Plugboard type waterproof connector

Abstract

The utility model provides a plugboard type waterproof connector, which is characterized in that a main body is internally provided with a through groove and a fixed mounting plate, a pin penetrates through the mounting plate, and a part where the pin is connected with a PCB (printed circuit board) adopts a cylindrical step-shaped structure; an annular boss is integrally formed on the outer edge of the through groove, a polygonal limiting baffle is arranged at the end of the body, the position of the polygonal limiting baffle is aligned with the same side of double groove points on the surface, and a fool-proof positioning cylindrical strip is vertically arranged on the inner wall of the through groove. The welding area and the anti-deviation capability are increased through the step-shaped contact pin, the annular boss is matched with the sealing ring to form radial water resistance, the space constraint of the limiting baffle and the groove point ensures the consistency of the installation direction, and the cylindrical strip forcibly fool-proof alignment is achieved. According to the design, multi-layer sealing, structure positioning and installation fault tolerance functions are integrated, and the connection reliability and the waterproof performance are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric connector, concretely relates to a plug-in board type waterproof connector. BACKGROUND

[0002] The existing plug-in board type connector has the following defects in complex application scenarios: poor welding reliability: when the traditional straight pin type pin is welded with the PCB, the contact area is small, which is easy to cause the welding point to crack or be loose due to vibration, and there is no anti-deviation structure after the pin is inserted into the PCB hole, which causes the risk of short circuit. Single waterproof structure: only rely on the axial compression of the external sealing ring for waterproof, the sealing ring is easy to age and deform after long-term use, which causes water to enter the electrical connection area from the outside of the through slot, and reduces the protection level. SUMMARY

[0003] In view of the above situation, it is necessary to provide a plug-in board type waterproof connector to solve at least one of the above problems, comprising:

[0004] A main body (1) is provided with a through slot (11) inside, and a mounting plate (12) is fixedly installed in the through slot (11);

[0005] A pin (2) is fixedly provided in the mounting plate (12), and the part connected with the PCB of the pin (2) is a cylindrical stepped structure (21) including a first cylinder (211) with a larger diameter at the bottom and a second cylinder (212) with a smaller diameter at the top;

[0006] A ring-shaped boss (13) is integrally formed along the outer edge of the slot of the through slot (11);

[0007] A limiting baffle (14) is arranged at one end of the main body (1) close to the ring-shaped boss (13), and the limiting baffle (14) is a polygonal structure;

[0008] Two groove points (15) are symmetrically arranged on the surface of the main body (1), and the positions of the groove points (15) are on the same side as the position of the shortest side of the limiting baffle (14);

[0009] A cylindrical strip (16) is vertically arranged on the inner wall of the through slot (11) for foolproof positioning.

[0010] Preferably, the outer side of the main body (1) is provided with a thread (17).

[0011] Preferably, the mounting plate (12) is fixed in the through slot (11) by a hot pressing process.

[0012] Preferably, the diameter of the first cylinder (211) of the cylindrical stepped structure (21) is 2.5-3.5mm, and the diameter of the second cylinder (212) is 1.0-1.5mm.

[0013] Preferably, the limiting baffle (14) is a hexagonal structure, and the side length is equal to the interval of the slot points (15).

[0014] Preferably, the cross section of the cylindrical strip (16) is semicircular, and the height is 1 / 3-1 / 2 of the depth of the through slot (11).

[0015] Preferably, the width of the annular boss (13) is 1.0mm-2.0mm, and the height of the boss is 0.5mm-1.0mm.

[0016] Preferably, the slot point (15) is a circular groove, and the depth is 0.3mm-0.5mm.

[0017] Preferably, the main body (1) is integrally injection molded by using nylon 66 or PBT material. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is the structure schematic diagram of the first visual angle of the plug-in board type waterproof connector of the embodiment of the utility model.

[0019] Fig. 2 is the structure schematic diagram of the second visual angle of the plug-in board type waterproof connector of the embodiment of the utility model.

[0020] Fig. 3 is the structure schematic diagram of the third visual angle of the plug-in board type waterproof connector of the embodiment of the utility model. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will be further described in detail by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0022] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inner", "outer" is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for description purposes, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it is to be explained that, unless there is definite stipulation and limitation, the terms "mount", "connect", "connect" should be understood in broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be mechanical connection, also can be electrical connection, it can be direct connection, also can be indirectly connected through intermediate medium, it can be the communication inside two elements, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0024] Please see Figs. 1-3 The utility model discloses a plug -in board type waterproof connector, its characterized in that, including main part (1), the through slot (11) is arranged in the inside, the through slot (11) is fixed mounting plate (12) in, plug pin (2) is fixed in mounting plate (12), and the part of plug pin (2) and PCB board connection is cylindrical stepped structure (21), including the first cylinder (211) of bottom diameter larger and the second cylinder (212) of top diameter smaller, annular boss (13) is integrally formed along the slot mouth outside of through slot (11), limit baffle (14) is arranged in main part (1) one end close to annular boss (13), and limit baffle (14) is polygonal structure, two slot points (15) are symmetrically set up in the surface of main part (1), and the position of slot point (15) is on the same side with the position of the shortest side of limit baffle (14), cylindrical strip (16) is vertically set up in the inner wall of through slot (11) and is used for preventing stupid positioning.The main part (1) is integrally formed by injection molding, and the through slot (11) is rectangular channel, and the mounting plate (12) is embedded in the through slot (11) and is fixed by hot pressing, and the stepped structure design of plug pin (2) makes the first cylinder (211) contact PCB pad to increase the welding area, and the second cylinder (212) is inserted into PCB hole and prevents deviation, and annular boss (13) and external shell compression sealing ring form radial waterproof barrier, and the hexagonal structure of limit baffle (14) and the butt joint component snap, and limit rotation angle, and slot point (15) and the positioning pin of tool clamp cooperate, and ensure installation direction, and cylindrical strip (16) and the recess of the inner wall of butt joint socket match, and forcedly prevent stupid.

[0025] Please see Figs. 1-3 In another embodiment, the outer side of the main body (1) is provided with a thread (17). The thread (17) is distributed on the outer side of the end of the main body (1) and is matched with an external nut to be screwed tightly, so that the annular boss (13) compresses the sealing ring to realize double-layer waterproofing. The threaded structure can also be adapted to a standard interface support to increase the anti-shock performance.

[0026] Please see Figs. 1-3In another embodiment, the mounting plate (12) is fixed in the through slot (11) by a hot pressing process. The metal mounting plate (12) is pre-positioned in the through slot (11) mold, and the mold is heated to 200°C during injection molding, so that the nylon material locally melts and wraps the mounting plate (12), and after cooling, a gap-free fixation is formed to avoid displacement of the pin (2) due to vibration.

[0027] See Figs. 1-3 In another embodiment, the first cylinder (211) of the cylindrical stepped structure (21) has a diameter of 2.5-3.5 mm, and the second cylinder (212) has a diameter of 1.0-1.5 mm. Taking the diameter of the first cylinder (211) as an example, 3.0 mm covers 80% of the PCB pad area, and after soldering with tin paste, a stable conductive path is formed; the diameter of the second cylinder (212) is 1.2 mm, which is suitable for a standard 1.3 mm aperture PCB, and the gap after insertion is less than 0.1 mm, preventing false welding.

[0028] See Figs. 1-3 In another embodiment, the limiting baffle (14) is a hexagonal structure with a side length equal to the spacing of the slot points (15). The limiting baffle (14) has a side length of 3 mm, and the slot points (15) also have a spacing of 3 mm. During installation, the "shortest side" identified by the slot points (15) needs to be aligned with the tool fixture, and the hexagonal shape cooperates with the external tool bayonet to allow rotation only once every 60°, ensuring that the multi-pin connector is in the correct direction.

[0029] See Figs. 1-3 In another embodiment, the cross-section of the cylindrical bar (16) is semicircular, and the height is 1 / 3-1 / 2 of the depth of the through slot (11). The cylindrical bar (16) has a height of 2 mm (the depth of the through slot is 6 mm), and the semicircular cross-section reduces the friction during insertion and removal. During docking, the cylindrical bar (16) can only be inserted when it is aligned with the corresponding groove, and any misalignment of more than 1° will be blocked.

[0030] See Figs. 1-3 In another embodiment, the ring-shaped boss (13) has a width of 1.0-2.0 mm and a protrusion height of 0.5-1.0 mm. The boss width of 1.5 mm is suitable for an O-shaped sealing ring with a cross-section of 1.2 mm, and the protrusion height of 0.8 mm ensures that the sealing ring is compressed by 30%-40%, and still maintains IP67 level waterproof under 10kPa water pressure.

[0031] See Figs. 1-3 In another embodiment, the cross-section of the through slot (11) is rectangular, and the width is 1.2-1.5 times the diameter of the pin (2). When the diameter of the pin (2) is 1.0 mm, the through slot width is designed to be 1.3 mm, and the bilateral gap after accommodating the pin is 0.15 mm, which avoids pin deviation and allows thermal expansion deformation.

[0032] Referring to Figs. 1-3 In another embodiment, the groove point (15) is a circular groove with a depth of 0.3mm-0.5mm. The groove depth is 0.4mm, and the tapered positioning pin (diameter 0.38mm) of the matching tool clamp is inserted to cause slight elastic deformation, achieving loose-free positioning, and after disassembly, the groove has no residual stains.

[0033] Referring to Figs. 1-3 Figs. 1-3 In another embodiment, the main body (1) is integrally injection molded with nylon 66 or PBT material. When using nylon 66, the material melting point is 265℃, resistant to -40℃ to 120℃ working conditions, and the insulation resistance is >10^12Ω in a 85% humidity environment, avoiding the risk of electric leakage; PBT material is used for high rigidity demand scenarios, with a bending modulus of 2300MPa.

[0034] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belong to the scope of the present application.

Claims

1. A plug-in type waterproof connector, characterized in that, include: The main body (1) has a through groove (11) inside, and a mounting plate (12) is fixed inside the through groove (11); The pin (2) is inserted and fixed to the mounting plate (12). The part of the pin (2) connected to the PCB board is a cylindrical stepped structure (21), including a first cylinder (211) with a larger bottom diameter and a second cylinder (212) with a smaller top diameter. The annular boss (13) is integrally formed along the outer edge of the groove (11); A limiting baffle (14) is provided at one end of the main body (1) near the annular protrusion (13), and the limiting baffle (14) has a polygonal structure; Two grooves (15) are symmetrically arranged on the surface of the main body (1), and the position of the grooves (15) is on the same side as the shortest side of the limiting baffle (14); A columnar strip (16) is vertically set on the inner wall of the through groove (11) for foolproof positioning.

2. The connector according to claim 1, characterized in that, The outer surface of the main body (1) is provided with threads (17).

3. The connector according to claim 1, characterized in that, The mounting plate (12) is fixed in the through groove (11) by hot pressing.

4. The connector according to claim 1, characterized in that, The diameter of the first cylinder (211) of the cylindrical stepped structure (21) is 2.5mm-3.5mm, and the diameter of the second cylinder (212) is 1.0mm-1.5mm.

5. The connector according to claim 1, characterized in that, The limiting baffle (14) has a hexagonal structure, and its side length is equal to the distance between the grooves (15).

6. The connector according to claim 1, characterized in that, The cross-section of the columnar strip (16) is semi-circular, and its height is 1 / 3 to 1 / 2 of the depth of the through groove (11).

7. The connector according to claim 1, characterized in that, The width of the annular boss (13) is 1.0mm-2.0mm, and the height of the boss is 0.5mm-1.0mm.

8. The connector according to claim 1, characterized in that, The groove (15) is a circular groove with a depth of 0.3mm-0.5mm.

9. The connector according to claim 1, characterized in that, The main body (1) is integrally injection molded using nylon 66 or PBT material.

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