Waterproof connector

Abstract

The waterproof connector comprises a plug and a socket, a jack is arranged at the left end of the socket, a plugging end is arranged at the right end of the plug, and the plugging end is matched with the jack in a plugging manner, and is characterized in that a first sealing ring is sleeved on the outer surface of the plugging end; the first sealing ring is used for sealing the joint of the inserting end and the inserting hole; a second elastic sealing ring is further arranged, the two ends of the second elastic sealing ring are arranged on the outer surface of the plug and the outer surface of the socket in a sleeving mode respectively, and the middle of the second elastic sealing ring is arranged on the outer surface between the right end face of the plug and the left end face of the socket in a sleeving mode. And the second elastic sealing ring seals the joint of the plug and the socket. According to the utility model, the waterproof performance is effectively improved.

Description

Technical Field

[0001] The utility model relates to a connector, in particular to a waterproof connector. Background Art

[0002] Inclinometers are used in geotechnical engineering to monitor the deep horizontal displacement of foundation pits in order to control the excavation rate of the foundation pit and decide whether to reinforce the slope of the foundation pit. Inclinometers are also commonly used to monitor the lateral displacement of soil in landslide areas and deep hole excavations, and to monitor the deformation of structures such as dams, or to detect ground settlement of large buildings with horizontal pre-buried inclinometer tubes.

[0003] There are many ways to measure inclinometer, which are generally divided into fixed inclinometer and mobile inclinometer. The most commonly used inclinometer is mobile inclinometer. The inclinometer is installed at the bottom of the measuring rope, and then a bracket is placed on the ground above the inclinometer tube. The measuring rope is reeled in with a reel. According to the point to be tested, it is paused at the corresponding position until the inclinometer is detached from the inclinometer tube.

[0004] In the fixed inclinometer method, multiple inclinometers are connected in series on the cable from bottom to top (the distance between adjacent inclinometers is the fixed-point inclinometer distance), and then the cable and the inclinometer are directly placed in the inclinometer tube, and the inclinometer tube is measured by multiple inclinometers at the same time. When the inclinometer measurement is completed, the inclinometer is removed from the inclinometer tube.

[0005] Whether it is fixed inclinometer or mobile inclinometer, the inclinometer is placed in the inclinometer tube for a short time. Especially in the fixed inclinometer method, adjacent inclinometers are connected by cables, and the cables and inclinometers are connected by connectors. However, due to the deep depth of the inclinometer tube, it often exceeds 30m, and some inclinometer tubes are even deeper than 50m. The inclinometer tube will be full of water due to ground seepage. If it is only a short-term inclinometer, conventional connectors will not leak. However, if the inclinometer is placed in the inclinometer tube 24 hours a day (this inclinometer method has good accuracy and can perform inclinometer work in real time), the small-sized connectors currently on the market cannot meet the requirements of high water pressure leakage, because at a depth of 20m to 50m or even 100m, the water pressure is particularly high, and the inclinometer tube is relatively small. There is currently no small-sized deep-water leak-proof connector on the market. The connector of the submarine optical cable is particularly large in size, and it is completely impossible to miniaturize it to achieve a waterproof effect. Therefore, how to solve the above technical problems is the direction that technical personnel in this field need to work hard on. Summary of the invention

[0006] The utility model aims to provide a waterproof connector, which can effectively improve the waterproof performance of the connector by using the structure.

[0007] To achieve the above object, the technical solution adopted by the utility model is: a waterproof connector, including a plug and a socket, the left end of the socket is provided with a plug hole, the right end of the plug is provided with a plug end, the plug end is plugged and matched with the plug hole, a first sealing ring is sleeved on the outer surface of the plug end, and the first sealing ring seals the connection between the plug end and the plug hole;

[0008] A second elastic sealing ring is also provided, the two ends of which are respectively sleeved on the outer surfaces of the plug and the socket, and the middle part of the second elastic sealing ring is sleeved on the outer surface between the right end surface of the plug and the left end surface of the socket, and the second elastic sealing ring seals the connection between the plug and the socket.

[0009] In the above technical solution, the first sealing ring is tightly matched with the outer surface of the plug end.

[0010] In the above technical solution, two ends of the first sealing ring respectively abut against the right end surface of the plug and the left end surface of the socket.

[0011] In the above technical solution, the first sealing ring is arranged inside the second elastic sealing ring, the middle inner surface of the second elastic sealing ring is tightly matched with the outer surface of the first sealing ring, and the two ends of the second elastic sealing ring are tightly matched with the outer surface of the plug and the outer surface of the socket respectively.

[0012] In the above technical solution, a left annular protrusion is provided on the outer surface of the plug, and a right annular protrusion is provided on the outer surface of the socket.

[0013] In the above technical solution, the second elastic sealing ring is arranged between the left annular protrusion and the right annular protrusion;

[0014] And / or, two ends of the second elastic sealing ring are respectively arranged close to the left annular protrusion and the right annular protrusion.

[0015] In the above technical solution, the external movable sleeve of the plug is provided with a left connecting piece, and the external movable sleeve of the socket is provided with a right connecting piece, the left connecting piece is threadedly connected to the right connecting piece, and the left annular protrusion limits the left connecting piece from moving to the right to disengage from the plug, and the right annular protrusion limits the right connecting piece from moving to the left to disengage from the socket.

[0016] In the above technical solution, the right end surface of the left connecting member abuts against the left side surface of the left annular protrusion, and an external thread is provided on the outer surface of the left connecting member;

[0017] A right through hole is provided inside the right connecting piece, and the outer diameter of the right through hole is greater than or equal to the outer diameter of the right annular protrusion;

[0018] A positioning ring is provided on the right inner surface of the right through hole, the inner diameter of the positioning ring is smaller than the outer diameter of the right annular protrusion, and the left side surface of the positioning ring abuts against the right side surface of the right annular protrusion;

[0019] An internal thread is arranged on the inner wall of the right through hole, and the right connecting piece is threadedly connected with the external thread of the left connecting piece via the internal thread.

[0020] In the above technical solution, at least one plug hole is provided on the right side surface of the plug end, and a plug terminal is provided in each of the plug holes;

[0021] At least one plug pin is arranged in the plug hole and is plugged and matched with the plug hole. Each of the plug pins is inserted in one of the plug holes, and the plug pin contacts the plug terminal.

[0022] In the above technical solution, the second elastic sealing ring is a rubber sealing ring or a silicone sealing ring.

[0023] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0024] 1. The utility model adopts the first sealing ring as a single seal, and then sets the second elastic sealing ring on the outer surface of the connection between the plug and the socket, which plays a double sealing role. At the same time, when it is placed in water, the greater the water pressure, the greater the pressure on the second elastic sealing ring, which will tightly squeeze the second elastic sealing ring on the outer surface of the plug and the socket, thereby effectively ensuring the sealing and waterproof effect;

[0025] 2. The utility model has a simple structure, not only has a good waterproof effect, but also has a low cost;

[0026] 3. The connector in the utility model can withstand water pressure exceeding 2MPa without leaking, and has strong waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the first embodiment of the present utility model;

[0028] Figure 2 It is a cross-sectional structural diagram of the plug and the socket in the plugged-in state in the first embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of the structure of the plug in the first embodiment of the utility model (the first sealing ring and the second elastic sealing ring are not shown);

[0030] Figure 4 This is a schematic diagram of the structure of the socket in the first embodiment of the utility model (the positioning ring is close to the right annular protrusion);

[0031] Figure 5 This is a schematic diagram of the structure of the socket in the first embodiment of the utility model (the positioning ring is away from the right annular protrusion);

[0032] Figure 6 It is a structural schematic diagram of the right connecting member in the first embodiment of the utility model.

[0033] Among them: 1. Plug; 2. Socket; 3. Socket hole; 4. Plug-in end; 5. First sealing ring; 6. Second elastic sealing ring; 7. Left annular protrusion; 8. Right annular protrusion; 9. Left connecting piece; 10. Right connecting piece; 11. Right through hole; 12. Positioning ring; 13. Plug-in hole; 14. Pin; 15. Anti-fool convex strip; 16. Anti-fool groove; 17. Circuit. DETAILED DESCRIPTION

[0034] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0035] Example 1: See Figures 1 to 6 As shown, a waterproof connector comprises a plug 1 and a socket 2, wherein the left end of the socket 2 is provided with a plug hole 3, and the right end of the plug 1 is provided with a plug end 4, wherein the plug end 4 is plugged and matched with the plug hole 3, and a first sealing ring 5 is sleeved on the outer surface of the plug end 4, and the first sealing ring 5 seals the connection between the plug end 4 and the plug hole 3;

[0036] A second elastic sealing ring 6 is also provided, and the two ends of the second elastic sealing ring 6 are respectively sleeved on the outer surfaces of the plug 1 and the socket 2, and the middle part of the second elastic sealing ring 6 is sleeved on the outer surface between the right end surface of the plug 1 and the left end surface of the socket 2. The second elastic sealing ring 6 seals the connection between the plug 1 and the socket 2.

[0037] Wherein, the second elastic sealing ring is a rubber sealing ring or a silicone sealing ring. Preferably, the second elastic sealing ring is a rubber sealing ring. The second elastic sealing ring is tightly matched with the outer surface of the plug and the socket.

[0038] In this embodiment, the plug end of the plug is inserted into the jack of the socket, and then the first sealing is performed by the first sealing ring, wherein the first sealing ring also adopts an elastic sealing ring, which is made of rubber or silicone. However, if only the first sealing ring is set, the sealing effect is insufficient. In the case of high water pressure, water will enter the jack from the gap between the first sealing ring and the plug and the socket, which will cause water leakage. Therefore, a second elastic sealing ring is set, and the second elastic sealing ring is sleeved on the outer surface between the connection of the plug and the socket to play a second sealing role. At the same time, when the connector is in water, there will be water outside the connector, that is, the outer edge surface of the second elastic sealing ring will be subjected to water pressure. The deeper the depth of the connector in the water, that is, the greater the water pressure, the greater the force of the second elastic sealing ring covering the plug and the socket, which can better prevent water from entering from the edge of the plug, the socket and the second elastic sealing ring, and can effectively improve the waterproof effect and prevent the connector from leaking. Among them, after testing, the connector does not leak for a long time under a water pressure of 2MPa.

[0039] Among them, when it is used on an inclinometer, for example, an inclinometer needs to be connected every meter, so the length of the connecting line will be 1m, and connector plugs and sockets will be provided at both ends, which will be plugged into the inclinometers or other components at both ends respectively. In this way, when measuring the inclinometer, the connecting line and the connector are placed in the inclinometer tube for a long time and in water for a long time, which can also ensure the waterproof effect of the connector and prevent the connector from leaking.

[0040] Wherein, the first sealing ring is tightly matched with the outer surface of the plug end.

[0041] Two ends of the first sealing ring respectively abut against the right end surface of the plug and the left end surface of the socket.

[0042] In this way, after the plug and the socket are plugged together, the first sealing ring is compressed between the two, and the first sealing ring is elastically deformed to block the gap between the plug and the socket, thereby preventing water leakage and being able to withstand a certain pressure.

[0043] See also Figure 2 As shown, the first sealing ring 5 is arranged inside the second elastic sealing ring 6, the middle inner surface of the second elastic sealing ring 6 is tightly matched with the outer surface of the first sealing ring 5, and the two ends of the second elastic sealing ring 6 are tightly matched with the outer surface of the plug 1 and the outer surface of the socket 2 respectively.

[0044] The length of the second elastic sealing ring will be greater than that of the first elastic sealing ring, so that the two ends of the second elastic sealing ring will be outside the two ends of the first elastic sealing ring respectively, so that the second elastic sealing ring will completely cover the first elastic sealing ring, so that the first sealing ring will not directly contact the external water, and prevent the first sealing ring from being subjected to the external high water pressure, effectively ensuring the sealing and waterproof effect. At the same time, the second elastic sealing ring will be tightly matched with the outer surface of the plug and the socket, so that water can be prevented from entering the gap between the second elastic sealing ring and the plug and the socket. The outer diameter of the plug will be equal to the outer diameter of the socket, so that the outer surface of the plug will be flush with the outer surface of the socket.

[0045] See also Figure 2 , 3 As shown in 5, a left annular protrusion 7 is provided on the outer surface of the plug 1, and the left annular protrusion 7 is arranged close to the right end surface of the plug 1. A right annular protrusion 8 is provided on the outer surface of the socket 2, and the right annular protrusion 8 is arranged close to the left end surface of the socket 2.

[0046] The second elastic sealing ring 6 is disposed between the left annular protrusion 7 and the right annular protrusion 8 .

[0047] Wherein, two ends of the second elastic sealing ring are respectively arranged close to the left annular protrusion and the right annular protrusion.

[0048] At the same time, in this embodiment, the distance between the left annular protrusion and the right end face of the plug is equal to the distance between the right annular protrusion and the left end face of the socket. The length of the second elastic sealing ring is greater than or equal to 2 / 3 of the distance between the left annular protrusion and the right annular protrusion. By setting the left annular protrusion and the right annular protrusion, the second elastic sealing ring can be blocked, so that the end of the second elastic sealing ring can be prevented from moving to one side after being subjected to water pressure, so that the connection between the plug and the socket is exposed outside the second elastic sealing ring. At the same time, it is also ensured that during assembly, the second elastic sealing ring can cover the connection between the plug and the socket to ensure sealing and waterproof effects.

[0049] See also Figures 1 to 6 As shown, the outer movable sleeve of the plug 1 is provided with a left connecting piece 9, and the outer movable sleeve of the socket 2 is provided with a right connecting piece 10. The left connecting piece 9 is threadedly connected to the right connecting piece 10, and the left annular protrusion 7 limits the left connecting piece 9 from moving rightward and disengaging from the plug 1, and the right annular protrusion 8 limits the right connecting piece 10 from moving leftward and disengaging from the socket 2.

[0050] By setting the left connecting piece and the right connecting piece, the plug and the socket can be axially limited, ensuring that the plug and the socket will not separate after the plug and the socket are plugged in, and the connection stability and use quality of the connector can be guaranteed. The setting of the left annular protrusion and the right annular protrusion limits the movement of the left connecting piece to the right and the movement of the right connecting piece to the left, so that after the left connecting piece is connected to the right connecting piece, the left and right annular protrusions limit the mutual distance between the plug and the socket, and the axial limitation of the connector is realized.

[0051] See also Figures 1 to 3 As shown, the right end surface of the left connecting member 9 abuts against the left side surface of the left annular protrusion 7, and an external thread is provided on the right outer surface of the left connecting member 9;

[0052] See also Figure 1 , 2 4 to 6, a right through hole 11 is provided inside the right connecting member 10, and the outer diameter of the right through hole 11 is greater than or equal to the outer diameter of the right annular protrusion 8;

[0053] A positioning ring 12 is provided on the right inner surface of the right through hole 11, the inner diameter of the positioning ring 12 is smaller than the outer diameter of the right annular protrusion 8, and the left side surface of the positioning ring 12 abuts against the right side surface of the right annular protrusion 8;

[0054] An internal thread is arranged on the inner wall of the right through hole, and the right connecting piece is threadedly connected with the external thread of the left connecting piece via the internal thread.

[0055] When the plug and the socket are plugged in, the left end of the right connecting piece will be on the right side of the left end face of the socket, which makes it easy for the plug-in end to be inserted into the socket. After the plug and the socket are plugged in, the operator moves the left connecting piece to the left so that the right end face of the left connecting piece abuts against the left side face of the left annular protrusion, and then moves the right connecting piece to the left so that the right connecting piece and the left connecting piece are screwed together until the positioning ring abuts against the right side face of the right annular protrusion, so that the left connecting piece and the right connecting piece can be connected, preventing the plug and the socket from separating.

[0056] Furthermore, a gasket is provided between the left connecting piece and the left annular protrusion, and a gasket is also provided between the positioning ring and the right annular protrusion, so as to increase the connection strength and prevent damage and deformation of the left annular protrusion and the right annular protrusion.

[0057] See also Figure 2 , 3 As shown, at least one plug hole 13 is provided on the right side surface of the plug end 4, and a plug terminal is provided in each of the plug holes;

[0058] See also Figure 2 ,5 As shown, at least one plug pin 14 is disposed in the plug hole 3 and plugged into the plug hole 13 . Each of the plug pins 14 is plugged into one of the plug holes 13 , and the plug pin contacts the plug terminal.

[0059] Among them, the left end of the plug and the right end of the socket will be connected to the line 17 respectively, and the line will be electrically connected to the corresponding plug terminal and the pin respectively, so that after the plug and the socket are plugged in, and the pin and the plug terminal are in contact, the electrical connection of the connector can be achieved.

[0060] In this embodiment, there are multiple pins and multiple plug holes, and each pin is inserted into a plug hole. In order to ensure the stable plugging of the plug end and the plug hole, and to ensure that the pin is smoothly inserted into the corresponding plug hole, a foolproof convex strip 15 is provided in the plug hole, and a foolproof groove 16 facing the foolproof convex strip is provided on the outer surface of the plug end. The foolproof convex strip is inserted into the foolproof groove. When the plug end needs to be inserted into the plug hole, the foolproof convex strip faces the foolproof groove, and the plug end can be smoothly inserted into the plug hole to achieve the plug-in matching of the plug and the socket.

[0061] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0062] In the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral one; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, for example, the two can form a mechanical abutment or abutment connection through abutment, contact, etc., the two can also be directly hung or hung through an intermediate medium, etc., or it can be the internal connection of the two elements or the interaction relationship between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A waterproof connector, comprising a plug and a socket, wherein the left end of the socket is provided with a plug hole, and the right end of the plug is provided with a plug end, and the plug end is plugged and matched with the plug hole, characterized in that: A first sealing ring is sleeved on the outer surface of the plug end, and the first sealing ring seals the connection between the plug end and the plug hole; A second elastic sealing ring is also provided, the two ends of which are respectively sleeved on the outer surfaces of the plug and the socket, and the middle part of the second elastic sealing ring is sleeved on the outer surface between the right end surface of the plug and the left end surface of the socket, and the second elastic sealing ring seals the connection between the plug and the socket.

2. The waterproof connector according to claim 1, characterized in that: The first sealing ring is tightly matched with the outer surface of the plug end.

3. The waterproof connector according to claim 1, characterized in that: Two ends of the first sealing ring respectively abut against the right end surface of the plug and the left end surface of the socket.

4. The waterproof connector according to claim 1, characterized in that: The first sealing ring is arranged inside the second elastic sealing ring, the middle inner surface of the second elastic sealing ring is tightly matched with the outer surface of the first sealing ring, and the two ends of the second elastic sealing ring are tightly matched with the outer surface of the plug and the outer surface of the socket respectively.

5. The waterproof connector according to claim 1, characterized in that: A left annular protrusion is provided on the outer surface of the plug, and a right annular protrusion is provided on the outer surface of the socket.

6. The waterproof connector according to claim 5, characterized in that: The second elastic sealing ring is arranged between the left annular protrusion and the right annular protrusion; And / or, two ends of the second elastic sealing ring are respectively arranged close to the left annular protrusion and the right annular protrusion.

7. The waterproof connector according to claim 5, characterized in that: The outer movable sleeve of the plug is provided with a left connecting piece, and the outer movable sleeve of the socket is provided with a right connecting piece. The left connecting piece is threadedly connected to the right connecting piece, and the left annular protrusion limits the left connecting piece from moving rightward and disengaging from the plug, and the right annular protrusion limits the right connecting piece from moving leftward and disengaging from the socket.

8. The waterproof connector according to claim 7, characterized in that: The right end surface of the left connecting piece abuts against the left side surface of the left annular protrusion, and an external thread is provided on the outer surface of the left connecting piece; A right through hole is provided inside the right connecting piece, and the outer diameter of the right through hole is greater than or equal to the outer diameter of the right annular protrusion; A positioning ring is provided on the right inner surface of the right through hole, the inner diameter of the positioning ring is smaller than the outer diameter of the right annular protrusion, and the left side surface of the positioning ring abuts against the right side surface of the right annular protrusion; An internal thread is arranged on the inner wall of the right through hole, and the right connecting piece is threadedly connected to the external thread of the left connecting piece via the internal thread.

9. The waterproof connector according to claim 1, characterized in that: At least one plug hole is provided on the right side surface of the plug end, and a plug terminal is provided in each of the plug holes; At least one plug pin is arranged in the plug hole and is plugged and matched with the plug hole. Each of the plug pins is inserted in one of the plug holes, and the plug pin contacts the plug terminal.

10. The waterproof connector according to claim 1, characterized in that: The second elastic sealing ring is a rubber sealing ring or a silicone sealing ring.

Images