Plug and socket connector for seabed sensing node

Abstract

The utility model discloses a plug and socket connector for a seabed sensing node, which is provided with a socket and an external indicating lamp plug, the socket is connected with a node shell, the socket is provided with one of a contact pin and a jack, and the external indicating lamp plug is provided with the other one of the contact pin and the jack. The submarine sensing node has the advantages that the structure is simple, the cost is low, an operator can conveniently and visually confirm the state of the submarine sensing node, and the like, and the external indicating lamp plug is matched with the socket in an inserted mode through the contact pin and the jack, and the contact pin or the jack of the external indicating lamp plug is connected with the pin of the light-emitting lamp bead.

Description

Technical Field

[0001] The utility model relates to the technical field of ocean sensors, in particular to a plug and socket connector for a seabed sensing node. Background Art

[0002] As a type of ocean sensor, the submarine sensing node can realize information collection and data processing on the seabed. Usually, the internal processing circuit of the submarine sensing node is covered with a thick metal shell, which can help the submarine sensing node withstand the water pressure from the seawater. In order to achieve the sealing and waterproof effect and strength, only a very small number of through holes are set on the metal shell as sensor input, power input or data output.

[0003] When the submarine sensing node is not connected to a dedicated device, the operator cannot visually confirm the relevant status of the submarine sensing device, such as whether the device control system is in normal working condition, the remaining power of the system's battery, and the remaining capacity of the circuit memory. Therefore, there is an urgent need for a device that can visually confirm the status of the submarine sensing node. Utility Model Content

[0004] The purpose of the present utility model is to solve the deficiencies of the above-mentioned prior art and to provide a plug and socket connector for a submarine sensing node which has a simple structure, low cost and is convenient for operators to intuitively confirm the status of the submarine sensing node.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A plug and socket connector for a submarine sensing node, characterized in that: a socket and an external indicator light plug are provided, the socket being connected to an outer shell of the node, the socket being provided with one of a pin and a socket, the external indicator light plug being provided with the other of a pin and a socket, the socket and the external indicator light plug being plugged into each other via the pin and the socket;

[0007] The pin or socket of the external indicator light plug is connected to the pin of the luminous lamp bead; the structure is simple and the cost is low. The operator can judge the current state of the submarine sensing node by the luminous state of the luminous lamp bead, and make corresponding solutions in time according to the prompt of the luminous lamp bead.

[0008] The socket of the utility model comprises a socket body, a pin and a cylindrical protrusion. The pin is inserted into the socket body along the axial direction. A through hole for the pin to pass through is opened in the middle of the cylindrical protrusion. The cylindrical protrusion is sleeved outside the pin and connected to the socket body.

[0009] The external indicating lamp plug comprises a plug body, an inner hole axially arranged on the plug body, a socket inserted into the inner hole, a cylindrical hole groove matched with the cylindrical protrusion arranged at one end of the inner hole close to the socket, and a ring protrusion inwardly extended on the inner wall of the cylindrical hole groove;

[0010] When the socket is plugged with the external indicating lamp plug, the pin is inserted into the socket, and the cylindrical protrusion is inserted into the cylindrical hole groove and extrudes the ring protrusion;

[0011] The ring protrusion is made of soft polyurethane material, and the cylindrical protrusion is made of hard PC material;

[0012] The sealing of the socket and the external indicating lamp plug is realized, the structure is simple, the materials of the ring protrusion and the cylindrical protrusion are such that the cylindrical protrusion inserted into the cylindrical hole groove can extrude and compress the ring protrusion, and the sealing effect is ensured.

[0013] The external indicating lamp plug comprises a plug body, a pin and a cylindrical protrusion, the pin is axially inserted into the plug body, a through hole for the pin to pass through is arranged in the middle of the cylindrical protrusion, and the cylindrical protrusion is sleeved outside the pin and connected with the plug body;

[0014] The socket comprises a socket body, an inner hole axially arranged on the socket body, a socket arranged in the inner hole, a cylindrical hole groove matched with the cylindrical protrusion arranged at one end of the inner hole close to the external indicating lamp plug, and a ring protrusion inwardly extended on the inner wall of the cylindrical hole groove;

[0015] When the socket is plugged with the external indicating lamp plug, the pin is inserted into the socket, and the cylindrical protrusion is inserted into the cylindrical hole groove and extrudes the ring protrusion;

[0016] The ring protrusion is made of soft polyurethane material, and the cylindrical protrusion is made of hard PC material;

[0017] The sealing of the socket and the external indicating lamp plug is realized, the structure is simple, the materials of the ring protrusion and the cylindrical protrusion are such that the cylindrical protrusion inserted into the cylindrical hole groove can extrude and compress the ring protrusion, and the sealing effect is ensured.

[0018] The cylindrical protrusion comprises a cylindrical segment and a guide segment, the cylindrical segment and the guide segment are coaxially arranged and connected, and the guide segment is close to the plugging end of the pin; the guide segment is arranged to facilitate the smooth insertion of the cylindrical protrusion into the cylindrical hole groove.

[0019] The external indicating lamp plug further comprises a locking nut and an axial limiting piece, the locking nut is sleeved outside the plug body and axially limited by the axial limiting piece and can rotate in the circumferential direction;

[0020] The outer wall of the socket body is provided with an external thread. When the socket is plugged into the external indicator light plug, the internal thread of the locking nut is threadedly connected with the external thread of the outer wall of the socket body and drives the plug body to move axially so that the pin and the jack are tightly plugged.

[0021] The socket body of the utility model is provided with one of the guide groove and the raised guide strip extending along its axial direction, and the plug body is provided with the other of the guide groove and the raised guide strip extending along its axial direction. The guide groove and the raised guide strip are slidably matched to ensure that when the locking nut is rotated, the plug body can move along the axial direction, thereby ensuring the tightening effect of the pin and the socket.

[0022] The axial limiter of the utility model includes a limit block and a retaining spring. The outer wall of the plug body is provided with an annular groove along its circumference. The limit block is sleeved on the annular groove. The annular groove and the plug body form an annular front limit surface and a rear limit surface.

[0023] The locking nut includes a threaded section and a limiting section. The inner diameter of the limiting section is larger than the inner diameter of the threaded section. An annular clamping block limiting surface is formed between the limiting section and the threaded section. A retaining ring groove is formed on the inner wall of the retaining section. The retaining ring is clamped in the retaining ring groove.

[0024] The cross-sectional shape of the limit card block is a step-shaped, and the limit card block includes a front limit block, a middle limit block and a rear limit block. The front end side of the middle limit block is connected to the front limit block, the other side of the rear end of the middle limit block is connected to the rear limit block, the other side of the front end of the middle limit block is matched with the card block limit surface, and the rear end side of the middle limit block is matched with the rear limit surface of the plug body;

[0025] The front end surface of the front limit block cooperates with the front limit surface of the plug body, and the rear end surface of the rear limit block cooperates with the clamping spring;

[0026] The overall height of the front limit block and the middle limit block is less than the height of the annular groove;

[0027] The limit block includes two semicircular blocks, which are butt-jointed and clamped in the annular groove;

[0028] This allows the locking nut and the plug body to rotate relative to each other in the circumferential direction but be limited in the axial direction. The height of the front limit block and the middle limit block are set to allow for axial adjustment clearance, making it easy to plug and unplug.

[0029] The locking nut of the present invention is further provided with a coaxially arranged intermediate section between the threaded section and the limiting section. The inner diameter of the intermediate section is smaller than the inner diameter of the limiting section, and an annular clamping block limiting surface is formed between the intermediate section and the limiting section.

[0030] The plug body includes an insertion section, an intermediate limiting section, an axial limiting section and a lamp bead installation section. The insertion section, the intermediate limiting section, the axial limiting section and the lamp bead installation section are coaxially connected in sequence. The outer diameter of the intermediate limiting section matches the inner diameter of the intermediate section of the locking nut, and the axial limiting section forms a circumferential annular groove to ensure the stability of the lock nut and the plug body.

[0031] The axial limit member of the utility model includes a limit block, and the locking nut includes a threaded section and a limit section. One of the outer wall of the plug body and the inner wall of the locking nut limit section is provided with an annular groove along its circumference, and the other of the outer wall of the plug body and the inner wall of the locking nut limit section is connected to the limit block, and the limit block is engaged with the annular groove; so that the locking nut and the plug body can rotate relative to each other in the circumferential direction but are limited in the axial direction.

[0032] The light-emitting lamp bead of the present invention is a three-pin lamp bead, one positive pin of the light-emitting lamp bead is electrically connected to the first socket or the first pin in the external indicator light plug, the other positive pin of the light-emitting lamp bead is electrically connected to the second socket or the second pin in the external indicator light plug, and the negative pin of the light-emitting lamp bead is electrically connected to the third socket or the third pin in the external indicator light plug.

[0033] The different colors and lighting states of the luminous lamp beads can reflect the status of different modules of the submarine sensing node.

[0034] The beneficial effects of the present invention are as follows: by setting up the external indicator light plug, the operator can judge the current state of the submarine sensing node by the luminous state of the luminous lamp beads, and make corresponding solutions in time according to the prompts of the luminous lamp beads; the structural setting of the socket and the external indicator light plug can realize the sealing of the connection between the socket and the external indicator light plug, with a simple structure and good sealing effect; the setting of the locking nut ensures that the socket and the external indicator light plug can be tightly plugged in. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a structural diagram of the submarine sensing node without connecting the external indicator light plug.

[0036] Figure 2 This is a schematic diagram of the assembly and connection between the submarine sensing node socket and the external indicator light plug.

[0037] Figure 3 This is a schematic diagram of the appearance and structure of the external indicator light plug.

[0038] Figure 4 It is a schematic diagram of the structure of the external indicator light plug.

[0039] Figure 5 This is a schematic diagram of the internal structure of the plug body.

[0040] Figure 6It is a schematic diagram of the end face structure of the plug body.

[0041] Figure 7 This is a schematic diagram of the socket structure.

[0042] Figure 8 This is a schematic diagram of the internal structure of the socket.

[0043] Figure 9 This is a circuit diagram of connecting a two-pin light-emitting lamp bead to a socket.

[0044] Figure 10 This is a circuit diagram of the connection between a three-legged light bead and a socket.

[0045] Reference numerals: node outer shell-1;

[0046] Socket 2, base 201, sleeve 202, external thread 2021, guide groove 2022, cylindrical protrusion 203, pin 204;

[0047] External indicator light plug 3, locking nut 301, threaded section 3011, stop section 3012, stop surface 3013, plug body 302, ring groove 3021, socket frame plate 3022, multi-hole wiring plate 3023, inner hole 3024, cylindrical hole groove 30241, annular protrusion 30242, raised guide strip 3025, front stop surface 30261, rear stop surface 30262, semicircular stop block 303, front stop block 3031, middle stop block 3032, rear stop block 3033, retaining spring 304, transparent light guide 305, luminous lamp bead 306, socket 307, socket 1 3071, socket 2 3072, socket 3 3073, wiring 308. DETAILED DESCRIPTION

[0048] The present invention will be described below with reference to the accompanying drawings and embodiments.

[0049] Embodiment 1:

[0050] As shown in the accompanying drawings, a plug and socket connector for a submarine sensing node is provided with a socket 2 and an external indicator light plug 3. The socket 2 is connected to the node outer shell 1. The socket 2 is provided with one of a pin and a jack. The external indicator light plug 3 is provided with the other of a pin and a jack. The socket 2 and the external indicator light plug 3 are plugged together via the pin and the jack.

[0051] The pin or socket of the external indicator light plug 3 is connected to the pin of the luminous lamp bead 306; the structure is simple and the cost is low. The operator can judge the current state of the submarine sensing node by the luminous state of the luminous lamp bead 306, and make corresponding solutions in time according to the prompt of the luminous lamp bead.

[0052] In this embodiment, the socket 2 is provided with a plurality of pins, and the external indicator light plug 3 is provided with a plurality of jacks. The socket 2 includes a socket body, pins 204, and a cylindrical protrusion 203. The socket body includes a sleeve 202 and a base 201. One end of the sleeve 202 is fixedly connected to the base 201, and the other end is provided with an opening. The base 201 is fixedly connected to the node outer shell 1. The sleeve 202 has a pin 204 inserted axially inside. The pin 204 passes through a through-hole on the base 201 and extends into the node outer shell 1 to connect to the circuit inside the node outer shell. The pin 204 is fixedly connected to the base 201.

[0053] The cylindrical protrusion 203 has a through hole in the middle thereof for the insertion pin 204 to pass through. The cylindrical protrusion 203 is sleeved outside the insertion pin 204 and connected to the base.

[0054] The external indicator light plug 3 includes a plug body 302, which has an axially arranged inner hole 3024, into which a socket 307 made of a conductive material is inserted. An end of the inner hole 3024 near the socket is provided with a cylindrical hole groove 30241 that cooperates with the cylindrical protrusion 203, and an annular protrusion 30242 extending inwardly from the inner wall of the cylindrical hole groove 30241.

[0055] When the socket 2 is plugged into the external indicator light plug 3, the pin 204 is inserted into the jack 307, the cylindrical protrusion 203 is inserted into the cylindrical hole 30241 and squeezes the annular protrusion 30242, and the cylindrical protrusion 203 and the annular protrusion 30242 are interference fit;

[0056] The sealing of the socket 2 and the external indicator light plug 3 is achieved, the structure is simple, the sealing effect is good, and the sealing effect can be guaranteed when used above water or underwater.

[0057] In this embodiment, a plurality of annular protrusions 30242 are provided on the cylindrical hole groove 30241 along its axial direction to further ensure the sealing effect.

[0058] In this embodiment, the socket and the cylindrical protrusion on the socket are made of hard PC material, and the plug body is made of soft polyurethane material, so that the cylindrical protrusion 203 inserted into the cylindrical hole 20341 can squeeze and press the annular protrusion 30242 to ensure the sealing effect.

[0059] In this embodiment, the plug body is formed by thermoplastic injection molding using polyurethane material.

[0060] The number of pins on the socket corresponds to the number of jacks of the external indicator light plug and is set according to specific needs. In this embodiment, a six-core plug is taken as an example.

[0061] The cylindrical protrusion 203 includes a cylindrical section and a guide section, which are coaxially arranged and connected. The guide section is close to the plug-in end of the pin 204. The setting of the guide section facilitates the cylindrical protrusion 203 to be smoothly inserted into the cylindrical hole 30241.

[0062] In this embodiment, the cylindrical hole groove 30241 also includes a cylindrical section and a guide section. The cylindrical section of the cylindrical hole groove 30241 cooperates with the cylindrical section of the cylindrical protrusion 203, and the guide section of the cylindrical hole groove 30241 cooperates with the guide section of the cylindrical protrusion 203. The guide section can adopt a hemispherical, frustum-shaped, conical or other structures, and is provided with a guiding slope to play a guiding role during insertion.

[0063] The external indicator light plug 3 further includes a locking nut 301 and an axial limiter. The locking nut 301 is sleeved on the outside of the plug body 302 and is axially limited by the axial limiter and can rotate circumferentially.

[0064] The outer wall of the sleeve 202 of the socket 2 is provided with an external thread 2021. When the socket 2 is plugged into the external indicator light plug 3, the internal thread of the locking nut 301 is threadedly connected with the external thread 2021 on the outer wall of the sleeve 202 and drives the plug body 302 to move axially so that the pin 204 is tightly plugged into the socket 307.

[0065] The inner wall of the sleeve 202 is provided with one of the guide groove 2022 and the raised guide bar 3025 extending along its axial direction, and the outer wall of the plug body 302 is provided with the other of the guide groove 2022 and the raised guide bar 3025 extending along its axial direction. The guide groove 2022 and the raised guide bar 3025 are slidably matched to ensure that when the locking nut 301 rotates, the plug body 302 can move along the axial direction to ensure the tightening effect of the pin and the socket.

[0066] In this embodiment, a plurality of guide grooves 2022 are formed on the inner wall of the sleeve 202 at intervals along its circumference, and a plurality of raised guide strips 3025 are formed on the outer wall of the plug body 302 at intervals extending outward along its circumference.

[0067] The axial limiter includes a limit block and a retaining spring 304. An annular groove 3021 is formed on the outer wall of the plug body 302 along its circumference. The limit block is sleeved on the annular groove 3021. The annular groove 3021 and the plug body 302 form an annular front limit surface 30261 and a rear limit surface 30262.

[0068] The locking nut 301 includes a threaded section 3011, an intermediate section, and a limiting section 3012. The threaded section 3011, the intermediate section, and the limiting section 3012 are arranged coaxially in sequence. The inner diameter of the intermediate section is smaller than the inner diameters of the limiting section 3012 and the threaded section 3011. An annular clamping block limiting surface 3013 is formed between the limiting section 3012 and the intermediate section. A retaining ring groove is formed on the inner wall of the retaining section 3012, and the retaining ring 304 is retained in the retaining ring groove.

[0069] The cross-section of the limit block is stepped. The limit block includes a front limit block 3031, a middle limit block 3032, and a rear limit block 3033. The front end of the middle limit block 3032 is connected to the front limit block 3031, and the rear end of the middle limit block 3032 is connected to the rear limit block 3033. The front end of the middle limit block 3032 cooperates with the block limit surface 3013, and the rear end of the middle limit block 3032 cooperates with the rear limit surface 30262 of the plug body.

[0070] The front end surface of the front limit block 3031 cooperates with the front limit surface 30261 of the plug body, and the rear end surface of the rear limit block 3033 cooperates with the retaining spring 304;

[0071] By means of the interference between the retaining spring 304 and the rear end face of the rear limit block 3033, the interference between the middle limit block 3032 and the block limit surface 3013, the interference between the middle limit block 3032 and the rear limit surface 30262 of the annular groove, and the interference between the front limit block 3031 and the front limit surface 30261 of the annular groove, the locking nut 301 and the plug body 302 can rotate relative to each other in the circumferential direction but be limited in the axial direction.

[0072] The overall height of the front limit block 3031 and the middle limit block 3032 is smaller than the height of the annular groove 3021 so as to provide an axial adjustment gap for easy insertion and removal.

[0073] The limiting block includes two semicircular blocks 303, which are docked and clamped in the annular groove 3021, making installation and disassembly convenient.

[0074] The plug body 302 includes a plug-in section, an intermediate limiting section, an axial limiting section and a lamp bead installation section. The plug-in section, the intermediate limiting section, the axial limiting section and the lamp bead installation section are coaxially connected in sequence. When the socket 2 is plugged into the external indicator light plug 3, the sleeve 202 of the socket 2 is inserted between the plug-in section and the threaded section 3011 of the locking nut 301. The outer diameter of the intermediate limiting section is matched with the inner diameter of the intermediate section of the locking nut. The axial limiting section forms a circumferential annular groove 3021. The lamp bead installation section is used to install the luminous lamp bead 306. The setting of the intermediate limiting section of the plug body ensures the stability of the matching between the locking nut 301 and the plug body 302.

[0075] In this embodiment, a transparent light guide column 305 is fixed inside the lamp bead installation section, and the transparent light guide column 305 is sleeved on the outside of the luminous lamp bead 306. The transparent light guide column 305 partially exposes the lamp bead installation section to allow the light of the luminous lamp bead 306 to penetrate the outside of the plug body 302. The operator can judge the current status of the submarine sensing node by the luminous state of the transparent light guide column 305, and take corresponding solutions in time according to the prompts.

[0076] In this embodiment, the inner diameter of the locking nut threaded section 3011 is set to be larger than the inner diameter of the middle section, so that the distance between the locking nut threaded section 3011 and the plug section of the plug body 302 is sufficient to allow the socket sleeve 202 to be inserted.

[0077] In this embodiment, the axial limit member adopts the cooperation of the limit block and the retaining spring, but is not limited to this. Other structures can also be used to achieve axial limitation of the locking nut and the plug body without affecting the circumferential rotation. The axial limit member includes a limit block, and the locking nut 301 includes a threaded section 3011 and a limit section 3012. One of the outer wall of the plug body 302 and the inner wall of the locking nut limit section 3012 is provided with an annular groove along its circumference, and the other one of the outer wall of the plug body 302 and the inner wall of the locking nut limit section 3012 is connected to the limit block, and the limit block is engaged with the annular groove; so as to achieve relative circumferential rotation of the locking nut and the plug body but axial limitation.

[0078] In this embodiment, a jack skeleton plate 3022 is fixed inside the plug body 302. The jack skeleton plate 3022 is made of hard PC material through hot injection molding, and multiple jacks are injection-molded into one piece with the jack skeleton plate at a specific interval; this ensures that the jacks 307 can be fixed at a specific interval without tilting or displacement relative to each other, and further ensures that there will be no deformation, dislocation, bending, and other problems when plugged into the socket, thereby ensuring reliable circuit connection and sealing effect.

[0079] In this embodiment, a multi-hole wiring plate 3023 is fixed inside the plug body 302 , and the jack 307 is electrically connected to the pins of the light-emitting lamp bead through the wiring on the multi-hole wiring plate 3023 .

[0080] like Figure 9As shown, the light-emitting lamp adopts a two-pin light-emitting diode. The socket 1 3071 in the plug body 302 is connected to the output pin 1 of the control chip of the internal circuit of the submarine sensing node through a pin and draws power, and is electrically connected to the positive pole of the light-emitting lamp 306 through a series diode and a voltage-dropping resistor in turn. The negative pole of the light-emitting lamp 306 is electrically connected to the socket 3 3073, and the socket 3 3073 is connected to the output pin 3 of the control chip of the internal circuit of the submarine sensing node through a pin, forming a complete loop; the status of the submarine sensing node is fed back through the on and off status of the light-emitting lamp 306, and the light-emitting lamp 306 is powered by the internal power supply of the submarine sensing node, which reduces the need to add an external power supply or battery replacement to the external indicator light plug.

[0081] like Figure 10 As shown, the light-emitting lamp bead 306 adopts a three-pin light-emitting diode. The socket 1 3071 in the plug body 302 is connected to the output pin 1 of the control chip of the internal circuit of the submarine sensing node through a pin and takes power. The socket 1 3071 is connected to one of the positive pins of the light-emitting lamp bead 306 through a series diode and a voltage drop resistor. The socket 2 3072 is connected to the output pin 2 of the control chip of the internal circuit of the submarine sensing node through a pin and takes power. The socket 2 3072 is connected to the output pin 30 of the control chip of the internal circuit of the submarine sensing node through a pin and takes power. 6 is connected to the other positive pin, the negative pin of the light-emitting lamp is connected to the jack three 3073, and the jack three 3073 is grounded to form a complete loop; the chip pin connected to the jack one 3071 drives the light-emitting lamp 306 to emit red light according to the normally closed high level or flashing high level output by the internal power detection module of the submarine sensing node. When the power is between 40% and 100%, the light-emitting lamp 306 is on, when the power is between 10% and 40%, the light-emitting lamp 306 flashes, and when the power is less than 10%, the light-emitting lamp 306 is in an off state;

[0082] The chip pin connected to the second jack 3072 drives the light-emitting bead 306 to emit green light according to the normally closed high level or flashing high level output by the internal storage capacity detection module of the submarine sensing node. When the storage capacity is between 50% and 100%, the light-emitting bead 306 is in an off state; when the storage capacity is between 20% and 50%, the light-emitting bead 306 is in a flashing state; when the storage capacity is less than 20%, the light-emitting bead 306 is in a constantly on state;

[0083] The status of the submarine sensing node is fed back through the color changes, on and off, and flashing of the luminous lamp beads. At the same time, the luminous lamp beads are powered by the internal power supply of the submarine sensing node, which reduces the need to add an external power supply or battery replacement to the external indicator light plug.

[0084] The number of pins and the luminous color of the light-emitting lamp beads are not limited to this and can be set according to actual use needs.

[0085] When using this utility model:

[0086] Find the position of the pin 204 of the socket 2 and the inner hole 3024 of the corresponding external indicator light plug 3, align the position of the raised guide bar 3025 with the position of the guide groove 2022, rotate the locking nut 301, and the locking nut 301 is threadedly connected to the sleeve 202. During the rotation of the locking nut 301, the plug body 302 is driven to move axially along the guide groove 2022, and the pin 204 is inserted into the socket 307 through the cylindrical hole 30241. The cylindrical protrusion 203 outside the pin 204 is inserted into the cylindrical hole 30241 and squeezes the annular protrusion 30242 on the cylindrical hole 30241. The pin 204 contacts the socket 307 and forms a complete circuit with the luminous lamp bead 306. The current status of the submarine sensing node is judged by the on and off and flashing of the luminous lamp bead 306.

[0087] Example 2:

[0088] The difference between Example 2 and Example 1 is that the socket is provided with a jack, and the external indicator light plug is provided with a pin. Specifically, the external indicator light plug 3 includes a plug body, a pin, and a cylindrical protrusion. The pin is inserted axially into the plug body and is electrically connected to the pin of the light-emitting lamp bead. A through hole is formed in the middle of the cylindrical protrusion for the pin to pass through. The cylindrical protrusion is sleeved outside the pin and connected to the plug body.

[0089] The socket 2 includes a socket body, an inner hole is formed in the axial direction of the socket body, a plug hole is provided in the inner hole, a cylindrical hole groove is provided at one end of the inner hole close to the external indicator light plug, and an annular protrusion is extended inwardly on the inner wall of the cylindrical hole groove;

[0090] When the socket 2 is plugged into the external indicator light plug 3, the pin is inserted into the socket, and the cylindrical protrusion is inserted into the cylindrical hole groove and squeezes the annular protrusion; the socket and the external indicator light plug are sealed, with a simple structure and good sealing effect.

Claims

1. A plug and socket connector for a submarine sensing node, characterized by: A socket and an external indicator light plug are provided, the socket is connected to the node outer shell, the socket is provided with one of a pin and a jack, the external indicator light plug is provided with the other of a pin and a jack, the socket and the external indicator light plug are plugged together via the pin and the jack; The pin or socket of the external indicator light plug is connected to the pin of the light-emitting lamp bead.

2. The plug and socket connector for a submarine sensing node according to claim 1, characterized in that: The socket comprises a socket body, a pin and a cylindrical protrusion. The pin is inserted into the socket body along the axial direction. A through hole for the pin to pass through is opened in the middle of the cylindrical protrusion. The cylindrical protrusion is sleeved outside the pin and connected to the socket body. The external indicator light plug includes a plug body, an inner hole arranged along the axial direction is formed on the plug body, a socket is inserted into the inner hole, a cylindrical hole groove is provided at one end of the inner hole close to the socket and matches the cylindrical protrusion, and an annular protrusion is extended inwardly on the inner wall of the cylindrical hole groove; When the socket is plugged into the external indicator light plug, the pin is inserted into the socket, and the cylindrical protrusion is inserted into the cylindrical hole groove and squeezes the annular protrusion; The annular protrusion is made of soft polyurethane material, and the columnar protrusion is made of hard PC material.

3. The plug and socket connector for a submarine sensing node according to claim 1, characterized in that: The external indicator light plug includes a plug body, a pin and a cylindrical protrusion. The pin is inserted axially into the plug body, and a through hole for the pin to pass through is opened in the middle of the cylindrical protrusion. The cylindrical protrusion is sleeved outside the pin and connected to the plug body. The socket includes a socket body, an inner hole is formed in the axial direction of the socket body, a socket is provided in the inner hole, a cylindrical hole groove is provided at one end of the inner hole close to the external indicator light plug, and an annular protrusion is extended inwardly on the inner wall of the cylindrical hole groove; When the socket is plugged into the external indicator light plug, the pin is inserted into the socket, and the cylindrical protrusion is inserted into the cylindrical hole groove and squeezes the annular protrusion; The annular protrusion is made of soft polyurethane material, and the columnar protrusion is made of hard PC material.

4. A plug and socket connector for a submarine sensing node according to claim 2 or 3, characterized in that: The cylindrical protrusion includes a cylindrical section and a guide section, the cylindrical section and the guide section are coaxially arranged and connected, and the guide section is close to the plug-in end of the pin.

5. A plug and socket connector for a submarine sensing node according to claim 2 or 3, characterized in that: The external indicator light plug further includes a locking nut and an axial limiter. The locking nut is sleeved outside the plug body and is axially limited by the axial limiter and can rotate circumferentially. The outer wall of the socket body is provided with an external thread. When the socket is plugged into the external indicator light plug, the internal thread of the locking nut is threadedly connected with the external thread of the outer wall of the socket body and drives the plug body to move axially so that the pin and the jack are tightly plugged.

6. The plug and socket connector for a submarine sensing node according to claim 5, characterized in that: The socket body is provided with one of a guide groove and a protruding guide bar extending along its axial direction, and the plug body is provided with the other of a guide groove and a protruding guide bar extending along its axial direction. The guide groove and the protruding guide bar are slidably matched.

7. The plug and socket connector for a submarine sensing node according to claim 5, characterized in that: The axial limiter includes a limit block and a retaining spring. The outer wall of the plug body is provided with an annular groove along its circumference. The limit block is sleeved on the annular groove. The annular groove and the plug body form an annular front limit surface and a rear limit surface. The locking nut includes a threaded section and a limiting section. The inner diameter of the limiting section is larger than the inner diameter of the threaded section. An annular clamping block limiting surface is formed between the limiting section and the threaded section. A retaining ring groove is formed on the inner wall of the retaining section. The retaining ring is clamped in the retaining ring groove. The cross-sectional shape of the limit card block is a step-shaped, and the limit card block includes a front limit block, a middle limit block and a rear limit block. The front end side of the middle limit block is connected to the front limit block, the other side of the rear end of the middle limit block is connected to the rear limit block, the other side of the front end of the middle limit block is matched with the card block limit surface, and the rear end side of the middle limit block is matched with the rear limit surface of the plug body; The front end surface of the front limit block cooperates with the front limit surface of the plug body, and the rear end surface of the rear limit block cooperates with the clamping spring; The overall height of the front limit block and the middle limit block is less than the height of the annular groove; The limiting clamping block includes two semicircular clamping blocks, which are butt-jointed and clamped in the annular groove.

8. The plug and socket connector for a submarine sensing node according to claim 7, characterized in that: The locking nut is further provided with a coaxially arranged middle section between the threaded section and the limiting section, the inner diameter of the middle section is smaller than the inner diameter of the limiting section, and an annular clamping block limiting surface is formed between the middle section and the limiting section; The plug body includes an insertion section, an intermediate limiting section, an axial limiting section and a lamp bead installation section. The insertion section, the intermediate limiting section, the axial limiting section and the lamp bead installation section are coaxially connected in sequence. The outer diameter of the intermediate limiting section matches the inner diameter of the intermediate section of the locking nut, and the axial limiting section forms a ring groove in the circumference.

9. The plug and socket connector for a submarine sensing node according to claim 5, characterized in that: The axial limit member includes a limit block, the locking nut includes a threaded section and a limit section, one of the outer wall of the plug body and the inner wall of the locking nut limit section is provided with an annular groove along its circumference, and the other of the outer wall of the plug body and the inner wall of the locking nut limit section is connected to the limit block, and the limit block is engaged with the annular groove.

10. A plug and socket connector for a submarine sensing node according to claim 1, 2, 3, 6, 7, 8, or 9, characterized in that: The light-emitting lamp bead is a three-pin lamp bead, one positive pin of the light-emitting lamp bead is electrically connected to the first socket or the first pin of the external indicator light plug, the other positive pin of the light-emitting lamp bead is electrically connected to the second socket or the second pin of the external indicator light plug, and the negative pin of the light-emitting lamp bead is electrically connected to the third socket or the third pin of the external indicator light plug.

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