Waterproof connector

Abstract

The invention relates to the technical field of connectors, and particularly discloses a waterproof connector which comprises a connector, a binding post and a wire fixing nut, the binding post is provided with a wiring port, the binding post is connected with a bolt corresponding to the wiring port, the bolt is rotatably connected with an insulating plate, and the insulating plate is fixedly connected with a conductive cutter; the conductive contact piece in the connector is electrically connected with the conductive cutter through a wire, and the wire is wrapped by an insulating layer. The insulating plate is sleeved with a mounting sleeve, the mounting sleeve is slidably sleeved with a plugging sleeve, the inner circumferential surface of the plugging sleeve is attached to the outer circumferential surface of the mounting sleeve, and the plugging sleeve is elastically connected with the mounting sleeve; and a thermal shrinkable sleeve is placed in the wiring port. According to the waterproof connector, after wiring is completed, no conductive part influencing cable electrical connection is exposed in the wiring port of the binding post, and the plugging sleeve seals a cutting-in port between the conductive cutter and the cable, so that the waterproof performance of the connector and the stability of electrical connection between the cable and the connector are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a waterproof connector. Background Art

[0002] A waterproof connector is a connector that can be used in a water environment and can ensure that the internal mechanical and electrical properties of the connector can be used normally under a certain water pressure. A Chinese patent with the authorization announcement number CN213184771U discloses a waterproof connector, which includes a first wire fixing nut, a second wire fixing nut, a waterproof sealing ring, a wire harness connector, a terminal post and a wire pressing structure. The wire pressing structure is arranged in the terminal post and is used to cooperate with the screw to compress the cable. In the above-mentioned waterproof connector, by connecting the cable to the terminal post and then installing the wire pressing structure, the wire pressing component of the wire pressing structure presses the cable, and the elastic component of the wire pressing structure cooperates with the screw to compress the cable.

[0003] However, when installing the cable into the terminal, the above patent requires the use of tools to peel off the outer insulation of the cable end before connection. Moreover, in order to facilitate the insertion of the stripped insulation part into the terminal to ensure that the internal copper wire can have good contact with the terminal, sometimes a conductive sleeve is put on the stripped insulation part before connection. Whether stripping the insulation or adding a conductive sleeve, the installation efficiency is low and the waterproof performance is poor.

[0004] The Chinese patent with the authorization announcement number CN210040576U discloses a piercing connector, including a base, a conductive sheet, a handle, a shell and an inner cover, wherein two wiring slots are arranged side by side on the top of the base; the conductive sheet is hinged to the base, and two conical metal conductive cutters are arranged in the middle of the conductive sheet corresponding to the two wiring slots; the handle is fixed to the top of the conductive sheet and can rotate with the conductive sheet; the shell is a hollow insulating shell with an opening at the top, and the inside of the shell is filled with vaseline. The above patent places the cables in the two wiring slots and presses down the handle so that the conductive cutter on the conductive sheet pierces the cable to achieve electrical connection between the two cables, and by buckling the shell with the base, the vaseline in the shell wraps the wiring to achieve a waterproof effect.

[0005] In actual use, the above patent reduces the number of operation steps by inserting the conductive cutter into the cable. However, due to the limited waterproof ability of vaseline, it cannot be used in water for a long time or deeply immersed. Therefore, the above patent cannot play a good waterproof role and is not suitable for electrical connections between cables that need to be used in water for a long time.

[0006] In addition, the waterproof effect of vaseline is mainly due to the characteristics of vaseline oily substances, which can form a lubricating film on the surface of objects, thereby playing a waterproof role. When the puncture connector in the above patent is used for a second time, the conductive cutter will inevitably come into contact with vaseline during the process of pulling out the conductive cutter. If the vaseline forms an oil film on the conductive cutter, it will affect the conductive performance of the conductive cutter, resulting in the puncture connector cannot be used for a second time, resulting in a waste of resources.

[0007] Therefore, there is a need in the art for a waterproof connector to solve the problem that the waterproof connector in the related art has a poor waterproof effect and cannot be used multiple times. Summary of the invention

[0008] The present invention provides a waterproof connector, aiming to solve the problem that the waterproof connector in the related art has poor waterproof effect and cannot be used multiple times.

[0009] A waterproof connector of the present invention comprises a connector, a terminal and a wire fixing nut connected in sequence, wherein the terminal is provided with a terminal port, a bolt corresponding to the terminal port is connected to the terminal, an end of the bolt facing the terminal port is connected with an insulating plate which is rotated around the central axis of the bolt, and an end of the insulating plate which is away from the bolt is fixedly connected with a conductive cutter; The conductive contact in the connector is electrically connected to the conductive cutter via a wire, the wire is wrapped with an insulating layer, the wire is passed through the insulating plate and is electrically connected to one end of the conductive cutter facing the insulating plate; The insulating plate outer shell is provided with a plugging assembly, which includes a mounting sleeve fixedly sleeved outside the insulating plate and a plugging sleeve slidably sleeved on the outer periphery of the mounting sleeve, the inner circumference of the plugging sleeve is in contact with the outer circumference of the mounting sleeve, and the plugging sleeve is elastically connected to the mounting sleeve along the axial direction of the bolt through a compression spring; A heat shrink sleeve for sealing and wrapping the cable end is provided in the wiring port. When the bolt drives the conductive cutter to cut into the cable, the sealing sleeve is tightly pressed against the cable to surround and seal the cutting port between the conductive cutter and the cable.

[0010] The present invention electrically connects the terminal post to the cable by cutting into the cable with a conductive cutter, thus saving the step of stripping the outer insulation of the cable and avoiding damage to the wires in the cable when stripping the insulation; by providing an insulating plate and a plugging sleeve, after the conductive cutter cuts into the cable, no conductive parts that affect the electrical connection of the cable are exposed in the terminal post's wiring port, and the plugging sleeve seals the incision between the conductive cutter and the cable, further improving the waterproof performance of the connector and the stability of the electrical connection between the cable and the connector. In addition, the waterproof connector of the present invention can smoothly disassemble the connected cable and reuse the cable after disassembly, reducing resource waste.

[0011] Preferably, a sealing portion that fits against the conductive cutter extends from one end of the sealing sleeve away from the bolt, and when the sealing portion abuts against the cable, the incision between the conductive cutter and the cable is covered.

[0012] By providing the sealing portion, the contact area between the sealing sleeve and the cable is enlarged, thereby forming a better sealing effect on the incision between the conductive cutter and the cable.

[0013] Preferably, a positioning structure for centering the cable is provided in the wiring port.

[0014] In order to ensure that the conductive cutter accurately cuts into the cable, the cable needs to be centered after the cable is inserted into the wiring port. By setting a positioning structure, the cable can be centered, ensuring that the conductive cutter is accurately inserted into the cable, thereby improving connection efficiency.

[0015] Preferably, the positioning structure includes two guide plates symmetrically arranged on both sides of the conductive cutter, and the sides of the two guide plates facing away from each other are elastically connected to the side walls of the terminal through a spring, and a guide surface is provided on the side of the guide plate facing the wiring port opening, and the guide surfaces on the two guide plates form a flaring structure on one side of the wiring port opening.

[0016] When the cable is inserted, the cable first contacts the guide surface on the guide plate, and squeezes the guide surface to drive the corresponding guide plate to move in the direction of compressing the spring 1, so that the cable can be inserted smoothly. After the cable is inserted into place, the two guide plates squeeze the cable, thereby realizing the centering and temporary fixation of the cable, which is conducive to the smooth cutting of the conductive cutter.

[0017] Preferably, a mounting groove is provided on the outer periphery of the terminal post, the guide plate is fixedly connected with a connecting post extending into the mounting groove, the outer periphery of the terminal post is threadedly connected with a wiring harness connector, and the wiring harness connector is provided with a pushing structure for pushing the connecting post to move closer to the wiring port.

[0018] By setting up a push structure, the two guide plates squeeze the cable toward the middle, so that the wires in the cable can fully contact with the conductive cutter, avoiding poor contact between the cable and the conductive cutter, and ensuring the electrical connection performance of the connector.

[0019] Preferably, the pushing structure includes a pushing block adapted to the mounting groove, the inner circumference of the wiring harness connector is rotatably connected to a mounting ring, the pushing block is fixedly connected to the mounting ring, and a pushing surface is provided on the side of the pushing block facing the connector, and when the wiring harness connector is installed on the terminal post, the pushing surface pushes the connecting post to move toward the direction close to the wiring port.

[0020] During the installation of the wire harness connector onto the terminal post, the push surface pushes the connecting post toward the wiring port, so that the two guide plates squeeze the cable toward the middle, so that the wires in the cable are fully in contact with the conductive cutter, avoiding poor contact between the cable and the conductive cutter, and ensuring the electrical connection performance of the connector. In addition, the cable clamp is set by two guide plates, which also improves the reliability of the connection between the cable and the terminal post. Moreover, the wire harness connector itself is also threadedly connected to the terminal post. By screwing the wire harness connector, the connection between the wire harness connector and the terminal post can be achieved, and the push block can push the connecting post, killing two birds with one stone.

[0021] Preferably, a telescopic rod is connected between the blocking portion and the mounting sleeve, the compression spring is sleeved on the outer periphery of the telescopic rod, and two ends of the compression spring are respectively against the mounting sleeve and the blocking portion.

[0022] By directly connecting the compression spring to the sealing part, the sealing part can be pressed more tightly onto the cable, thereby achieving a better sealing effect.

[0023] Preferably, the sealing sleeve and the sealing part are both made of flexible insulating materials.

[0024] The flexible insulating material has the ability to deform and can better adapt to the surface of the cable, thereby ensuring the sealing effect of the sealing sleeve and the sealing part.

[0025] Preferably, a sealing ring is provided on the inner periphery of the wire fixing nut.

[0026] The sealing ring can be in close contact with the outer circumference of the cable to be connected, preventing water from entering the connector from between the cable and the wire nut.

[0027] The beneficial effects of the present invention are: (1) The present invention electrically connects the terminal to the cable by cutting into the cable with a conductive cutter, thereby eliminating the step of stripping the outer insulation of the cable and avoiding accidental damage to the wire inside the cable when stripping the insulation; (2) By providing an insulating plate and a plugging sleeve, after the conductive cutter cuts into the cable, no conductive parts that affect the electrical connection of the cable are exposed in the wiring port of the terminal, and the plugging sleeve seals the cutting port between the conductive cutter and the cable, further improving the waterproof performance of the connector and the stability of the electrical connection between the cable and the connector; (3) The waterproof connector of the present invention can smoothly disassemble the connected cables and reuse the cables after disassembly, thus reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an embodiment of the waterproof connector provided by the present invention; Figure 2 for Figure 1 An exploded schematic diagram of the waterproof connector shown; Figure 3 for Figure 2 Schematic diagram of the structure of the middle terminal; Figure 4 for Figure 3 Schematic diagram of the assembly of the middle bolt and conductive cutter; Figure 5 for Figure 4 A cross-sectional view of the bolt and conductive cutter assembly structure shown; Figure 6 for Figure 3 a cross-sectional view of the terminal shown; Figure 7 for Figure 3 A schematic diagram of the structure of the middle guide plate and the connecting column; Figure 8 for Figure 2 Schematic diagram of the structure of the central harness connector; Fig. 9 for Figure 2 Schematic diagram of the structure when the heat shrink sleeve is installed in the cable.

[0029] Reference numerals: 1. Connector; 11. Conductive contact; 2. Terminal; 21. Wiring port; 22. Heat shrink sleeve; 23. Mounting slot; 3. Wire harness connector; 4. Wire nut; 5. Cable; 6. Bolt; 60. Connecting plate; 61. Insulating plate; 62. T-shaped connector; 63. Conductive cutter; 64. Rotating slot; 7. Mounting sleeve; 71. Sealing sleeve; 72. Sealing part; 73. Compression spring; 74. Telescopic rod; 8. Guide plate; 80. Connecting column; 81. Guide surface; 82. Spring 1; 9. Push block; 91. Mounting ring; 92. Push surface. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] like Figures 1 to 9As shown, the waterproof connector includes a connector 1, a terminal 2, a wire harness connector 3 and a wire fixing nut 4, wherein the terminal 2 is connected to the connector 1, the internal thread section of the wire harness connector 3 is threadedly connected to the outer periphery of the terminal 2, the internal thread of the wire fixing nut 4 is threadedly connected to the external thread section of the wire harness connector 3, and the inner periphery of the wire fixing nut 4 is provided with a sealing ring (not shown in the figure), which can be in close contact with the outer periphery of the cable 5 to be connected, preventing water from entering the connector from between the cable 5 and the wire fixing nut 4, and realizing waterproof sealing of the connector. The waterproof connector is used to connect two cables 5, one end of the cable 5 is connected to the waterproof connector, and the other end can be connected to the conductive part, so that the line conduction between the two conductive parts is realized through the waterproof connector.

[0032] Among them, the connector 1 can be a male plug or a female plug. In this embodiment, the connector 1 is described as a male plug. The end of the male plug away from its conductive contact 11 is fixedly connected with a terminal 2, and the cable 5 to be connected is electrically connected to the terminal 2. It can be understood that in other embodiments, the connector 1 can also be an integrated connector, that is, the connector does not need to cooperate with other connectors to achieve the connection of two cables 5. The two ends of the integrated connector are directly and respectively fixedly connected with the terminal 2, and a conductive structure for conducting the two terminals 2 is provided in the integrated connector, such as a wire, a conductive sheet, etc., and the cable 5 to be connected is connected to the terminals 2 at both ends of the integrated connector.

[0033] like Figures 3 to 5 As shown, the end of the terminal 2 away from the connector 1 is provided with three wiring ports 21 for inserting the cables 5, and three bolts 6 corresponding to the wiring ports 21 are threadedly connected to the terminal 2, and the bolts 6 extend along the radial direction of the terminal 2. Figure 5 As shown, an insulating plate 61 is provided at one end of the bolt 6 facing the wiring port 21, and a T-shaped connector 62 is bonded to the insulating plate 61. The bolt 6 includes a bolt body and a gland, and the gland is detachably connected to the bolt body by screws. A rotating groove 64 with a T-shaped axial cross-section is provided on the gland, and the rotating groove 64 is formed by connecting a cylindrical groove with a larger diameter and a cylindrical groove with a smaller diameter. The T-shaped connector 62 is rotatably connected to the rotating groove 64, and the structure of the T-shaped transverse part of the T-shaped connector 62 is fitted with the groove wall of the cylindrical groove with a larger diameter. Therefore, after the gland is installed on the bolt body, no axial relative movement can occur between the T-shaped connector 62 and the bolt 6. This axial direction refers to the axial direction of the bolt 6, so as to ensure that when the bolt 6 is screwed in or out, it can drive the insulating plate 61 to move synchronously along the axial direction of the bolt 6. The terminal 2 is provided with a receiving groove (not shown in the figure) adapted to the insulating plate 61. The insulating plate 61 can slide in the receiving groove along the axial direction of the bolt 6. When the bolt 6 is screwed, since the insulating plate 61 is located in the corresponding receiving groove, the groove wall of the receiving groove will restrict the insulating plate 61, preventing the insulating plate 61 from rotating synchronously with the bolt 6.

[0034] like Figure 4 and Figure 5 As shown, the end of the insulating plate 61 facing the center of the terminal 2 is bonded with a conductive cutter 63 by glue. The conductive contact 11 in the connector 1 is electrically connected to the conductive cutter 63 through a wire (not shown in the figure), and the wire is wrapped with an insulating layer to protect and waterproof the wire. An electrical connection contact is integrally injection molded in the insulating plate 61, and the wire is inserted into the insulating plate 61 and is conductively connected to the electrical connection contact, and the part of the wire inserted into the insulating plate 61 is tightly fitted with the insulating plate 61, and the end of the conductive cutter 63 facing the insulating plate 61 is pressed against the electrical connection contact for conductive connection, and the insulating plate 61 can be made of insulating plastic, so that the wire and the connection between the wire and the conductive cutter 63 are covered with insulating material to improve the waterproof performance.

[0035] Continue reading Figure 4 and Figure 5 , a plugging assembly is provided on the outer sleeve of the insulating plate 61, and the plugging assembly here specifically includes a mounting sleeve 7 and a plugging sleeve 71, the mounting sleeve 7 is fixedly sleeved outside the insulating plate 61, and the plugging sleeve 71 is slidably sleeved on the outer periphery of the mounting sleeve 7 along the axial direction of the bolt 6. A connecting plate 60 is provided between the insulating plate 61 and the T-shaped connector 62, and the connecting plate 60 and the insulating plate 61 are integrally injection-molded. The end of the mounting sleeve 7 facing the bolt 6 is bonded or integrally injection-molded to the connecting plate 60 on the insulating plate 61, and the gap between the mounting sleeve 7 and the insulating plate 61 is blocked by the connecting plate 60 near the end of the bolt 6. The plugging sleeve 71 slides with the mounting sleeve 7 along the axial direction of the bolt 6, and the inner circumference of the plugging sleeve 71 fits with the outer circumference of the mounting sleeve 7. The plugging sleeve 71 is elastically connected to the mounting sleeve 7 along the axial direction of the bolt 6 through a compression spring 73. The blocking sleeve 71 is slidably matched with the installation sleeve 7, so that after the blocking sleeve 71 contacts the cable 5, as the conductive cutter 63 goes deeper, the blocking sleeve 71 is reversely squeezed by the cable 5, and the blocking sleeve 71 can move toward the direction of the bolt 6 to compress the compression spring 73, so that under the reaction force of the compression spring 73, the blocking sleeve 71 is gradually and tightly squeezed onto the cable 5 by the compression spring 73, so that the blocking sleeve 71 is arranged around the incision between the conductive cutter 63 and the cable 5 and seals the incision.

[0036] like Figures 3 to 5 as well as Fig. 9As shown, a heat shrink sleeve 22 for wrapping the end of the cable 5 is placed in the wiring port 21. The heat shrink sleeve 22 can wrap the exposed end of the cable 5 to form a waterproof protection for the end of the cable 5. The direction in which the cable 5 is inserted into the wiring port 21 is defined as the front. When the cable 5 needs to be connected, the heat shrink sleeve 22 is first put on the front end of the cable 5, and then the heat shrink sleeve 22 is heated so that the heat shrink sleeve 22 covers the exposed conductive copper wire at the front end of the cable 5; then the cable 5 is inserted forward into the wiring port 21, the front end of the cable 5 is against the end face of the wiring port 21, and the bolt 6 is screwed into the wiring port 21. The bolt 6 drives the conductive cutter 63 to cut through the insulating skin of the cable 5 and insert into the cable 5, so as to electrically connect the conductive copper wire inside the cable 5 with the conductive contact 11 in the connector 1. When the conductive cutter 63 cuts into the cable 5, the blocking sleeve 71 contacts the cable 5, and as the conductive cutter 63 goes deeper, the blocking sleeve 71 is reversely squeezed by the cable 5, and the blocking sleeve 71 moves toward the bolt 6 to compress the compression spring 73. Under the reaction force of the compression spring 73, the blocking sleeve 71 is gradually and tightly squeezed onto the cable 5 by the compression spring 73, so that the blocking sleeve 71 surrounds the incision between the conductive cutter 63 and the cable 5 and seals the incision.

[0037] The present invention electrically connects the terminal 2 with the cable 5 by cutting the conductive cutter 63 into the cable 5, thus eliminating the step of stripping the outer insulation of the cable 5 and avoiding damage to the wires in the cable 5 when stripping the insulation. By providing the plugging sleeve 71, after the conductive cutter 63 cuts into the cable 5, no conductive parts that affect the electrical connection of the cable 5 are exposed in the wiring port 21 of the terminal 2, and the plugging sleeve 71 seals the cutting port between the conductive cutter 63 and the cable 5, further improving the waterproof performance of the connector and the stability of the electrical connection between the cable 5 and the connector. In addition, when the waterproof connector of the present invention is disassembled from the cable 5, the bolt 6 is screwed outward, and the bolt 6 drives the conductive cutter 63 to be pulled out from the cable 5, and then the cable 5 is pulled out from the wiring port 21, so that the cable 5 can be smoothly disassembled, and after the cable 5 is disassembled, the waterproof connector of the present invention can also be reused to connect a new cable 5, reducing resource waste.

[0038] Continue reading Figure 5, a plugging portion 72 is extended from one end of the plugging sleeve 71 away from the bolt 6, and is fitted to the surface of the conductive cutter 63. A telescopic rod 74 is arranged between the mounting sleeve 7 and the plugging portion 72. The two ends of the telescopic rod 74 are respectively connected to the mounting sleeve 7 and the plugging portion 72 by screws. A compression spring 73 is sleeved outside the telescopic rod 74, and the two ends of the compression spring 73 are respectively against the mounting sleeve 7 and the plugging portion 72. The plugging portion 72 surrounds the conductive cutter 63. When the plugging portion 72 is against the cable 5, the plugging portion 72 can cover the incision between the conductive cutter 63 and the cable 5. The plugging portion 72 here is an inverted edge provided at the corresponding end of the plugging sleeve 71. When the plugging portion 72 of the inverted edge structure is pressed against the cable 5, the contact area is larger. Moreover, by directly pressing the compression spring 73 against the plugging portion 72, the plugging portion 72 can be more tightly pressed against the cable 5, achieving a better sealing effect. The sealing sleeve 71 and the sealing portion 72 are both made of flexible insulating materials. As an example, the flexible insulating material may be rubber.

[0039] like Figure 3 , Figure 6 and Figure 7 As shown, in order to ensure that the conductive cutter 63 accurately cuts into the cable 5, it is necessary to center the cable 5 after the cable 5 is inserted into the wiring port 21. In this embodiment, a positioning structure for centering the cable 5 is provided in the wiring port 21, and the positioning structure includes two guide plates 8, which are symmetrically arranged on both sides of the conductive cutter 63, and springs 1 82 are respectively arranged on the opposite sides of the two guide plates 8, and the guide plates 8 are elastically connected to the side walls of the terminal 2 through the springs 1 82. Figure 3 In the embodiment, a guide surface 81 is provided at the rear side of the guide plate 8, and the guide surfaces 81 on the two guide plates 8 are inclined from the front to the back in a direction away from each other. The guide surfaces 81 of the two guide plates 8 are inclined so that one side of the opening of the wiring port 21 forms a flared structure. When the cable 5 is introduced into the wiring port 21, under the guidance of the guide surface 81, the cable 5 can easily slide to the middle of the wiring port 21, so that the cable 5 can be easily centered.

[0040] It is particularly important to note that when the cable 5 is inserted, the cable 5 first contacts the guide surface 81 on the guide plate 8, and squeezes the guide surface 81 to drive the corresponding guide plate 8 to move in the direction of the compression spring 1 82, so that the cable 5 can be smoothly inserted. After the cable 5 is inserted into place, under the action of the restoring elastic force of the spring 1 82, the two guide plates 8 squeeze the cable 5, thereby achieving centering and temporary fixation of the cable 5, which is conducive to the smooth cutting of the conductive cutter 63.

[0041] like Figure 2 , Figure 3 , Figure 6 and Figure 8As shown, in order to make the wires in the cable 5 fully contact with the conductive cutter 63, in this embodiment, a mounting groove 23 is opened on the outer periphery of the terminal 2, and the guide plate 8 is fixedly connected with a connecting column 80 extending into the mounting groove 23. The wire harness connector 3 is provided with a pushing structure for pushing the connecting column 80 to move toward the wiring port 21, and the pushing structure here includes a pushing block 9 adapted to the mounting groove 23, and the inner peripheral surface of the wire harness connector 3 is rotatably connected with a mounting ring 91, and the pushing block 9 is fixedly connected to the mounting ring 91, and a pushing surface 92 is provided on the front side of the pushing block 9, and the pushing surface 92 is inclined from front to back toward the direction close to the terminal 2.

[0042] During the installation of the harness connector 3 to the terminal 2, the push surface 92 pushes the connecting post 80 toward the direction close to the wiring port 21, so that the two guide plates 8 squeeze the cable 5 toward the middle. After the cable 5 is squeezed, the conductive copper wire in the cable 5 will also approach the conductive cutter 63, so that the conductive copper wire in the cable 5 is fully in contact with the conductive cutter 63, avoiding the occurrence of poor contact between the cable 5 and the conductive cutter 63, and ensuring the electrical connection performance of the connector. In addition, the two guide plates 8 clamp the cable 5, which also improves the reliability of the connection between the cable 5 and the terminal 2.

[0043] The specific use process of a waterproof connector of the present invention is as follows: First, put the wire fixing nut 4, sealing ring and wire harness connector 3 onto the cable 5 in sequence, and then insert the connecting end of the cable 5 into the wiring port 21 of the corresponding terminal 2. The two guide plates 8 clamp the cable 5 to keep the cable 5 in the center position in the wiring port 21, and tighten the bolt 6 so that the bolt 6 drives the conductive cutter 63 and the sealing sleeve 71 to move towards the direction of the cable 5. As the bolt 6 is screwed in, the conductive cutter 63 is inserted into the cable 5, and the sealing part 72 on the sealing sleeve 71 is tightly against the cable 5, so as to seal the cutting port between the conductive cutter 63 and the cable 5.

[0044] After completing the electrical connection between the conductive cutter 63 and the cable 5, align the pushing block 9 on the wire harness connector 3 with the mounting groove 23 on the terminal post 2, and screw the wire harness connector 3 to make the wire harness connector 3 threadedly connected to the terminal post 2. During the screwing process of the wire harness connector 3, the pushing block 9 enters the corresponding mounting groove 23 and squeezes the connecting post 80 through the pushing surface 92, so that the connecting post 80 drives the guide plate 8 to move in the direction of squeezing the cable 5, thereby fixing the cable 5 and ensuring the stability of the electrical connection between the cable 5 and the conductive cutter 63.

[0045] After the installation of the cable connector 3 is completed, the wire fixing nut 4 is screwed onto the cable connector 3. When the wire fixing nut 4 is screwed, the sealing ring is located between the wire fixing nut 4 and the cable 5 to seal the gap between the wire fixing nut 4 and the cable 5.

[0046] In the above embodiment, the positioning structure includes two guide plates 8 symmetrically arranged on both sides of the conductive cutter 63, and a guide surface 81 is arranged on the guide plate 8. The guide surface 81 is squeezed by the cable 5 so that the cable 5 can be inserted smoothly. After the cable 5 is inserted into place, the two guide plates 8 squeeze the cable 5. It can be understood that the description of the positioning structure in the above embodiment is only one of the implementation methods. In other embodiments, those skilled in the art can also change the positioning structure according to actual conditions and needs. For example, in other embodiments, the positioning structure can be an arc-shaped positioning tube arranged in the wiring port 21, and the radial cross-section of the arc-shaped positioning tube is an arc structure, and the arc-shaped positioning tube is fixedly connected to the side of the wiring port 21 facing the conductive cutter 63, and is located in the center position. The opening of the arc-shaped positioning tube faces the conductive cutter 63. When inserting the cable 5, first insert the cable 5 into the wiring port 21 from the top of the arc-shaped positioning tube, and then press the cable 5 into the arc-shaped positioning tube, so that the cable 5 squeezes the opening of the arc-shaped positioning tube and enters the arc-shaped positioning tube. The arc-shaped positioning tube clamps the cable 5, thereby achieving the effect of centering the cable 5.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0052] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A waterproof connector, comprising a connector (1), a terminal (2) and a wire fixing nut (4) connected in sequence, wherein the terminal (2) is provided with a terminal opening (21), and the terminal (2) is connected with a bolt (6) corresponding to the terminal opening (21), characterized in that: One end of the bolt (6) facing the wiring port (21) is connected to an insulating plate (61) by rotation around the central axis of the bolt (6), and one end of the insulating plate (61) facing away from the bolt (6) is fixedly connected to a conductive cutter (63); The conductive contact piece (11) in the connector (1) is electrically connected to the conductive cutter (63) via a wire, the wire is coated with an insulating layer, the wire is passed through the insulating plate (61) and is electrically connected to an end of the conductive cutter (63) facing the insulating plate (61); The insulating plate (61) is provided with a plugging assembly on its outer sleeve, the plugging assembly comprising a mounting sleeve (7) fixedly mounted on the outside of the insulating plate (61) and a plugging sleeve (71) slidably mounted on the outer periphery of the mounting sleeve (7), the inner peripheral surface of the plugging sleeve (71) being in contact with the outer peripheral surface of the mounting sleeve (7), and the plugging sleeve (71) being elastically connected to the mounting sleeve (7) along the axial direction of the bolt (6) via a compression spring (73); A heat shrink sleeve (22) for sealing and wrapping the end of the cable (5) is provided in the wiring port (21); when the bolt (6) drives the conductive cutter (63) to cut into the cable (5), the sealing sleeve (71) is tightly pressed against the cable (5) to surround and seal the cutting port between the conductive cutter (63) and the cable (5).

2. The waterproof connector according to claim 1, characterized in that: A sealing portion (72) that is in contact with the conductive cutter (63) extends from one end of the sealing sleeve (71) away from the bolt (6); when the sealing portion (72) abuts against the cable (5), the cutting opening between the conductive cutter (63) and the cable (5) is covered.

3. The waterproof connector according to claim 2, characterized in that: A positioning structure for centering the cable (5) is provided in the wiring port (21).

4. The waterproof connector according to claim 3, characterized in that: The positioning structure comprises two guide plates (8) symmetrically arranged on both sides of the conductive cutter (63), the two guide plates (8) having sides facing away from each other elastically connected to the side walls of the terminal (2), the guide plates (8) having a guide surface (81) arranged on the side facing the opening of the terminal port (21), and the guide surfaces (81) on the two guide plates (8) forming a flared structure on the side of the opening of the terminal port (21).

5. The waterproof connector according to claim 4, characterized in that: The outer periphery of the terminal post (2) is provided with a mounting groove (23); the guide plate (8) is fixedly connected with a connecting post (80) extending into the mounting groove (23); the outer periphery of the terminal post (2) is threadedly connected with a wire harness connector (3); and the wire harness connector (3) is provided with a pushing structure for pushing the connecting post (80) toward the terminal port (21).

6. The waterproof connector according to claim 5, characterized in that: The pushing structure comprises a pushing block (9) adapted to the mounting groove (23); the inner circumferential surface of the wiring harness connector (3) is rotatably connected to a mounting ring (91); the pushing block (9) is fixedly connected to the mounting ring (91); a pushing surface (92) is provided on a side of the pushing block (9) facing the connector (1); when the wiring harness connector (3) is mounted on the terminal post (2), the pushing surface (92) pushes the connecting post (80) to move in a direction close to the terminal opening (21).

7. The waterproof connector according to claim 2, characterized in that: A telescopic rod (74) is connected between the blocking portion (72) and the mounting sleeve (7), the compression spring (73) is sleeved on the outer periphery of the telescopic rod (74), and two ends of the compression spring (73) respectively abut against the mounting sleeve (7) and the blocking portion (72).

8. The waterproof connector according to claim 2, characterized in that: The blocking sleeve (71) and the blocking portion (72) are both made of flexible insulating materials.

9. The waterproof connector according to claim 1, characterized in that: A sealing ring is provided on the inner periphery of the wire fixing nut (4).

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