Moving ring; 15. Capillary tube; 16. Limiting assembly; 1601. Upper limit block; 1602. Lower limit block; 17. Pressure block; 1701. Clearance groove; 1702. Guide slope; 1703. Torsion spring; 18. Second spring; 19. Third spring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0031] Please see Figure 1-10 The present invention provides a technical solution: A double-layer leak-proof multi-core wire connector includes connector terminals 1 and a multi-core wire body 2. Several connector terminals 1 are provided, and each connector terminal 1 is fixedly connected via a plug slot. A partition 3 is fixedly installed on the outside of each connector terminal 1. Each connector terminal 1 includes a first-layer plug bar 101 and a second-layer plug bar 102, with the second-layer plug bar 102 being higher than the first-layer plug bar 101. A horizontal connecting slot 4 is provided between the first-layer plug bar 101 and the second-layer plug bar 102. Wire insertion holes 5 and lever slots 6 are provided above both the first-layer plug bar 101 and the second-layer plug bar 102, and the multi-core wire body 2 is inserted into the wire insertion hole 5. The connector terminal 1 has a first receiving cavity 7 inside the first layer of the connector 101 and a second receiving cavity 8 inside the second layer of the connector 102. A drainage channel 9 is connected between the first receiving cavity 7 and the second receiving cavity 8 and passes through the bottom surface of the connector terminal 1. A tapered part 502 is provided on the bottom surface of the wire insertion hole 5 and a multi-core wire body 2 insertion hole is opened through the tapered part 502. Several capillaries 15 are radially distributed on the outer side of the multi-core wire body 2. When the multi-core wire body 2 is inserted into the wire insertion hole 5, the capillaries 15 contact the bottom surface of the wire insertion hole 5 to form a water absorption structure.

[0032] The bottom of the wire socket 5 and the lever slot 6 of the first-layer plug bar 101 is connected to the space of the first receiving cavity 7, and the first receiving cavity 7 is provided with a spring clip 10 and a spring clip 11. The bottom of the wire socket 5 and the lever slot 6 of the second-layer plug bar 102 is connected to the space of the second receiving cavity 8, and the second receiving cavity 8 is provided with a spring clip 10 and a spring clip 11. The bottoms of the first receiving cavity 7 and the second receiving cavity 8 are provided with drainage slopes facing each other, and the water vapor inside the first receiving cavity 7 and the second receiving cavity 8 is concentrated and converged into the drainage channel 9 through the drainage slopes. After the multi-core wire body 2 is inserted into the wire socket 5, it can directly and elastically fit with the spring clip 10 without additional soldering, and quickly achieve circuit conduction. The lever block 12 in the lever slot 6 can be pressed down to reinforce the clamping, improve the wiring firmness, and the water vapor seeping into the socket can fall directly into the first receiving cavity 7, and be gathered into the drainage channel 9 by the bottom drainage slope to be discharged, avoiding water accumulation. Long-term immersion of conductive spring contacts slows down metal oxidation and corrosion. The upper and lower plug-in strips have independent wiring clamping components, ensuring that the circuits do not interfere with each other and can be laid out separately for different voltage lines to prevent short circuits. Each of the two cavities has its own water collection space, so water vapor seeping into the upper layer will not drip onto the lower layer terminals. The spring clip 11 bidirectionally clamps the wire core, with a large contact area and low contact resistance, making it less prone to loosening under vibration. The dual-layer independent water collection structure distributes water pressure, and water accumulation in one cavity will not affect the operation of the circuit in the other layer, greatly improving the connector's waterproof and fault-tolerant capabilities. The sloping surface has no dead corners for water accumulation, preventing local water residue from soaking the conductive spring contacts and eliminating terminal oxidation, leakage, and short circuits. Water vapor from both the upper and lower cavities is uniformly discharged outward through a single drainage channel 9, simplifying the internal drainage pipe layout, reducing the need for openings that could damage the sealing structure, and the inclined drainage structure relies on gravity for automatic drainage, reducing the frequency of equipment maintenance and keeping the cavity dry in humid outdoor environments.

[0033] A fixing ring 13 is fixedly installed on the lower outer edge of the multi-core wire body 2, and several small holes are radially distributed inside the fixing ring 13. Capillary tubes 15 are slidably connected to the small holes of the fixing ring 13. A moving ring 14 is slidably connected to the middle outer edge of the multi-core wire body 2, and capillary tubes 15 are radially distributed and fixedly installed inside the moving ring 14. A first spring 1302 connects the fixing ring 13 and the moving ring 14. Lugs 1301 are fixedly installed on both sides of the fixing ring 13, and the outer diameter of the lugs 1301 is larger than the outer diameter of the moving ring 14. The fixing ring 13 limits the radial distribution position of the capillary tubes 15, ensuring that multiple capillary tubes 15 uniformly surround the outer circumference of the wire to achieve lifting and lowering. After insertion, they fit the bottom surface of the wire insertion hole 5 in all directions to absorb water. The small holes constrain the capillary tubes 15 to only lift and lower along the axial direction of the wire, preventing them from tilting or shifting and affecting water absorption. In the insertion process, the fixed ring 13, acting as the lower limiting reference, first contacts the internal limiting structure of the socket during insertion, simultaneously driving the capillary tube 15 downwards to ensure that each capillary tube 15 can contact the water accumulation area, absorbing the water vapor accumulated at the bottom of the socket from all directions, thus improving the overall water absorption and dehumidification efficiency. When the insertion is under pressure, the moving ring 14 can slide downwards relative to the fixed ring 13, driving the capillary tube 15 to move downwards synchronously to fit the bottom surface of the wire socket 5. After the wire is pulled out, the first spring 1302 rebounds, driving the capillary tube 15 to reset, preventing the capillary tube 15 from deforming and failing due to long-term pressure. During the insertion process, the lug 1301, as a force transmission component, first contacts the limiting component 16, synchronously transmitting the downward pressure force to the moving ring 14, forcibly driving the capillary tube 15 downwards. The large outer diameter lug 1301 passes through the relief groove 1701 of the pressure block 17, driving the lower limiting block 1602 downwards.

[0034] The inner wall of the wire socket 5 has grooves 501 on both sides, and a limit component 16 is slidably connected inside the groove 501. A third spring 19 is connected to the bottom of the limit component 16, and the bottom of the third spring 19 is fixedly connected to the bottom of the groove 501. The limit component 16 includes an upper limit block 1601 and a lower limit block 1602, and a slot is opened between the upper limit block 1601 and the lower limit block 1602. A second spring 18 is fixedly connected inside the slot. A pressure block 17 is hinged to the outside of the upper limit block 1601, and a torsion spring 1703 is connected to the hinge rod of the pressure block 17. A clearance groove 1701 is opened inside the pressure block 17, and the clearance groove 1701 is used to avoid the lug 1301 from descending. A guide slope 1702 is provided on the outer side of the pressure block 17, and the guide slope 1702 is used to guide the lifting and lowering of the fixed ring 13 and the moving ring 14. The third spring 19 moves upward. When the limiting component 16 is raised and the pressure block 17 remains raised when no wire is inserted, the third spring 19 is compressed when the wire is inserted and the lug 1301 is pressed down. The limiting component 16 sinks as a whole, providing space for the moving ring 14 and capillary tube 15 to move down. The reset structure of the third spring 19 automatically raises the limiting component 16 after the wire is pulled out. When the lug 1301 is pressed down, it first squeezes the lower limiting block 1602 and stretches the second spring 18. The upper and lower blocks stretch relative to each other to expand the vertical stroke, giving the moving ring 14 and capillary tube 15 sufficient space to move down. When the moving ring 14 is below the pressure block 17, the second spring 18 contracts, and the pressure block 17 drives the capillary tube 15 to move down to absorb moisture. When plugged in, the fixing ring 13 slides down smoothly along the guide slope 1702. The lug 1301 passes through the relief groove 1701 and squeezes the lower limiting block 1602. The torsion spring 1703 continues to press the pressure block 17 to provide downward pressure for the moving ring 14. Example

[0035] In this embodiment, a detachable absorbent cotton component is added to the bottom outlet of the original drainage channel 9. The absorbent cotton completely adheres to the inner wall of the outlet to collect the accumulated water and condensation discharged from the drainage channel 9. The absorbent cotton is made of highly absorbent fiber material, which can quickly absorb the liquid water flowing out of the channel, preventing the accumulated water from dripping directly and contaminating the surrounding electrical control components. The absorbent cotton has a modular structure, and a disassembly and assembly slot is opened at the bottom of the drainage channel 9, allowing it to be pulled out and replaced without disassembling the connector body. During normal operation, all the accumulated water flowing into the double-layer cavity along the drainage slope flows through the absorbent cotton, keeping the end of the channel dry. When the absorbent cotton is saturated, the operator can directly pull out the old cotton from the bottom slot and replace it with a new absorbent cotton to restore the moisture absorption capacity. The disassembly and assembly process does not disturb the core anti-seepage structure such as the internal connector terminal 1 and capillary tube 15. This structure further enhances the overall moisture resistance of the machine, making it particularly suitable for underground, high-humidity, and enclosed equipment compartments. It solves the potential for secondary leakage of diverted water, is easy to maintain, and does not require stopping the machine to disassemble the connectors, thus significantly extending the equipment's trouble-free operation cycle. Example

[0036] In this embodiment, the limiting component 16 is designed as a complete ring structure, surrounding the wire insertion hole 5. Four sets of symmetrical sliding grooves 501 are evenly distributed on the inner wall of the insertion hole. The four sets of limiting components 16 work synchronously with the ring hinged pressure block 17. When the multi-core wire body 2 is not inserted, the ring pressure block 17 retracts inward under the elastic force of each set of torsion springs 1703, completely sealing the gaps around the insertion hole and preventing external moisture and water mist from seeping into the cavity through the gaps in the wire. During the insertion of the multi-core wire body 2, the wire pushes open the four sections of pressure block 17 simultaneously along the surrounding guide slope 1702. The lugs 1301 evenly pass through each section of clearance groove 1701. The four sets of limiting components 16 simultaneously compress the third spring 19 downward, with the force being even and without deviation around the perimeter. After insertion, the four sections of pressure block 17 remain tightly attached to the outer sheath of the multi-core wire body 2, forming a ring enclosure without gaps, and always sealing the gaps in the insertion hole. Compared to the double-sided limiting structure, the four-slide groove 501 annular layout has stronger sealing performance, blocking water vapor intrusion from all directions, and greatly improving the seepage prevention effect in humid conditions. At the same time, the force is evenly distributed around the wire, preventing one side from scraping the inner wall of the wire socket 5 conical seepage prevention structure.

[0037] Working principle: In use, the connector terminal 1 separates the first layer of plug bar 101 and the second layer of plug bar 102. The two layers are spliced ​​and fixed by the horizontal connecting slot 4. The partition 3 realizes the insulation separation of the lines to avoid crosstalk between high and low voltage lines. Each plug bar has multiple sets of wire plug holes 5 and lever slots 6. The bottom of the wire plug hole 5 is integrally formed with a conical part 502. The multi-core wire body 2 passes through the conical hole of the conical part 502. When external water vapor flows down the inner wall of the wire plug hole 5, it will collect along the conical slope of the conical part 502 to the bottom outer ring of the wire plug hole 5, and will not directly contact the central spring clip 10, realizing water and electricity zoned anti-seepage. The wire plug hole 5 and lever slot 6 are connected to the first receiving cavity 7 and the second receiving cavity 8 below. The symmetrical drainage slope at the bottom of the cavity collects the accumulated water into the through drainage channel 9, and discharges the cavity uniformly by gravity, realizing automatic drainage.

[0038] The inner wall groove 501 of the wire socket 5 has a built-in limiting component 16, which consists of an upper limiting block 1601, a lower limiting block 1602, and a second spring 18 in the middle. The upper limiting block 1601 is hinged to a pressure block 17 with a torsion spring 1703. The pressure block 17 is provided with a guide slope 1702 and a relief groove 1701. When the multi-core wire body 2 is inserted, the multi-core wire body 2 is pressed down along the guide slope 1702. The lugs 1301 on both sides of the fixing ring 13 pass through the relief groove 1701 of the pressure block 17, and first contact the lower limiting block 1602 and press down. The second spring 18 is stretched, and the upper limiting block 1601 and the lower limiting block 1602 are pulled apart to form a downward stroke. During the continuous pressing process, the moving ring 14 moves along the guide slope 1702. Surface 1702 is located below pressure block 17. During the downward movement of limiting component 16, second spring 18 contracts, and pressure block 17 drives moving ring 14 downward relative to fixed ring 13. Capillary tube 15, which is radially fixed inside moving ring 14, is pushed to the water accumulation area around tapered part 502 at the bottom of wire insertion hole 5. Capillary tube 15 continuously absorbs accumulated water vapor by capillary adsorption and is located in the middle of capillary tube 15. The length of capillary tube 15 is set to maximize water vapor capacity adsorption height. Third spring 19 at the bottom of limiting component 16 provides upward support throughout the process, buffering the downward impact force and facilitating reset. After insertion, pressure block 17 rotates under the action of torsion spring 1703, providing reverse rotation avoidance for removing multi-core wire body 2. After wiring is completed, the wire core is elastically clamped and connected with spring clip 10 and spring clip 11 in the receiving cavity, and the paddle block 12 in the paddle slot 6 further reinforces the clamping. When the wire is pulled out, the third spring 19, the second spring 18, and the first spring 1302 rebound in sequence, and the limit component 16, the moving ring 14, and the capillary tube 15 are all reset, preventing external moisture from intruding again. The whole set of equipment integrates anti-seepage, water absorption, and automatic drainage. The entire process is linked without the need for additional consumables, and the cavity is kept dry to ensure the long-term safe conduction of the double-layer circuit.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-layer leak-proof multi-core wire connector, comprising connector terminals (1) and a multi-core wire body (2), wherein the connector terminals (1) are provided in a plurality of manner, and all connector terminals (1) are fixedly connected by plug-in slots, and a partition plate (3) is fixedly installed on the outside of the connector terminals (1), wherein the connector terminals (1) include a first layer plug-in row (101) and a second layer plug-in row (102), and the second layer plug-in row (102) is higher than the first layer plug-in row (101), and a horizontal connecting slot (4) is provided between the first layer plug-in row (101) and the second layer plug-in row (102), characterized in that: Both the first-layer plug bar (101) and the second-layer plug bar (102) are provided with wire sockets (5) and lever slots (6). The multi-core wire body (2) is inserted into the wire socket (5), and a lever block (12) is provided inside the lever slot (6). The first-layer plug bar (101) has a first receiving cavity (7), and the second-layer plug bar (102) has a second receiving cavity (8). The first receiving cavity (7) and the second receiving cavity (8) are connected in the middle. A drainage channel (9) is connected and the drainage channel (9) penetrates the bottom surface of the connector terminal (1). A tapered part (502) is provided on the bottom surface of the wire insertion hole (5). A multi-core wire body (2) insertion hole is opened through the tapered part (502). Several capillaries (15) are radially distributed on the outer side of the multi-core wire body (2). When the multi-core wire body (2) is inserted into the wire insertion hole (5), the capillaries (15) contact the bottom surface of the wire insertion hole (5) to form a water absorption structure.

2. The double-layer leak-proof multi-core wire connector according to claim 1, characterized in that: The bottom of the wire socket (5) and the paddle slot (6) of the first layer plug bar (101) are connected to the space of the first receiving cavity (7), and the first receiving cavity (7) is provided with a spring clip (10) and a spring clip (11).

3. A double-layer leak-proof multi-core wire connector according to claim 2, characterized in that: The bottom of the wire socket (5) and the paddle slot (6) of the second layer plug bar (102) are in spatial communication with the second receiving cavity (8), and the second receiving cavity (8) is provided with spring clip (10) and spring clip (11).

4. A double-layer leak-proof multi-core wire connector according to claim 3, characterized in that: The bottom of the first accommodating cavity (7) and the second accommodating cavity (8) are both provided with drainage slopes facing each other, and the water vapor inside the first accommodating cavity (7) and the second accommodating cavity (8) is concentrated and converged into the drainage channel (9) through the drainage slopes.

5. A double-layer leak-proof multi-core wire connector according to claim 1, characterized in that: A fixing ring (13) is fixedly installed on the lower outer edge of the multi-core conductor body (2), and several small holes are radially distributed inside the fixing ring (13), and the capillaries (15) are all slidably connected to the small holes of the fixing ring (13).

6. A double-layer leak-proof multi-core wire connector according to claim 5, characterized in that: The outer edge of the multi-core conductor body (2) is slidably connected to a movable ring (14) near the middle, and capillary tubes (15) are radially distributed and fixedly installed inside the movable ring (14), and a first spring (1302) is connected between the fixed ring (13) and the movable ring (14).

7. A double-layer leak-proof multi-core wire connector according to claim 6, characterized in that: Lugs (1301) are fixedly installed on both sides of the fixed ring (13), and the outer diameter of the lugs (1301) is larger than the outer diameter of the moving ring (14).

8. A double-layer leak-proof multi-core wire connector according to claim 1, characterized in that: The inner wall of the wire socket (5) is provided with a sliding groove (501) on both sides, and a limit component (16) is slidably connected inside the sliding groove (501). A third spring (19) is connected to the bottom of the limit component (16), and the bottom of the third spring (19) is fixedly connected to the bottom of the sliding groove (501).

9. A double-layer leak-proof multi-core wire connector according to claim 8, characterized in that: The limiting component (16) includes an upper limit block (1601) and a lower limit block (1602), and a slot is provided between the upper limit block (1601) and the lower limit block (1602), and a second spring (18) is fixedly connected inside the slot.

10. A double-layer leak-proof multi-core wire connector according to claim 9, characterized in that: The upper limit block (1601) is hinged to a pressure block (17) on the outside, and the hinge rod of the pressure block (17) is connected to a torsion spring (1703). The pressure block (17) has an avoidance groove (1701) inside, and the avoidance groove (1701) is used to avoid the lug (1301) from descending. The outer side of the pressure block (17) is provided with a guide slope (1702), and the guide slope (1702) is used to guide the lifting and lowering of the fixed ring (13) and the moving ring (14).

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