Split type instrument waterproof cable joint

Abstract

The utility model discloses a kind of split type instrument waterproof cable joint, including shell connecting pipe, and tight nut, cable, joint base subassembly and plug connector subassembly, the top of the shell connecting pipe is equipped with and tight nut, the cable is inserted into plug connector subassembly, cable surface is wrapped with wire tail cover, the cable surface is equipped with conical plug, the outer wall of conical plug is covered with fastening nut.The utility model is wrapped in the cable surface by being equipped with wire tail cover, it supports and prevents bending and preliminary protection effect, conical plug is pressed tightly covered in the cable surface by fastening nut, realizes final waterproof at wiring, plug connector subassembly internal PIN spring needle is connected on sensor or communication line, after being inserted in corresponding joint base subassembly PIN spring needle by plug connector subassembly alignment, screwing and cap realize plug connector subassembly and joint base subassembly connection, the function of multistage waterproof sealing of split type instrument cable joint is improved to improve waterproof effect.

Description

Technical Field

[0001] This utility model relates to the field of cable connector technology, specifically a split-type waterproof instrument cable connector. Background Technology

[0002] Encapsulation using silicone or epoxy resin often achieves moisture protection, but it cannot prevent water from entering the wiring junction, leading to water accumulation in the junction box and increasing the risk of immersion failure. Waterproof connectors typically use a clamp-type design, where the clamp is tightened by screwing in threads to secure the rubber seal and achieve a tight seal. However, this method is limited by on-site installation conditions; incorrect installation angles and harsh environments can easily lead to gaps and loosening, resulting in waterproofing failure. Since flow meters are often installed in manholes or at a certain height in industrial pipelines, they are often designed as separate units for easy reading and maintenance. Currently, the flow meter industry typically uses encapsulation and terminal block wiring for separate wiring, or uses readily available waterproof plugs to achieve waterproofing. While encapsulation provides good waterproofing, the hardened adhesive often makes disassembly difficult during later installation and maintenance, increasing maintenance costs.

[0003] The existing defects of split-type waterproof instrument cable connectors are: Patent CN113725659A discloses an energy-saving waterproof cable connector, which states that "existing waterproof cable connectors are inconvenient to install and have small contact areas between the male and female connectors, resulting in significant current loss. The technical solution of this invention is: an energy-saving waterproof cable connector, including a male connector, a female connector, a first shielding cover, and a second shielding cover, etc. The first shielding cover is fixedly attached to the right side of the outer surface of the male connector, and the second shielding cover is fixedly attached to the left side of the outer surface of the female connector. The left side of the first shielding cover has a curved portion and a clamping portion, and the right side of the second shielding cover has a bent portion. This invention designs..." The first and second shielding covers, when the male and female connectors are plugged together, the first shielding cover clamps the bent part of the second shielding cover through the curved part and the clamping part, so that the first and second shielding covers are tightly plugged together. The operation is convenient and waterproof. It overcomes the problem of inconvenient installation caused by the connection of nuts in the existing technology. However, it does not take into account the problem that the glue often hardens and sticks during disassembly and maintenance, which makes disassembly difficult, increases the cost of later maintenance, and cannot prevent water from entering the wiring, which will cause water to remain in the junction box and increase the risk of immersion failure.

[0004] In view of this, it is necessary to develop a split-type waterproof cable connector for instruments, so as to facilitate disassembly and maintenance in the later stage, reduce maintenance costs, prevent water from entering the wiring point, and reduce the failure of the split-type waterproof cable connector due to immersion. Utility Model Content

[0005] The purpose of this utility model is to provide a split-type waterproof instrument cable connector to solve the technical problems mentioned in the background art, such as the difficulty of disassembly due to the hardening and adhesion of adhesive during later disassembly and maintenance, which increases the cost of later maintenance and cannot prevent water from entering the wiring, resulting in water in the junction box and increasing the risk of immersion failure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a split-type waterproof instrument cable connector, comprising a housing connecting tube, a tightening nut, a cable, a connector base assembly, and a plug-in connector assembly. The top of the housing connecting tube is fitted with a tightening nut. The cable is inserted into the plug-in connector assembly, and a cable end sleeve is wrapped around the cable surface. A tapered plug is installed on the cable surface, and a tightening nut covers the outer wall of the tapered plug. The connector base assembly includes a PIN spring pin, a rubber sealing ring, a sealing seat, an O-ring, a PCB circuit board, and an earless retaining ring. The top of the tightening nut is fitted with a rubber sealing ring, the top of the rubber sealing ring is fitted with a sealing seat, the top of the sealing seat is fitted with an O-ring, the top of the O-ring is fitted with a PCB circuit board, and the top of the PCB circuit board is fitted with a PIN spring pin.

[0007] Preferably, the PIN spring pin is linearly connected to the sensor.

[0008] Preferably, the PIN spring pin is linearly connected to the communication line.

[0009] According to the claim, a split-type waterproof instrument cable connector is characterized in that: the connector assembly includes a female base, a cap, a tapered plug, a fastening nut, and a PIN female base, wherein the female base is located above the PIN spring pin, the lugless retaining ring is located above the female base, the PIN female base is located above the lugless retaining ring, and the cap is located above the PIN female base.

[0010] Preferably, the cap is connected to the connector base assembly.

[0011] Preferably, the cable is in contact with the PCB circuit board and the PIN spring pin.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses O-rings and rubber sealing rings to seal each connection part, satisfying the waterproof function under natural conditions. The cable is connected to the plug connector assembly, and the cable is soldered to the PIN female. The number of signal transmissions in the cable group is 1 to 10, which is widely applicable and meets the needs of most instruments. The tail end adopts two-level protection. The cable tail sleeve is wrapped around the surface of the cable, which provides support, prevents bending, and provides initial protection. The conical plug is pressed and covered by the fastening nut to achieve final waterproofing at the connection point. The PIN spring pin inside the plug connector assembly is connected to the sensor or communication line. After the plug connector assembly is aligned and inserted into the corresponding PIN spring pin of the connector base assembly, it is tightened and the cap is tightened to connect the plug connector assembly and the connector base assembly. This realizes the multi-level waterproof sealing of the split instrument cable connector and improves the waterproof effect. 2. This utility model effectively prevents water from entering the instrument's waterproof cable connector by employing a double-seal design. The PIN female connector is mounted on a PCB board, which is then pressed against an O-ring by a lugless retainer, achieving an internal seal. The connector's interior is coated with conformal coating to isolate moisture within the chamber, preventing it from penetrating the connector base and entering the sensor, causing sensor failure or internal circuit damage. Furthermore, in the event of improper operation causing the PIN cap to loosen and moisture to seep into the PIN connection chamber, the symmetrical PCB sealing structure completely isolates the moisture, effectively preventing further circuit damage. If moisture intrusion causes a short circuit in the PIN connection and the instrument reports an anomaly, the PIN cap can be opened, the connector removed, and easily wiped and dried to restore its original condition, reducing maintenance costs. This design effectively prevents further circuit damage and reduces maintenance costs for the separate instrument connector. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main dispersed structure of this utility model; Figure 2 This is a front view structural diagram of the present utility model; Figure 3 This is a schematic diagram of the cable structure of this utility model.

[0014] In the diagram: 1. Housing connecting tube; 2. Tightening nut; 3. Rubber sealing ring; 4. Sealing seat; 5. O-ring; 6. PCB circuit board; 7. Female connector; 8. Earless retaining ring; 9. Connecting cap; 10. Conical plug; 11. Fastening nut; 12. Cable; 13. Wire end sleeve; 14. PIN female connector; 15. PIN spring pin. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please see Figure 1 , Figure 2 and Figure 3 The conical plug 10 is a rubber part that can be deformed by compression. The inner hole of the conical plug 10 is a straight cylinder with the same outer diameter as the cable 12. The outer surface is a conical surface, presenting an inverted T shape. When the inner conical surface of the fastening nut 11 is screwed in through the thread, it compresses the outer conical surface of the conical plug 10, causing it to deform. This tightly covers the surface of the cable 12 and the inner conical surface of the fastening nut 11, achieving a seal for the cable 12. At the same time, due to the downward pressure, the bottom plane of the conical plug fits and seals with the inner plane of the female seat, achieving a waterproof function.

[0019] The final waterproofing is achieved through multiple layers. First, the cable end sleeve 13 initially tightens the cable 12 to achieve primary dust and water protection. Second, the aforementioned cone shape achieves complete waterproofing of the exterior facade. On the other side, the PCB circuit board 6 is fully soldered to prevent leakage. The O-ring 5 is sealed by the earless retaining ring 8, thus achieving a sealed waterproofing and ultimately making the upper part completely waterproof.

[0020] The cable end sleeve 13 is made of rubber and its function is to support the cable 12 by covering the cable 12. The installation method is that the cable 12 passes through the inner hole of the cable end sleeve 13. The inner diameter of the cable end sleeve 13 is slightly smaller than the outer diameter of the cable 12, so it can stretch and cover the surface of the cable 12 better. Then, the head of the fastening nut 11 is inserted, so that the head step is locked into the groove of the cable end sleeve 13 to complete the installation.

[0021] Both the PIN female connector 14 and the PIN spring pin 15 are fixed to one side of the PCB circuit board 6 by soldering. Ten soldering vias are evenly distributed on the PCB circuit board 6. The PIN pin is soldered to one side of the via, and the cable 12 is soldered to the other side to realize signal transmission.

[0022] Double sealing has two meanings: one refers to the socket being completely sealed on one side and the plug being completely sealed on the other side, thus achieving double sealing; the other refers to the socket being completely sealed on one side with the connecting pipe and the other side being completely sealed by the O-ring 5 pressed by the PCB circuit board 6, and the plug being completely sealed on one side with the cable 12 and the other side being completely sealed by the O-ring 5 pressed by the PCB circuit board 6, thus achieving double sealing on both sides.

[0023] Both the O-ring 5 and the rubber sealing ring are flat seals with a compression of 15-20%.

[0024] The PCB soldering pins and spring pins inside the plugs and sockets are uniformly coated with a 0.1mm~0.3mm thick conformal coating, and then left to dry naturally.

[0025] The split-type instrument waterproof cable connector has laser-etched markings with corresponding position lines, which can be inserted directly. The PIN female socket 14 has a groove on its surface, and the PIN pin can spring into the limit position normally. The PIN cap 9 uses a conventional threaded connection. The PIN cap has an internal thread, and the sealing seat 4 has an external thread at the head.

[0026] The PCB circuit boards 6 are placed symmetrically. The installation position and size of the PCB circuit boards 6 inside the plug and socket are the same, the sealing method is the same, and the retaining ring is the same. After sealing, water vapor isolation can be achieved.

[0027] The second type of double-sealing function means that both the plug and the socket are internally sealed on both sides. Therefore, loosening the cap 9 does not affect the internal seal. Only the space in the middle of the PCB circuit board 6 on both sides comes into contact with the outside. Therefore, it can be restored by wiping and blowing it dry.

[0028] The purpose of waterproofing is to prevent moisture from entering the instrument and causing damage to sensors or other electrical components. The cost of damage to sensors and electrical components can be controlled by sealing and protection, thus reducing maintenance costs caused by water ingress.

[0029] Please see Figure 1 , Figure 2 and Figure 3 A split-type waterproof instrument cable connector includes a housing connecting tube 1, a tightening nut 2, a cable 12, a connector base assembly, and a plug-in connector assembly. The tightening nut 2 is installed on the top of the housing connecting tube 1. The cable 12 is inserted into the plug-in connector assembly. A cable end sleeve 13 is wrapped around the surface of the cable 12. A conical plug 10 is installed on the surface of the cable 12, and a fastening nut 11 covers the outer wall of the conical plug 10. The connector base assembly includes a PIN spring pin 15, a rubber sealing ring 3, a sealing seat 4, an O-ring 5, a PCB circuit board 6, and a lugless retaining ring 8. The rubber sealing ring 3 is installed on the top of the tightening nut 2. The sealing seat 4 is installed on the top of the rubber sealing ring 3. The O-ring 5 is installed on the top of the sealing seat 4. The PCB circuit board 6 is installed on the top of the O-ring 5. The PIN spring pin 15 is installed on the top of the PCB circuit board 6. The PIN spring pin 15 is linearly connected to a sensor and a communication line. The cable 12 is in contact with the PCB circuit board 6 and the PIN spring pin 15. Cable 12 is connected to PIN spring pin 15 and PIN female seat 14 via fastening nut 11, cable end sleeve 13, conical plug 10, and ferrule 9. Each connection part is sealed with O-rings and rubber sealing rings 3 to meet the waterproof function under natural conditions. Cable 12 is inserted into the plug connector assembly and soldered to PIN female seat 14. The number of signal transmissions in the cable group is 1 to 10, which is widely applicable and meets the needs of most instruments. The tail end adopts two-level protection. The cable end sleeve 13 is wrapped around the surface of cable 12, which provides support, prevents bending, and provides initial protection. The conical plug 10 is pressed and covered by the fastening nut 11 to achieve final waterproofing at the connection point. The PIN spring pin inside the plug connector assembly is connected to the sensor or communication line. After the plug connector assembly is aligned and inserted into the corresponding PIN spring pin of the connector base assembly, the ferrule 9 is tightened to connect the plug connector assembly and the connector base assembly. This realizes the multi-level waterproof sealing of the split instrument cable connector to improve the waterproof effect.

[0030] Please see Figure 1 , Figure 2 Hehe Figure 3The connector assembly includes a female connector 7, a cap 9, a tapered plug 10, a fastening nut 11, and a PIN female connector 14. The female connector 7 is located above the PIN spring pin 15, the lugless retaining ring 8 is located above the female connector 7, the PIN female connector 14 is located above the lugless retaining ring 8, and the cap 9 is located above the PIN female connector 14. The cap 9 connects to the connector base assembly, employing a double-seal design to effectively prevent the water-repellent cable 12 from entering the instrument waterproof cable connector. The PIN female connector is mounted on the PCB board, and the PCB board is pressed against the O-ring by the lugless retaining ring 8, achieving an internal seal. The inside of the connector is coated with conformal coating to isolate moisture and other contaminants within the cavity. Indoors, moisture will not continue to seep into the connector base and then into the sensor, causing sensor failure or damage to the internal circuitry. In addition, if improper operation causes the parallel cap 9 to loosen and moisture to seep into the PIN connection chamber, the symmetrical PCB sealing structure can completely isolate the moisture inside the chamber, effectively preventing further damage to the circuit. Furthermore, if moisture enters and causes a short circuit in the PIN connection, resulting in an abnormal instrument report, the parallel cap 9 can be opened, the connector pulled out, and a simple wipe and blow-dry can restore it to its original state, reducing maintenance costs. This achieves the function of the split instrument connector effectively preventing further damage to the circuit and reducing maintenance costs.

[0031] Working principle: Each connection part is sealed with O-rings and rubber sealing rings 3 to meet the waterproof function under natural conditions. Cable 12 is connected to the plug-in connector assembly and soldered to the PIN female socket 14. The signal transmission capacity of the cable group is 1 to 10 channels, with a wide range of applications to meet the needs of most instruments. The tail end adopts two-stage protection. The cable tail sleeve 13 wraps around the surface of the cable 12, providing support, preventing bending, and initial protection. The conical plug 10 is pressed and covered by the fastening nut 11 to achieve final waterproofing at the connection point. The PIN spring pin inside the plug-in connector assembly is connected to the sensor or communication line. After the plug-in connector assembly is aligned and inserted into the corresponding PIN spring pin of the connector base assembly, the cap 9 is tightened to connect the plug-in connector assembly and the connector base assembly. This achieves multi-stage waterproof sealing of the split instrument cable connector to improve the waterproof effect. The double sealing method has... To effectively prevent water from entering the instrument's waterproof cable connector, the PIN female socket is mounted on the PCB board, and the PCB board is pressed tightly onto the O-ring by the earless retaining ring 8, achieving an internal seal. The inside of the connector is coated with conformal coating to isolate moisture within the chamber, preventing it from penetrating to the connector base and entering the sensor, causing sensor failure or internal circuit damage. Furthermore, if improper operation causes the parallel cap 9 to loosen, allowing moisture to penetrate into the PIN connection chamber, the symmetrical PCB sealing structure completely isolates the moisture, effectively preventing further circuit damage. If moisture ingress causes a short circuit in the PIN connection and the instrument reports an abnormality, the parallel cap 9 can be opened, the connector removed, and easily wiped and dried to restore its original condition, reducing maintenance costs. This design effectively prevents further circuit damage and reduces maintenance costs for the split-type instrument connector.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A split-type waterproof instrument cable connector, comprising a housing connecting tube (1), a tightening nut (2), a cable (12), a connector base assembly, and a plug-in connector assembly, characterized in that: The top of the housing connecting tube (1) is fitted with a tightening nut (2). The cable (12) is inserted into the plug connector assembly. The surface of the cable 12 is wrapped with a wire tail sleeve (13). The surface of the cable (12) is fitted with a conical plug (10). The outer wall of the conical plug (10) is covered with a fastening nut (11). The connector base assembly includes a PIN spring pin (15), a rubber sealing ring (3), a sealing seat (4), an O-ring (5), a PCB circuit board (6), and an earless retaining ring (8). The top of the tightening nut (2) is fitted with a rubber sealing ring (3). The top of the rubber sealing ring (3) is fitted with a sealing seat (4). The top of the sealing seat (4) is fitted with an O-ring (5). The top of the O-ring (5) is fitted with a PCB circuit board (6). The top of the PCB circuit board (6) is fitted with a PIN spring pin (15).

2. A split-type waterproof instrument cable connector according to claim 1, characterized in that: The PIN spring pin (15) is linearly connected to the sensor.

3. A split-type waterproof instrument cable connector according to claim 1, characterized in that: The PIN spring pin (15) is linearly connected to the communication line.

4. A split-type waterproof instrument cable connector according to claim 2 or 3, characterized in that: The connector assembly includes a female connector (7), a cap (9), a tapered plug (10), a fastening nut (11), and a PIN female connector (14). The female connector (7) is located above the PIN spring pin (15), the lugless retaining ring (8) is located above the female connector (7), the PIN female connector (14) is located above the lugless retaining ring (8), and the cap (9) is located above the PIN female connector (14).

5. A split-type waterproof instrument cable connector according to claim 4, characterized in that: The cap (9) is connected to the connector base assembly.

6. A split-type waterproof instrument cable connector according to claim 5, characterized in that: The cable (12) is in contact with the PCB circuit board (6) and the PIN spring pin (15).

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