Coaxial contact element and multi-core waterproof sealing electric connector

Abstract

The invention belongs to the technical field of electric connectors, and particularly relates to a coaxial contact element which comprises a coaxial pin contact element and a coaxial jack contact element with a plugging end floating axially. The coaxial jack contact comprises a third outer conductor, a second outer conductor which axially floats relative to the third outer conductor, and a spring which is arranged between the second outer conductor and the third outer conductor and drives the second outer conductor to reset. When a coaxial contact element, a coaxial pin contact element and a coaxial jack contact element are plugged, a first outer conductor extrudes a second outer conductor to move towards a third outer conductor until a first jack center conductor, a pin center conductor and a second jack center conductor are in contact in sequence; floating contact of the coaxial contact element is realized, stable electrical connection and signal integrity are ensured, and the positions of cables at the tail ends of the pin center conductor and the jack center conductor II in the connector are not changed, so that when the coaxial contact element is used for an underwater multi-core electric connector, the waterproof sealing performance of the connector is required to be met, and the waterproof performance of the connector is improved. And the cable position is not changed.

Description

Technical Field

[0001] This invention belongs to the field of electrical connector technology, and particularly relates to coaxial contacts and multi-core waterproof and sealed electrical connectors using coaxial contacts. Background Technology

[0002] The main components of an electrical connector are the connector body and coaxial contacts. This type of electrical connector is mainly composed of coaxial contacts installed in the connector body. To ensure the stability and reliability of electrical performance, the coaxial contacts are generally floating contacts. The floating contacts are designed to allow the contacts to move freely within a certain range through a built-in elastic mechanism, thereby achieving the requirements of maintaining a stable electrical connection and signal integrity.

[0003] In contrast, with commonly used floating contacts on the market, the cable at the tail of the contact moves axially with the contact during mating. When the contact is used in underwater multi-core electrical connectors, both the plug and socket of this type of connector require waterproof sealing at their tails. Therefore, the cable attached to the tail of the connector must be clamped and fixed. This means that the cable cannot move with the contact during the connector mating process. As a result, commonly used floating contacts on the market cannot meet the requirements of this type of connector.

[0004] To address the aforementioned issues, a coaxial contact element and a multi-core waterproof sealed electrical connector using this coaxial contact element are designed. Summary of the Invention

[0005] To address the problems in the prior art, the present invention proposes the following technical solution: On the one hand, a coaxial contact is provided, including a coaxial pin contact and a coaxial socket contact with an axially floating plug end. The coaxial pin contact includes an outer conductor, a socket center conductor disposed inside the outer conductor, and a medium disposed between the socket center conductor and the outer conductor. The coaxial socket contact includes an outer conductor three, an outer conductor two that floats axially relative to the outer conductor three, and a spring disposed between the outer conductor two and the outer conductor three and driving the outer conductor two to return to its original position. The outer conductor three has a socket center conductor two inside, and the outer conductor two has a pin center conductor inside. The pin center conductor is coaxially disposed with the socket center conductor two. There is a gap A between the insertion front end of the pin center conductor and the outer conductor two. A medium two is disposed between the middle part of the pin center conductor and the outer conductor two. When the coaxial pin contact and the coaxial socket contact are engaged, the outer conductor one is inserted into the gap A, and the outer conductor two is squeezed and moved in the direction of the outer conductor three until the socket center conductor one, the pin center conductor and the socket center conductor two come into contact in sequence.

[0006] As a preferred embodiment of the above technical solution, the insertion end of the first jack center conductor has a jack A and a first cable connected to the tail end; the insertion front end of the pin center conductor has a plug A and a plug B; the insertion end of the second jack center conductor has a jack B and a second cable connected to the tail end; the plug A is matched with the jack A, and the plug B is matched with the jack B.

[0007] As a preferred embodiment of the above technical solution, in the coaxial socket contact, the plug B matches the socket B, and the center conductor of the pin and the center conductor of the socket always remain in contact.

[0008] As a preferred embodiment of the above technical solution, the center conductor of the insert is fitted with a contact head, one end of the contact head has a gap B between it and the outer conductor two, and the other end extends axially and is inserted between the medium two and the outer conductor two. One end of the outer conductor three is inserted into the gap B and slides therewith. A section of the outer conductor three located outside the gap B extends radially to form a limiting disk one. The spring is sleeved on the outer conductor three, and the two ends of the spring are respectively connected to the outer conductor two and the limiting disk one.

[0009] On the other hand, a multi-core waterproof sealed electrical connector is provided, including a pluggable plug and a socket. The plug includes a housing, and the housing has a mating cavity, an assembly cavity, and a through hole connecting the mating cavity and the assembly cavity. There are multiple through holes, and a coaxial pin contact as described above is assembled in the through hole. The socket includes a second outer shell, inside which are provided a second docking cavity, a second assembly cavity, and a positioning cavity connecting the second docking cavity and the second assembly cavity. Inside the positioning cavity is a central base, and in the central base are provided a plurality of through holes axially extending through each other. In the through holes are assembled coaxial insertion contact components as described above.

[0010] As a preferred embodiment of the above technical solution, the through hole is configured as a step, and a limiting step is provided on the outer conductor of the coaxial pin contact. The limiting step cooperates with the through hole to limit the insertion end of the coaxial pin contact. The tail end of the outer shell is provided with a plurality of teeth. The assembly cavity is equipped with a contact member pressure ring. One end of the contact member pressure ring abuts against the coaxial pin contact member, and the other end of the contact member pressure ring abuts against the inwardly flipped teeth to limit the tail end of the coaxial pin contact member. The contact element pressure ring is equipped with a rubber sleeve and a rubber sleeve pressure ring at its tail. The outer ring of the outer shell is threaded with a clamping nut. The contact element pressure ring, the rubber sleeve, the rubber sleeve pressure ring, and the clamping nut are all provided with an assembly hole for the cable to pass through. The clamping nut squeezes the rubber sleeve through the rubber sleeve pressure ring, and the rubber sleeve deforms to fill the gap between the contact element pressure ring and the cable.

[0011] As a preferred embodiment of the above technical solution, the positioning cavity is stepped, and a second limiting step is provided on the outside of the middle substrate. The second limiting step cooperates with the positioning cavity to limit the insertion end of the middle substrate. The tail end of the outer shell is provided with a plurality of teeth. The assembly cavity is equipped with a contact ring. One end of the contact ring abuts against the central base and the coaxial insertion hole contact. The other end of the contact ring abuts against the inwardly flipped teeth, limiting the tail end of the central base and the coaxial insertion hole contact. The tail of the second contact ring is equipped with a second rubber sleeve and a second rubber sleeve pressure ring. The outer ring of the tail end of the second outer shell is threaded with a second clamping nut. The second contact ring, the second rubber sleeve, the second rubber sleeve pressure ring, and the second clamping nut are all provided with assembly holes for the second cable to pass through. The second clamping nut squeezes the second rubber sleeve through the second rubber sleeve pressure ring, and the second rubber sleeve deforms to fill the gap between the second contact ring and the second cable.

[0012] As a preferred embodiment of the above technical solution, an O-ring is provided between the contact pressure ring and the assembly cavity, and a groove for accommodating the O-ring is provided on the side wall of the assembly cavity. An O-ring is provided between the second contact ring and the second assembly cavity, and a groove for accommodating the second O-ring is provided on the side wall of the second assembly cavity.

[0013] As a preferred embodiment of the above technical solution, an O-ring seal three is fitted on the inner wall of the second docking cavity. When the plug and socket are inserted, the O-ring seal three fills the gap between the second outer shell and the first outer shell. The outer wall of the first outer shell extends radially outward to form a limiting disc two. A sealing gasket one is mounted on the limiting disc two. A sealing gasket two is provided in the docking cavity two. When the plug and socket are inserted, the first outer shell squeezes the sealing gasket two, and the second outer shell squeezes the sealing gasket one.

[0014] As a preferred embodiment of the above technical solution, the outer shell is rotatably fitted with a connecting sleeve, the inner wall of the connecting sleeve is provided with a snap groove, and the outer shell is provided with a snap that matches the snap groove. The outer middle of the second outer shell extends radially outward to form a flange.

[0015] The beneficial effects of this invention are as follows: 1. In this application, when the coaxial contact, coaxial pin contact, and coaxial socket contact are engaged, the outer conductor one is inserted into gap A, and the outer conductor two is squeezed and moved in the direction of the outer conductor three until the socket center conductor one, the pin center conductor, and the socket center conductor two make contact in sequence. This achieves floating contact of the coaxial contact, ensures stable electrical connection and signal integrity, and at the same time, the cable at the tail end of the pin center conductor and the socket center conductor two does not change its position inside the connector. This meets the requirement that the coaxial contact is used in underwater multi-core electrical connectors to meet the waterproof sealing of the connector and the requirement that the cable position remains unchanged.

[0016] 2. The multi-core waterproof sealed electrical connector in this application features a coaxial pin contact and a coaxial socket contact that automatically adjust and align radially during connector mating, ensuring tight contact between their reference surfaces in the axial direction. This achieves reliable mating of the coaxial contacts and stable transmission of radio frequency signals. The radial clearance between the coaxial socket contact and the outer shell solves the radial tolerance problem during mating and after mating, while the spring compression in the coaxial socket contact solves the axial tolerance problem. Furthermore, the characteristic impedance of each transmission segment and the compensation size of each impedance compensation segment remain unchanged during mating and in the final state, ensuring consistent transmission performance.

[0017] 3. The multi-core waterproof sealed electrical connector in this application achieves waterproof sealing through the following three aspects, making it suitable for use in environments requiring water sealing performance: Inside the plug, the rubber sleeve 1 is squeezed and deformed to fill the gap between the contact ring 1 and the cable 1, achieving a waterproof seal between the contact ring 1, the rubber sleeve 1, and the cable 1; inside the socket, the rubber sleeve 2 is squeezed and deformed to fill the gap between the contact ring 2 and the cable 2, achieving a waterproof seal between the contact ring 2, the rubber sleeve 2, and the cable 2. O-ring one fills the gap between contact ring one and outer shell one, achieving a waterproof seal between contact ring one and outer shell one; O-ring two fills the gap between contact ring two and outer shell two, achieving a waterproof seal between contact ring two and outer shell two. When the plug and socket are inserted, the O-ring seal 3 fills the gap between the outer shell 2 and the outer shell 1. The outer shell 1 squeezes the sealing gasket 2, and the outer shell 2 squeezes the sealing gasket 1. The sealing gaskets 2 and 1 become radially larger, thus achieving a waterproof seal between the outer shell 1 and the outer shell 2. Attached Figure Description

[0018] Figure 1 The diagram shown is a structural schematic of a coaxial pin contact of a coaxial contact in Embodiment 1; Figure 2The diagram shown is a structural schematic of a coaxial contact and coaxial socket contact in Embodiment 1. Figure 3 The diagram shown is a structural schematic of the plug of the multi-core waterproof sealed electrical connector in Embodiment 1; Figure 4 The diagram shown is a structural schematic of the socket of the multi-core waterproof sealed electrical connector in Embodiment 1; Figure 5 The diagram shown is a structural schematic of the outer casing in Embodiment 1; Figure 6 The diagram shown is a structural schematic of the outer shell 2 in Embodiment 1; Figure 7 The diagram shown is a structural schematic of the contact element pressure ring in Embodiment 1; Figure 8 The diagram shown is a structural schematic of the plug rubber sleeve pressure ring in Embodiment 1; Figure 9 The diagram shown is a structural schematic of the socket rubber sleeve pressure ring in Embodiment 1; Figure 10 The diagram shown is a schematic of the structure of an electrical connector in the prior art that uses an elastic sealing body to achieve sealing, as described in Embodiment 1.

[0019] Reference numerals: coaxial pin contact 110; socket center conductor 111; socket A1111; dielectric 112; outer conductor 113; Coaxial socket contact 210; pin center conductor 211; plug A 2111; plug B 2112; medium two 212; contact head 213; outer conductor two 214; gap A 2141; gap B 2142; socket center conductor two 215; socket B 2151; spring 216; outer conductor three 217; limit plate one 2171; Plug 100; Housing 120; Mating cavity 121; Assembly cavity 122; Through hole 123; Limiting disc 124; Guide key 125; Tooth 126; Contact ring 130; Rubber sleeve 140; Rubber sleeve ring 150; O-ring 160; Compression nut 170; Sealing gasket 180; Connecting sleeve 190; Clip groove 191; Socket 200; Outer shell 220; Connecting cavity 221; Assembly cavity 222; Positioning cavity 223; Flange 224; Clip 225; Guide groove 226; Gear 227; Contact ring 230; Rubber sleeve 240; Rubber sleeve ring 250; Compression nut 260; O-ring 270; O-ring 3 280; Sealing gasket 290. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] Example 1 like Figure 1 , Figure 2 As shown, a coaxial contact includes a coaxial pin contact 110 and a coaxial socket contact 210 with an axially floating insertion end. The coaxial pin contact 110 includes an outer conductor 113, a socket center conductor 111 disposed inside the outer conductor 113, and a medium 112 disposed between the socket center conductor 111 and the outer conductor 113. The coaxial socket contact 210 includes an outer conductor three 217, an outer conductor two 214 that floats axially relative to the outer conductor three 217, and a spring 216 disposed between the outer conductor two 214 and the outer conductor three 217 and driving the outer conductor two 214 to return to its original position. The outer conductor three 217 has a socket center conductor two 215 disposed inside, and the outer conductor two 214 has a pin center conductor 211 disposed inside. The pin center conductor 211 and the socket center conductor two 215 are coaxially disposed. There is a gap A2141 between the insertion front end of the pin center conductor 211 and the outer conductor two 214. A medium two 212 is disposed between the middle part of the pin center conductor 211 and the outer conductor two 214. In this technical solution, the coaxial contact is configured such that the coaxial socket contact 210 is a fixed rear part (a combination of socket center conductor 215 and outer conductor 3 217) and a front part that can float axially relative to the rear part (a combination of pin center conductor 211, medium 212 and outer conductor 214). This drives the front return spring 216. When the coaxial pin contact 110 and the coaxial socket contact 210 are inserted, the outer conductor 113 is inserted into the gap A2141, and the outer conductor 214 is squeezed to move towards the outer conductor 3 217, until the socket center conductor 111, the pin center conductor 211 and the socket center conductor 215 make contact in sequence.

[0022] In this application, when the coaxial contact 110 and the coaxial socket contact 210 are engaged, the outer conductor 113 is inserted into the gap A2141, and the outer conductor 214 is squeezed and moved towards the outer conductor 327 until the socket center conductor 111, the pin center conductor 211 and the socket center conductor 215 make contact in sequence. This achieves floating contact of the coaxial contact, ensuring stable electrical connection and signal integrity. At the same time, the cable at the tail end of the pin center conductor 211 and the socket center conductor 215 does not change its position inside the connector. This meets the requirement that the coaxial contact is used in underwater multi-core electrical connectors to meet the waterproof sealing of the connector and the requirement that the cable position remains unchanged.

[0023] To achieve stable contact between the center conductor 111 of the jack, the center conductor 211 of the pin, and the center conductor 215 of the jack, and to ensure stable signal transmission, such as Figure 1 , Figure 2 As shown, the insertion end of the first socket conductor 111 has a socket A1111 and a first cable connected to the tail end. The insertion front end of the pin center conductor 211 has a plug A2111 and a plug B2112. The insertion end of the second socket conductor 215 has a socket B2151 and a second cable connected to the tail end. Plug A2111 is matched with socket A1111, and plug B2112 is matched with socket B2151. When the coaxial pin contact 110 and the coaxial socket contact 210 are engaged, plug A2111 engages with socket A1111, and plug B2112 engages with socket B2151, ensuring stable contact between the first socket conductor 111, the pin center conductor 211, and the second socket conductor 215.

[0024] like Figure 1 , Figure 2 As shown, in the coaxial socket contact 210, the plug B2112 matches the socket B2151, and the center conductor 211 of the pin and the center conductor 215 of the socket always remain in contact; that is, when the coaxial pin contact 110 and the coaxial socket contact 210 are not engaged, the center conductor 211 of the pin and the center conductor 215 of the socket are still in contact and conducting. During the engagement operation, the center conductor 211 of the pin moves synchronously to ensure that the center conductor 211 of the pin and the center conductor 215 of the socket are in stable contact inside the coaxial socket contact 210, thus ensuring the stable transmission of signals inside the coaxial socket contact 210.

[0025] To achieve the setting of axially stable axial movement and reset of the front part of the coaxial socket contact 210 relative to the rear part, such as Figure 1 , Figure 2 As shown, the center conductor 211 of the insert is fitted with a contact head 213. One end of the contact head 213 has a gap B2142 between it and the outer conductor 214, and the other end extends axially and is inserted between the medium 212 and the outer conductor 214, so as to achieve stable assembly of the contact head 213. One end of the outer conductor 217 is inserted into the gap B2142 and slides therein to ensure the stability of the position of the outer conductor 214 during axial movement. A section of the outer conductor 217 located outside the gap B2142 extends radially to form a limiting disk 2171. A spring 216 is sleeved on the outer conductor 217, and both ends of the spring 216 are connected to the outer conductor 214 and the limiting disk 2171, respectively. When the outer conductor 214 moves axially toward the outer conductor 217, the spring 216 is compressed by force. When the outer conductor 214 is not squeezed by the outer conductor 113, the outer conductor 214 returns to its original position under the action of the spring 216.

[0026] In existing electrical connectors, a flexible sealing body is used to achieve sealing through radial interference fit, such as... Figure 10 As shown, the sealing structure can only accommodate moisture and a small amount of condensate ingress, which is insufficient to meet the sealing requirements for underwater electrical connectors. To address these issues, this application is further optimized, as follows: Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, this application proposes a multi-core waterproof sealed electrical connector. The electrical connector in this application integrates the transmission of radio frequency signals or integrates the transmission of multiple forms of optoelectronic signals such as radio frequency and low frequency, and is used in environments with water-sealing performance requirements.

[0027] The plug includes a pluggable plug 100 and a socket 200. The plug 100 includes a housing 120 with a guide key 125 on its outer wall. Inside the housing 120 are a mating cavity 121, an assembly cavity 122, and multiple through holes 123 connecting the mating cavity 121 and the assembly cavity 122. Coaxial pin contacts 110 are fitted into each through hole 123, and the outer surface of the coaxial pin contacts 110 has a chamfered edge. The socket 200... 00 includes a second outer shell 220. The inner end of the second outer shell 220 is chamfered. The inner wall of the second outer shell 220 is provided with axially distributed guide grooves 226. The second outer shell 220 is provided with a second docking cavity 221, a second assembly cavity 222, and a positioning cavity 223 connecting the second docking cavity 221 and the second assembly cavity 222. The positioning cavity 223 is equipped with a central base. The central base is provided with a number of through holes 2 that are axially connected. The through holes 2 are equipped with coaxial insertion contact parts 210.

[0028] The multi-core waterproof sealed electrical connector in this application, during the mating operation of the plug 100 and socket 200, achieves primary guidance for contact mating through the sliding engagement of the guide key 125 on the outer wall of the first housing 120 and the guide groove 226 on the inner wall of the second housing 220. The chamfering of the plug end of the second housing 220 and the chamfering of the coaxial pin contact 110 guides the coaxial contact's outer conductor 113 and outer conductor 214. Furthermore, the guidance of the outer conductors 113 and 214 ensures that the center conductor 111 of the socket and the center conductor 211 of the pin are aligned and properly mated. This allows the coaxial pin contact 110 and the coaxial socket contact 210 to automatically adjust and align radially during connector mating, and then mat. In the axial direction, their reference surfaces are ultimately in close contact, ultimately achieving reliable mating of the coaxial contacts and stable transmission of radio frequency signals.

[0029] The multi-core waterproof sealed electrical connector of this application solves the radial and axial tolerance problems of coaxial contacts during connector mating. Specifically, the radial gap between the coaxial socket contact 210 and the housing 220 solves the radial tolerance problem during mating and after mating, and the spring compression in the coaxial socket contact 210 solves the axial tolerance problem. In this application, the characteristic impedance of each transmission segment and the compensation size of each impedance compensation segment remain unchanged during mating and in the final state, which can ensure that the transmission performance remains unchanged.

[0030] The multi-core waterproof sealed electrical connector in this application has a coaxial pin contact 110 in the plug 100 and a coaxial socket contact 210 in the socket 200. While achieving floating contact of the coaxial contact and ensuring stable electrical connection and signal integrity, the cable at the end of the pin center conductor 211 and the socket center conductor 215 does not change its position inside the connector, thus meeting the waterproof sealing requirements of the multi-core waterproof sealed electrical connector.

[0031] To achieve stable assembly of the coaxial pin contact 110 inside the plug 100, as shown in the example... Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, the through hole 123 is stepped, and the outer conductor 113 of the coaxial pin contact 110 is provided with a limiting step. The limiting step cooperates with the through hole 123 to limit the insertion end of the coaxial pin contact 110. The tail end of the outer shell 120 is provided with a number of teeth 126. The assembly cavity 122 is equipped with a contact ring 130. One end of the contact ring 130 abuts against the coaxial pin contact 110, and the other end of the contact ring 130 abuts against the inwardly flipped teeth 126 to limit the tail end of the coaxial pin contact 110.

[0032] To achieve stable assembly of the coaxial socket contact 210 inside the socket 200, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the positioning cavity 223 is stepped, and a limiting step 2 is provided on the outside of the middle base. The limiting step 2 cooperates with the positioning cavity 223 to limit the insertion end of the middle base. The tail end of the outer shell 220 is provided with a number of teeth 227. The assembly cavity 222 is equipped with a contact member pressure ring 230. One end of the contact member pressure ring 230 abuts against the middle base and the coaxial insertion hole contact member 210, and the other end of the contact member pressure ring 230 abuts against the inwardly flipped teeth 227 to limit the tail end of the middle base and the coaxial insertion hole contact member 210.

[0033] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, a rubber sleeve 140 and a rubber sleeve pressure ring 150 are assembled in the tail of the contact ring 130. A clamping nut 170 is threaded on the outer ring of the tail end of the outer shell 120. The contact ring 130, the rubber sleeve 140, the rubber sleeve pressure ring 150 and the clamping nut 170 are all provided with an assembly hole for the cable to pass through. The clamping nut 170 squeezes the rubber sleeve 140 through the rubber sleeve pressure ring 150. The rubber sleeve 140 deforms and fills the gap between the contact ring 130 and the cable.

[0034] The tail of the contact ring 230 is fitted with a rubber sleeve 240 and a rubber sleeve pressure ring 250. The outer ring of the outer shell 220 is threaded with a clamping nut 260. The contact ring 230, rubber sleeve 240, rubber sleeve pressure ring 250 and clamping nut 260 are all provided with assembly holes for the cable 2 to pass through. The clamping nut 260 squeezes the rubber sleeve 240 through the rubber sleeve pressure ring 250. The rubber sleeve 240 deforms and fills the gap between the contact ring 230 and the cable 2.

[0035] The multi-core waterproof sealed electrical connector in this application achieves stable assembly of the coaxial pin contact 110 and the coaxial socket contact 210. Inside the plug 100, the rubber sleeve 140 is compressed and deformed to fill the gap between the contact ring 130 and the cable, thus achieving a waterproof seal between the contact ring 130, the rubber sleeve 140, and the cable. Inside the socket 200, the rubber sleeve 240 is compressed and deformed to fill the gap between the contact ring 230 and the cable, thus achieving a waterproof seal between the contact ring 230, the rubber sleeve 240, and the cable.

[0036] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, an O-ring 160 is provided between the contact pressure ring 130 and the assembly cavity 122, and a groove is provided on the side wall of the assembly cavity 122 to accommodate the O-ring 160; an O-ring 270 is provided between the contact pressure ring 230 and the assembly cavity 222, and a groove is provided on the side wall of the assembly cavity 222 to accommodate the O-ring 270.

[0037] O-ring 160 fills the gap between contact ring 130 and outer shell 120, achieving a waterproof seal between them; O-ring 270 fills the gap between contact ring 230 and outer shell 220, achieving a waterproof seal between them.

[0038] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, an O-ring 280 is installed on the inner wall of the second docking cavity 221. The outer wall of the first outer shell 120 extends radially outward to form a limiting disk 124. A sealing gasket 180 is installed on the limiting disk 124. A sealing gasket 290 is provided in the second docking cavity 221.

[0039] When plug 100 and socket 200 are inserted, O-ring 280 fills the gap between outer shell 220 and outer shell 120. Outer shell 120 squeezes sealing gasket 290, and outer shell 220 squeezes sealing gasket 180. Sealing gasket 290 and sealing gasket 180 become radially larger, achieving a waterproof seal between outer shell 120 and outer shell 220.

[0040] To ensure the stability of the mating of plug 100 and socket 200, such as Figure 3 , Figure 4 As shown, a connecting sleeve 190 is rotatably fitted to the outside of the outer casing 120. A rivet groove 191 is provided on the inner wall of the connecting sleeve 190. A rivet 225 matching the rivet groove 191 is provided on the outer casing 220. A flange 224 is formed by radially extending outward from the middle of the outer side of the outer casing 220. More specifically, after the rivet 225 and the rivet groove 191 are engaged, the connecting sleeve 190 and the flange 224 abut against each other.

[0041] The multi-core waterproof sealed electrical connector in this application has a connecting sleeve 190 used to connect the plug 100 and the socket 200 together, or to separate the two. After the locking pin 225 is screwed into the final position along the locking pin groove 191, it falls into the end of the locking pin groove 191 at the corner of the groove, thereby achieving a stable connection between the connector plug 100 and the socket 200.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A coaxial contact element, characterized in that, It includes a coaxial pin contact and a coaxial socket contact with an axially floating plug end. The coaxial pin contact includes an outer conductor, a socket center conductor disposed inside the outer conductor, and a medium disposed between the socket center conductor and the outer conductor. The coaxial socket contact includes an outer conductor three, an outer conductor two that floats axially relative to the outer conductor three, and a spring disposed between the outer conductor two and the outer conductor three and driving the outer conductor two to return to its original position. The outer conductor three has a socket center conductor two inside, and the outer conductor two has a pin center conductor inside. The pin center conductor is coaxially disposed with the socket center conductor two. There is a gap A between the insertion front end of the pin center conductor and the outer conductor two. A medium two is disposed between the middle part of the pin center conductor and the outer conductor two. When the coaxial pin contact and the coaxial socket contact are engaged, the outer conductor one is inserted into the gap A, and the outer conductor two is squeezed and moved in the direction of the outer conductor three until the socket center conductor one, the pin center conductor and the socket center conductor two come into contact in sequence.

2. A coaxial contact element according to claim 1, characterized in that, The first center conductor of the socket has a socket A at its insertion end and a cable connected to its tail end. The first insertion end of the center conductor of the pin has a plug A at its insertion front end and a plug B at its insertion tail end. The second center conductor of the socket has a socket B at its insertion end and a cable connected to its tail end. The plug A is matched with the socket A, and the plug B is matched with the socket B.

3. A coaxial contact element according to claim 2, characterized in that, In the coaxial socket contact, plug B matches socket B, and the center conductor of the pin and the center conductor of the socket always remain in contact.

4. A coaxial contact element according to claim 1, characterized in that, The center conductor of the insert is fitted with a contact head, one end of which has a gap B between it and the outer conductor, and the other end extends axially and is inserted between the medium and the outer conductor. One end of the outer conductor three is inserted into the gap B and slides therewith. A section of the outer conductor three located outside the gap B extends radially to form a limiting disk one. The spring is sleeved on the outer conductor three, and the two ends of the spring are respectively connected to the outer conductor two and the limiting disk one.

5. A multi-core waterproof sealed electrical connector, characterized in that, The invention includes a pluggable plug and socket, wherein the plug includes a housing, the housing having a mating cavity, an assembly cavity, and a through hole connecting the mating cavity and the assembly cavity, and the through hole being a plurality of the through holes, wherein a coaxial pin contact as described in any one of claims 1-4 is fitted into the through hole. The socket includes a second outer shell, inside which are provided a second docking cavity, a second assembly cavity, and a positioning cavity connecting the second docking cavity and the second assembly cavity. Inside the positioning cavity is a central base, and in the central base are provided a plurality of through holes axially extending through each other. In the through holes are assembled a coaxial insertion contact element as described in any one of claims 1-4.

6. The multi-core waterproof sealed electrical connector according to claim 5, characterized in that, The through hole is stepped, and the outer conductor of the coaxial pin contact is provided with a limiting step. The limiting step cooperates with the through hole to limit the insertion end of the coaxial pin contact. The tail end of the outer shell is provided with a plurality of teeth. The assembly cavity is equipped with a contact member pressure ring. One end of the contact member pressure ring abuts against the coaxial pin contact member, and the other end of the contact member pressure ring abuts against the inwardly flipped teeth to limit the tail end of the coaxial pin contact member. The contact element pressure ring is equipped with a rubber sleeve and a rubber sleeve pressure ring at its tail. The outer ring of the outer shell is threaded with a clamping nut. The contact element pressure ring, the rubber sleeve, the rubber sleeve pressure ring, and the clamping nut are all provided with an assembly hole for the cable to pass through. The clamping nut squeezes the rubber sleeve through the rubber sleeve pressure ring, and the rubber sleeve deforms to fill the gap between the contact element pressure ring and the cable.

7. The multi-core waterproof sealed electrical connector according to claim 6, characterized in that, The positioning cavity is stepped, and a second limiting step is provided on the outside of the middle base. The second limiting step cooperates with the positioning cavity to limit the insertion end of the middle base. The tail end of the outer shell is provided with a plurality of teeth. The assembly cavity is equipped with a contact ring. One end of the contact ring abuts against the central base and the coaxial insertion hole contact. The other end of the contact ring abuts against the inwardly flipped teeth, limiting the tail end of the central base and the coaxial insertion hole contact. The tail of the second contact ring is equipped with a second rubber sleeve and a second rubber sleeve pressure ring. The outer ring of the tail end of the second outer shell is threaded with a second clamping nut. The second contact ring, the second rubber sleeve, the second rubber sleeve pressure ring, and the second clamping nut are all provided with assembly holes for the second cable to pass through. The second clamping nut squeezes the second rubber sleeve through the second rubber sleeve pressure ring, and the second rubber sleeve deforms to fill the gap between the second contact ring and the second cable.

8. The multi-core waterproof sealed electrical connector according to claim 6, characterized in that, An O-ring is provided between the contact ring and the assembly cavity, and a groove for accommodating the O-ring is provided on the side wall of the assembly cavity. An O-ring is provided between the second contact ring and the second assembly cavity, and a groove for accommodating the second O-ring is provided on the side wall of the second assembly cavity.

9. The multi-core waterproof sealed electrical connector according to claim 5, characterized in that, An O-ring three is fitted on the inner wall of the second docking cavity. When the plug and socket are inserted, the O-ring three fills the gap between the second outer shell and the first outer shell. The outer wall of the first outer shell extends radially outward to form a limiting disc two. A sealing gasket one is mounted on the limiting disc two. A sealing gasket two is provided in the docking cavity two. When the plug and socket are inserted, the first outer shell squeezes the sealing gasket two, and the second outer shell squeezes the sealing gasket one.

10. The multi-core waterproof sealed electrical connector according to claim 5, characterized in that, The outer shell is rotatably fitted with a connecting sleeve, and the inner wall of the connecting sleeve is provided with a rivet groove. The outer shell is provided with a rivet that matches the rivet groove. The outer middle of the second outer shell extends radially outward to form a flange.

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