Waterproof sealed electric connector

Abstract

The invention relates to the field of electric connectors, in particular to a waterproof sealed electric connector which comprises a rectangular shell, and sealing assemblies are arranged at the two ends of the shell. The sealing assembly comprises first circular truncated cone bodies arranged at the two ends of the shell, the small end faces of the first circular truncated cone bodies face the interior of the shell, first sealing holes are formed in the two end faces of the first circular truncated cone bodies and are in a circular truncated cone shape, plugs matched with the first sealing holes in shape are arranged in the first sealing holes, and wire inserting holes are formed in the axis positions of the plugs. The wire is inserted into the wire insertion hole; compared with an existing glue-pouring sealing waterproof connector, in the aspect of maintenance cost, the waterproof sealing type electric connector in the embodiment is easy to disassemble, facilitates subsequent disassembly and is particularly suitable for the situation that frequent disassembly is needed, elements and structures in the shell cannot be damaged in the disassembly process, and the waterproof sealing type electric connector is convenient to use. And the maintenance difficulty and cost are reduced.

Description

Technical Field

[0001] The present invention relates to the field of electrical connectors, and specifically to a waterproof and sealed electrical connector. Background Art

[0002] Electrical connectors are indispensable components in electronic circuits, mainly used to achieve power, signal, or data transmission between electronic devices, circuit boards, or wires.

[0003] Electrical connectors have diverse structures. Among them, there is a rectangular connector, which is characterized by a rectangular or long strip shape and is applicable to various electrical systems, including devices such as anti-interference filters. During actual use, this rectangular connector not only needs to have strong anti-interference ability but also needs to have waterproof performance to be able to be used normally in complex environments.

[0004] When this rectangular connector makes a circuit connection and the wire penetrates into the interior of the rectangular connector, the connection position between the rectangular connector and the wire is prone to water ingress. Currently, for the waterproof measure at this position point, it is generally waterproofed and sealed by pouring glue. After the end of the wire is wired inside the rectangular connector, sealing glue is poured. The sealing glue fills the entire interior of the rectangular connector, sealing the end of the wire and also sealing the connection position between the rectangular connector and the wire. This kind of waterproof sealing is simple to operate and can quickly achieve the sealing operation. However, subsequent disassembly operations are relatively difficult and maintenance is difficult. After the glue injection and sealing, the colloid in the rectangular connector has a high hardness and is brittle. When disassembling, it is easy to damage the components and structures inside the rectangular connector, increasing the difficulty and cost of maintenance. Moreover, the maintenance cost is high. Due to the large difficulty of disassembly and repair, once the rectangular connector fails, it often needs to be replaced as a whole, resulting in a significant increase in the maintenance cost.

[0005] Therefore, a waterproof and sealed electrical connector is proposed for the above problems. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A waterproof and sealed electrical connector of the present invention includes a rectangular-shaped housing, and sealing components are provided at both ends of the housing;

[0008] The sealing component includes a first frustum provided at both ends of the housing. The smaller end face of the first frustum faces the interior of the housing. First sealing holes are opened on both end faces of the first frustum. The first sealing holes are frustum-shaped, and plugs adapted to their shapes are provided in the first sealing holes. Plug holes are opened at the axial positions of the plugs, and wires are inserted into the plug holes;

[0009] Both ends of the housing are also provided with L-shaped fixing plates. Through holes are opened in the vertical parts of the fixing plates, and the horizontal parts of the fixing plates are pressed against the sealing plates arranged at the upper ports of the housing.

[0010] Fixing ears are also arranged on both sides of the vertical parts of the fixing plates, and the fixing ears are used to fix the fixing plates at the end positions of the housing.

[0011] Preferably, both ends of the plug are uniformly in the shape of a frustum of a cone.

[0012] A second frustum of a cone is arranged inside the vertical part of the fixing plate. The larger end face of the second frustum of a cone faces the end of the housing, and a second sealing hole is opened in the end face of the second frustum of a cone. The second sealing hole is coaxially arranged with the through hole, and the second sealing hole is arranged in the shape of a frustum of a cone. One end of the plug is inserted into the first sealing hole, and the other end of the plug is inserted into the second sealing hole.

[0013] Preferably, the plug is cut in half parallel to its axis position, and sealing protrusions in the shape of waves are arranged on the cutting surface. The sealing protrusions on the two half plugs are meshed and sealed with each other.

[0014] Glue injection holes are opened on the surface of the plug, and the glue injection holes extend to the cutting surface.

[0015] Preferably, multiple circles of grooves are opened on the outer surface of the plug, and fastening rings are sleeved in each circle of grooves.

[0016] Preferably, a connecting component is arranged inside the housing. The connecting component is used to connect two wires together, and the connecting component includes a rectangular connecting body. Fixing holes are opened in the end face of the connecting body, and fastening bolts are arranged on the upper surface of the connecting body. The fastening bolts are threaded and penetrate into the fixing holes.

[0017] Preferably, a sliding rod is fixed at the middle position of the lower surface of the connecting body. A spring is sleeved on the outer circle of the sliding rod, and the sliding rod is slidably connected in a sliding hole opened at the bottom inside the housing.

[0018] Two push-pull rods are symmetrically and rotatably connected to the bottom edge of the end face of the connecting body. The ends of adjacent two push-pull rods are rotatably connected to a limiting ring. The bottom of the limiting ring is slidably connected to the inner bottom surface of the housing. Cross bars are symmetrically fixed to the end face of the limiting ring, and extrusion rings are fixed to the ends of the cross bars. The extrusion rings are used to extrude the outer circle of the end of the plug.

[0019] Preferably, extrusion strips are symmetrically arranged on both sides of the lower surface of the sealing plate.

[0020] A notch is opened at the top of the limiting ring. The sealing plate seals the upper port of the housing, and the extrusion strips are embedded in the notch.

[0021] Preferably, a cross-shaped card slot is opened at the end face of the fastening bolt; a card block is arranged on the lower surface of the sealing plate. The sealing plate seals the housing, and the card block is embedded in the card slot.

[0022] Preferably, a chute is provided on one side wall of the housing, and the chute runs through to the end of the housing; a slide bar adapted to the chute is provided on the other side wall of the housing.

[0023] Preferably, an adjusting bolt is provided on the upper surface of the sealing plate, the adjusting bolt is threadedly connected to the sealing plate, and a slotted opening is provided on the upper end surface of the adjusting bolt;

[0024] An anti - detachment strip adapted to the slotted opening is provided on the lower surface of the horizontal part of the fixing plate.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. In the present invention, compared with the existing potting - sealed waterproof connector, in terms of maintenance cost, the waterproof - sealed electrical connector in this embodiment is easy to disassemble, which is convenient for subsequent disassembly, especially suitable for situations that require frequent disassembly. Moreover, during disassembly, it will not cause damage to the components and structures inside the housing, reducing the difficulty and cost of maintenance.

[0027] 2. In the present invention, in terms of waterproof effect, the plug and the first sealing hole are designed with a matching shape. It can not only seal between the plug and the first sealing hole, but also squeeze - seal between the plug and the wire. Even if the wire swings, the insertion hole can still be sealed and squeezed together with the wire. With the extrusion of the fixing plate, the sealing performance between the plug and the first sealing hole, as well as the sealing performance between the plug and the wire, is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the first - perspective three - dimensional view of the waterproof - sealed electrical connector in the present invention;

[0029] Figure 2 is the second - perspective three - dimensional view of the waterproof - sealed electrical connector in the present invention;

[0030] Figure 3 is the cross - sectional view of the waterproof - sealed electrical connector in the present invention;

[0031] Figure 4 is the three - dimensional view of the housing in the present invention;

[0032] Figure 5 is the first - perspective three - dimensional view of the fixing plate in the present invention;

[0033] Figure 6 is the second - perspective three - dimensional view of the fixing plate in the present invention;

[0034] Figure 7 is the three - dimensional view of the sealing plate in the present invention;

[0035] Figure 8Isometric view of the plug in the present invention;

[0036] Figure 9 Schematic diagram of half of the structure of the plug in the present invention;

[0037] Figure 10 Isometric view of the cooperation between the connecting component and the wire in the present invention;

[0038] Figure 11 Isometric view of the connecting component in the present invention.

[0039] In the figure: 101, wire; 1, housing; 2, first frustum; 3, first sealing hole; 4, plug; 5, wire insertion hole; 6, through hole; 7, sealing plate; 8, fixing ear; 9, limiting groove; 10, second frustum; 11, second sealing hole; 12, sealing protrusion; 13, glue injection hole; 14, groove; 15, fastening ring; 16, connecting body; 17, fixing hole; 18, fastening bolt; 19, sliding rod; 20, spring; 21, sliding hole; 22, push-pull rod; 23, limiting ring; 24, cross bar; 25, extrusion ring; 26, extrusion strip; 27, notch; 28, card slot; 29, card block; 30, sliding groove; 31, sliding strip; 32, adjusting bolt; 33, slotted opening; 34, anti-detachment strip; 35, fixing plate; 36, plug pin; 37, insertion hole. Detailed implementation manners

[0040] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0041] Refer to Figure 1 - Figure 11 , a waterproof and sealed electrical connector, including a rectangular housing 1, and sealing components are provided at both ends of the housing 1; the sealing components include first frustums 2 provided at both ends of the housing 1, the smaller end faces of the first frustums 2 face the inside of the housing 1, first sealing holes 3 are opened on both end faces of the first frustums 2, the first sealing holes 3 are frustum-shaped, and plugs 4 adapted to their shapes are provided in the first sealing holes 3, wire insertion holes 5 are opened at the axial positions of the plugs 4, and wires 101 are inserted into the wire insertion holes 5; L-shaped fixing plates 35 are also provided at both ends of the housing 1, through holes 6 are opened in the vertical parts of the fixing plates 35, and the horizontal parts of the fixing plates 35 are pressed against the sealing plates 7 provided at the upper ports of the housing 1; fixing ears 8 are also provided on both sides of the vertical parts of the fixing plates 35, and the fixing ears 8 are used to fix the fixing plates 35 at the end positions of the housing 1;

[0042] In this embodiment, the designed waterproof and sealed electrical connector is a rectangular connector, and its shape is Figure 1 and Figure 2 the shapes shown in, and is used to seal the ends of two wires 101 inside the housing 1;

[0043] The specific operation is as follows. First, the ends of the two wires 101 are successively passed through the plug 4. The plug 4 is made of rubber material and is inserted through the wire insertion hole 5 on the larger end face of the plug 4. Then, the ends of the wires 101 are inserted into the housing 1 from the first sealing hole 3. At the same time, the smaller end face of the plug 4 is also inserted into the first sealing hole 3. Since the shapes of the plug 4 and the first sealing hole 3 are both frustum-shaped, the plug 4 can be hermetically attached inside the first sealing hole 3;

[0044] Then, the connection of the wires 101 is carried out. The ends of the two wires 101 are electrically connected together. Then, sealing is carried out. The sealing plate 7 is buckled inside the port of the housing 1. The sealing plate 7 is embedded in the housing 1. In order to improve the waterproof effect, a rubber gasket can be installed on the sealing plate 7 to improve the sealing between the sealing plate 7 and the housing 1;

[0045] Next, the fixing plate 35 is installed. In this embodiment, the fixing plate 35 has two functions. One is to tightly press the sealing plate 7 on the housing 1 to further improve the sealing between the sealing plate 7 and the housing 1. The other is to improve the sealing between the plug 4 and the first sealing hole 3. Specifically, the shape of the fixing plate 35 is as Figure 1 、 Figure 2 and Figure 3 shown. The horizontal part of the fixing plate 35 slopes downward. The wire 101 passes through the through hole 6. The fixing ear 8 is embedded in the limiting groove 9 opened at the end of the housing 1. Then, screws are used to tighten it, and the fixing ear 8 is squeezed and fixed in the limiting groove 9. At this time, the fixing plate 35 squeezes the plug 4 and squeezes the plug 4 towards the first sealing hole 3 to improve the sealing and waterproof effect between the plug 4 and the first sealing hole 3. The plug 4 also deforms, that is, the wire insertion hole 5 will further squeeze the outer surface of the wire 101 to improve the sealing between the plug 4 and the wire 101. In addition, the horizontal part of the fixing plate 35 generates a downward squeezing force on the sealing plate 7, squeezing the sealing plate 7 inside the port of the housing 1 to improve the sealing and waterproof effect between the sealing plate 7 and the housing 1;

[0046] Compared with the existing potting-sealed waterproof connector, in terms of maintenance cost, the waterproof-sealed electrical connector in this embodiment is easy to disassemble, which is convenient for subsequent disassembly, especially suitable for situations that require frequent disassembly. And when disassembling, it will not cause damage to the components and structures inside the housing 1, reducing the difficulty and cost of maintenance. Then, in terms of waterproof effect, the plug 4 and the first sealing hole 3 are designed with a matching shape, which can not only seal between the plug 4 and the first sealing hole 3, but also squeeze and seal between the plug 4 and the wire 101. Even if the wire 101 swings, the wire insertion hole 5 can still be hermetically squeezed together with the wire 101. Coupled with the squeezing of the fixing plate 35, the sealing between the plug 4 and the first sealing hole 3, as well as the sealing between the plug 4 and the wire 101, is further improved.

[0047] Refer to Figure 1 - Figure 9 Both ends of the plug 4 are uniformly frustum-shaped;

[0048] Inside the vertical part of the fixed plate 35, there is a second frustum 10. The larger end face of the second frustum 10 faces the end of the housing 1. A second sealing hole 11 is opened on the end face of the second frustum 10. The second sealing hole 11 is coaxially arranged with the through hole 6. The second sealing hole 11 is arranged in a frustum shape. One end of the plug 4 is inserted into the first sealing hole 3, and the other end of the plug 4 is inserted into the second sealing hole 11;

[0049] In this embodiment, the shape of the plug 4 is as shown in the figure. Both ends of the plug 4 are frustum-shaped. The wire 101 is inserted into the wire insertion hole 5 inside the plug 4. One end of the plug 4 is inserted into the first sealing hole 3. After installing the fixed plate 35, the other end of the plug 4 is inserted into the second sealing hole 11. At this time, the fixed plate 35 presses the plug 4, and the wire insertion hole 5 in the plug 4 will press the wire 101, enhancing the sealing performance between the outer surface of the wire 101 and the wire insertion hole 5. At the same time, it will also enhance the stability between the wire 101 and the plug 4. That is, by increasing the contact area between the plug 4 and the wire 101, the connection strength between the wire 101 and the plug 4 is enhanced, and the tensile strength between the wire 101 and the housing 1 is improved, so that the ends of the two wires 101 can be stably connected inside the housing 1.

[0050] Refer to Figure 1 - Figure 9 The plug 4 is cut in half parallel to its axis. On the cut surface, there are wavy sealing protrusions 12. The sealing protrusions 12 on the two half plugs 4 are engaged and sealed with each other;

[0051] A glue injection hole 13 is opened on the surface of the plug 4, and the glue injection hole 13 extends to the cut surface;

[0052] Considering that there are various diameters of the wire 101, the smaller diameter wire 101 can smoothly pass through to the wire insertion hole 5. However, for some larger diameter wires 101, it is difficult to pass through the wire insertion hole 5 during wire threading. Therefore, the plug 4 is set in half as shown in the figure. is half of the plug 4. The wire 101 is laid flat in the wire insertion hole 5, and then the other half of the plug 4 is buckled on. At this time, the two half plugs 4 can be assembled into a whole, and at the same time, the wire 101 is pressed in the wire insertion hole 5. In order to ensure the sealing performance between the plug 4 and the wire 101, sealing protrusions 12 are provided on the cut surface of the plug 4, as shown in the figure, in a wavy shape. The sealing protrusions 12 on the half plugs 4 are engaged and sealed with each other;

[0053] Each half plug 4 is provided with a glue injection hole 13. Before embedding the plug 4 into the first sealing hole 3, glue is injected into the glue injection hole 13. The glue fills the sealing between the wire 101 and the wiring hole 5, as well as the sealing between the sealing protrusions 12, further improving the sealing and waterproof performance between the plug 4 and the wire 101, and the connection strength between the plug 4 and the wire 101.

[0054] Refer to Figure 1 - Figure 9 A plurality of circles of grooves 14 are formed on the outer surface of the plug 4, and a fastening ring 15 is sleeved in each circle of grooves 14;

[0055] Glue is injected into the plug 4, and then the fastening rings 15 made of rubber are sleeved in each groove 14 one by one to bind the two half plugs 4 together, playing a role of temporary fixation to prevent the two half plugs 4 from being misaligned when installed into the first sealing hole 3. At the same time, the fastening rings 15 can also play a sealing role. The fastening rings 15 will be embedded and pressed in the first sealing hole 3 and the second sealing hole 11, improving the sealing and waterproof effect between the plug 4 and the first sealing hole 3 and the second sealing hole 11.

[0056] Refer to Figure 1 - Figure 11 A connecting component is arranged in the housing 1. The connecting component is used to connect two wires 101 together, and the connecting component includes a rectangular connecting body 16. A fixing hole 17 is formed on the end face of the connecting body 16, and a fastening bolt 18 is arranged on the upper surface of the connecting body 16. The fastening bolt 18 is threaded and penetrates into the fixing hole 17;

[0057] The arranged connecting component is used to electrically connect two wires 101 together. The conductive parts at the ends of the wires 101 are inserted into the fixing hole 17, and then the fastening bolt 18 is tightened. The fastening bolt 18 can fix the ends of the wires 101 together. And in this embodiment, the arranged connecting component is not limited to the connecting body 16 and the fastening bolt 18 designed in this embodiment. The connecting body 16 is arranged in half, and each half of the connecting body 16 is electrically connected to the wire 101. Some electronic components, such as current-limiting and voltage-limiting electronic components, etc., can be connected between the half connecting bodies 16.

[0058] Refer to Figure 1 - Figure 11 A sliding rod 19 is fixed at the middle position of the lower surface of the connecting body 16. A spring 20 is sleeved on the outer circle of the sliding rod 19, and the sliding rod 19 is slidably connected in a sliding hole 21 formed at the inner bottom of the housing 1;

[0059] At the bottom edge of the end face of the connecting body 16, two push-pull rods 22 are symmetrically and rotatably connected. The ends of two adjacent push-pull rods 22 are rotatably connected with a limiting ring 23. The bottom of the limiting ring 23 is slidably connected to the inner bottom surface of the housing 1. Symmetrically fixed to the end face of the limiting ring 23 are cross bars 24, and fixed to the ends of the cross bars 24 are extrusion rings 25, and the extrusion rings 25 are used to extrude the outer ring of the end of the plug 4;

[0060] Considering that the internal operating space of the rectangular connector is limited, when electrically connecting the wire 101 or welding electronic components, the operation is inconvenient. Therefore, a connecting body 16 that can move up and down is provided. The lower surface of the connecting body 16 is connected to the inner bottom of the housing 1 through a spring 20. When the sealing plate 7 is removed, the connecting body 16 loses the downward pressure of the sealing plate 7, and the connecting body 16 moves upward to the upper port position of the housing 1. At this time, the operating space is no longer limited, which is convenient for the operator to perform operations;

[0061] During the installation process of the sealing plate 7, the sealing plate 7 presses down the connecting body 16, and the connecting body 16 moves downward and pushes the push-pull rod 22. The push-pull rod 22 pushes the limiting ring 23 to move towards the first frustum 2. At the same time, the limiting ring 23 pushes the extrusion ring 25 to press against the plug 4 in the first sealing hole 3 through the cross bar 24. One end of the plug 4 is inserted into the first sealing hole 3 and protrudes from the inner hole end position of the first sealing hole 3. At this time, the extrusion ring 25 will be sleeved on one end of the plug 4 and squeeze the outer ring of one end of the plug 4. The plug 4 is squeezed and deformed, improving the squeezing force between the plug 4 and the wire 101, thereby further improving the connection strength between the plug 4 and the wire 101.

[0062] Refer to Figure 1 - Figure 11 On both sides of the lower surface of the sealing plate 7, extrusion strips 26 are symmetrically provided;

[0063] A notch 27 is opened at the top of the limiting ring 23. The sealing plate 7 is hermetically covered on the upper port of the housing 1, and the extrusion strip 26 is embedded in the notch 27;

[0064] The notch 27 is provided on the limiting ring 23 to facilitate the wire 101 to be placed inside the limiting ring 23. When the sealing plate 7 is installed on the housing 1, the extrusion strip 26 is embedded in the limiting ring 23 along the notch 27 and squeezes the wire 101 inside the limiting ring 23, squeezing and fixing the wire 101 inside the limiting ring 23. And the limiting ring 23 is connected to the connecting body 16 through the push-pull rod 22. At this time, the connection strength between the wire 101 and the connecting body 16 can be improved, thereby improving the connection strength between the wire 101 and the housing 1.

[0065] Refer to Figure 7 、 Figure 10 and Figure 11, a cross-shaped card slot 28 is provided on the end face of the fastening bolt 18; a clamping block 29 is provided on the lower surface of the sealing plate 7. The sealing plate 7 seals the housing 1, and the clamping block 29 is embedded in the card slot 28;

[0066] The rectangular connector is used in a complex environment and may be placed on some devices or apparatuses with high-frequency vibration. The high-frequency vibration will affect the fastening of the fastening bolt 18 to the wire 101. Therefore, a clamping block 29 that can restrict the loosening of the fastening bolt 18 is provided on the sealing plate 7. The cross-shaped card slot 28 on the fastening bolt 18 is adjusted to the angle shown in the figure in advance, that is, one of the slots of the cross-shaped card slot 28 is parallel to the strip-shaped clamping block 29. The sealing plate 7 is installed on the housing 1, and the clamping block 29 can be embedded in the card slot 28 to fix the self-rotation of the fastening bolt 18, thereby ensuring the electrical connection stability between the wire 101 and the connector 16;

[0067] As for the fixing ear 8 being fixed to the end of the housing 1 by screws, the screws will also become loose when subjected to high-frequency vibration. At this time, glue can be used for bonding. After all, the screws are placed outside the housing 1, and subsequent violent disassembly will not damage the electronic components and structures inside the housing 1.

[0068] Refer to Figure 1 - Figure 4 , a sliding groove 30 is provided on one side wall of the housing 1, and the sliding groove 30 penetrates to the end of the housing 1; a sliding strip 31 adapted to the sliding groove 30 is provided on the other side wall of the housing 1;

[0069] When multiple wires 101 are electrically connected to each other, multiple housings 1 can be spliced together. The sliding strip 31 on one housing 1 slides into the sliding groove 30 on the side wall of another housing 1, and the ends of adjacent two housings 1 are adjusted to be flush, and multiple housings 1 are fixed side by side, which is convenient for sorting the wires 101.

[0070] Refer to Figure 1 - Figure 7 , an adjusting bolt 32 is provided on the upper surface of the sealing plate 7. The adjusting bolt 32 is threadedly connected to the sealing plate 7, and a slotted opening 33 is provided on the upper end face of the adjusting bolt 32;

[0071] An anti-loosening strip 34 adapted to the slotted opening 33 is provided on the lower surface of the horizontal part of the fixing plate 35;

[0072] The lower surface of the sealing plate 7 is provided with a plug pin 36. The sealing plate 7 is installed inside the port of the housing 1, and the plug pin 36 is inserted into the jack inside the housing 1. The upper surface of the sealing plate 7 is threadedly connected with an adjusting bolt 32. The adjusting bolt 32 threadedly penetrates into the plug pin 36. By rotating the adjusting bolt 32, the height of its end can be adjusted. When the end of the adjusting bolt 32 is higher, the squeezing force of the horizontal part of the fixing plate 35 on the adjusting bolt 32 is greater, so that the squeezing force of the fixing plate 35 on the sealing plate 7 is greater, and then the sealing performance of the sealing plate 7 on the port of the housing 1 is improved. The slotted hole 33 provided on the upper end surface of the adjusting bolt 32 is adapted to the anti-loosening strip 34. The fixing plate 35 is pressed against the adjusting bolt 32, and the anti-loosening strip 34 is embedded in the slotted hole, which restricts the rotation of the adjusting bolt 32. The purpose is also to prevent the adjusting bolt 32 from rotating by itself due to high-frequency vibration.

[0073] Working principle: For the designed waterproof and sealed electrical connector, the specific operation is as follows. First, the ends of two wires 101 are sequentially penetrated through the plug 4. The plug 4 is made of rubber material and is inserted through the wire insertion hole 5 on the larger end surface of the plug 4. Then, the ends of the wires 101 are inserted into the housing 1 through the first sealing hole 3. At the same time, the smaller end surface of the plug 4 is also inserted into the first sealing hole 3. Since the shapes of both the plug 4 and the first sealing hole 3 are frustum-shaped, the plug 4 can be hermetically attached inside the first sealing hole 3.

[0074] Then, the wires 101 are connected. The ends of the two wires 101 are electrically connected together. Then, for sealing, the sealing plate 7 is buckled inside the port of the housing 1. The sealing plate 7 is embedded inside the housing 1. To improve the waterproof effect, a rubber gasket can be installed on the sealing plate 7 to enhance the seal between the sealing plate 7 and the housing 1.

[0075] Next, the fixing plate 35 is installed. In this embodiment, the fixing plate 35 has two functions. One is to tightly press the sealing plate 7 on the housing 1 to further improve the sealing performance between the sealing plate 7 and the housing 1. The other is to improve the sealing performance between the plug 4 and the first sealing hole 3. Specifically, the shape of the fixing plate 35 is as shown in Figure 1 、 Figure 2 and Figure 3 The horizontal part of the fixing plate 35 is inclined downward. The wire 101 penetrates through the through hole 6, and the fixing ear 8 is embedded in the limiting groove 9 opened at the end of the housing 1. Then, it is tightened with a screw to squeeze and fix the fixing ear 8 in the limiting groove 9. At this time, the fixing plate 35 squeezes the plug 4 and squeezes the plug 4 towards the first sealing hole 3, improving the sealing and waterproof effect between the plug 4 and the first sealing hole 3. The plug 4 also deforms, that is, the wire insertion hole 5 further squeezes the outer surface of the wire 101, improving the sealing performance between the plug 4 and the wire 101. In addition, the horizontal part of the fixing plate 35 generates a downward squeezing force on the sealing plate 7, squeezing the sealing plate 7 inside the port of the housing 1 and improving the sealing and waterproof effect between the sealing plate 7 and the housing 1.

[0076] Compared with the existing potting-sealed waterproof connectors, the waterproof and sealed electrical connector of the present embodiment is first in terms of maintenance cost. The waterproof and sealed electrical connector in this embodiment is easy to disassemble, which is convenient for subsequent disassembly, and is especially suitable for situations that require frequent disassembly. Moreover, during disassembly, it will not cause damage to the components and structures inside the housing 1, reducing the difficulty and cost of maintenance. Then, in terms of waterproof effect, the plug 4 and the first sealing hole 3 are designed with a matching shape. Not only can the space between the plug 4 and the first sealing hole 3 be sealed, but also the plug 4 and the wire 101 can be squeezed and sealed. Even if the wire 101 swings, the wiring hole 5 can still be sealed and squeezed together with the wire 101. With the extrusion of the fixing plate 35, the sealing performance between the plug 4 and the first sealing hole 3, as well as the sealing performance between the plug 4 and the wire 101, can be further improved.

[0077] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only used to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A waterproof sealed electrical connector, characterized in that: It comprises a rectangular shell (1), with sealing components provided at both ends of the shell (1); The sealing assembly comprises a first frustum body (2) arranged at both ends of the housing (1), the smaller end face of the first frustum body (2) faces the interior of the housing (1), a first sealing hole (3) is provided at both end faces of the first frustum body (2), the first sealing hole (3) is in the shape of a frustum, a plug (4) matching its shape is provided in the first sealing hole (3), a wire insertion hole (5) is provided at the axial position of the plug (4), and the wire (101) is inserted in the wire insertion hole (5); L-shaped fixing plates (35) are also provided at both ends of the housing (1); a through hole (6) is provided in the vertical portion of the fixing plate (35); and a sealing plate (7) is pressed against the upper end of the housing (1) by the horizontal portion of the fixing plate (35); Fixing ears (8) are also provided on both sides of the vertical portion of the fixing plate (35), and the fixing ears (8) are used to fix the fixing plate (35) at the end position of the housing (1).

2. A waterproof sealed electrical connector according to claim 1, characterized in that: Both ends of the plug (4) are evenly truncated cone-shaped; A second frustum body (10) is provided on the inner side of the vertical portion of the fixing plate (35), the larger end face of the second frustum body (10) faces the end of the shell (1), and a second sealing hole (11) is provided on the end face of the second frustum body (10), the second sealing hole (11) is coaxially arranged with the through hole (6), and the second sealing hole (11) is arranged in a frustum shape, one end of the plug (4) is inserted into the first sealing hole (3), and the other end of the plug (4) is inserted into the second sealing hole (11).

3. A waterproof sealed electrical connector according to claim 2, characterized in that: The plug (4) is cut in half parallel to its axis, and a wave-shaped sealing protrusion (12) is provided on the cut surface. The sealing protrusions (12) on the two halves of the plug (4) are meshed with each other and sealed. A glue injection hole (13) is provided on the surface of the plug (4), and the glue injection hole (13) extends to the cutting surface.

4. A waterproof sealed electrical connector according to claim 3, characterized in that: The outer surface of the plug (4) is provided with a plurality of grooves (14), and a fastening ring (15) is sleeved in each groove (14).

5. The waterproof sealed electrical connector according to claim 2, characterized in that: A connecting assembly is provided in the housing (1), and is used to connect two wires (101) together. The connecting assembly comprises a rectangular connecting body (16), a fixing hole (17) is provided on the end surface of the connecting body (16), and a fastening bolt (18) is provided on the upper surface of the connecting body (16). The fastening bolt (18) is threaded and penetrates into the fixing hole (17).

6. A waterproof sealed electrical connector according to claim 5, characterized in that: A slide bar (19) is fixed at the middle position of the lower surface of the connecting body (16), a spring (20) is sleeved on the outer ring of the slide bar (19), and the slide bar (19) is slidably connected in a slide hole (21) opened at the bottom of the housing (1); The bottom edge of the end face of the connecting body (16) is symmetrically connected to two push-pull rods (22) for rotation, the ends of the two adjacent push-pull rods (22) are rotatably connected to a limiting ring (23), the bottom of the limiting ring (23) is slidably connected to the inner bottom face of the shell (1), the end face of the limiting ring (23) is symmetrically fixed with a cross bar (24), the end of the cross bar (24) is fixed with an extrusion ring (25), and the extrusion ring (25) is used to extrude the end outer ring of the plug (4).

7. A waterproof sealed electrical connector according to claim 6, characterized in that: Extrusion strips (26) are symmetrically provided on both sides of the lower surface of the sealing plate (7); A notch (27) is provided on the top of the limiting ring (23), the sealing plate (7) is sealed on the upper end of the shell (1), and the extrusion strip (26) is embedded in the notch (27).

8. The waterproof sealed electrical connector according to claim 5, characterized in that: The end surface of the fastening bolt (18) is provided with a cross-shaped slot (28); the lower surface of the sealing plate (7) is provided with a block (29); the sealing plate (7) seals the housing (1), and the block (29) is embedded in the slot (28).

9. A waterproof sealed electrical connector according to claim 8, characterized in that: A slide groove (30) is provided on one side wall of the shell (1), and the slide groove (30) extends through the end of the shell (1); a slide bar (31) adapted to the slide groove (30) is provided on the other side wall of the shell (1).

10. The waterproof sealed electrical connector according to claim 8, characterized in that: The upper surface of the sealing plate (7) is provided with an adjusting bolt (32), the adjusting bolt (32) is threadedly connected to the sealing plate (7), and a slot (33) is provided on the upper end surface of the adjusting bolt (32); The lower surface of the horizontal portion of the fixing plate (35) is provided with an anti-slip strip (34) adapted to the slotted opening (33).

Images