Connector of multi-core radio frequency integrated plug and socket with airtight sealing function

Abstract

The utility model discloses a multi-core radio frequency integrated plug and socket connector with an airtight sealing function. The multi-core radio frequency integrated plug and socket connector comprises a free end connection cable plug connector and a screw installation fixing type airtight socket connector, the free end connection cable plug connector comprises a plurality of radio frequency coaxial jack contact elements, a plug shell and clamping jaws for fixing the radio frequency coaxial jack contact elements. The screw installation fixing type airtight socket connector comprises a radio frequency coaxial pin contact piece and a socket shell. An anti-misplug trapezoidal groove interface is designed on a plug shell plugging interface of the free end connection cable plug connector, and a matched trapezoidal boss interface is designed on a socket shell plugging interface of the screw installation fixing type airtight socket connector. The locking screws at the two ends of the plug connector are alternately and symmetrically screwed into the threaded holes of the airtight socket screws to complete insertion and locking. The connector has the advantages of miniaturization, light weight and low cost, meets the airtight sealing requirement in the signal transmission process, and ensures stable connection and transmission of low-frequency signals and radio-frequency signals.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a connector with a multi-core radio frequency integrated plug and socket having an air-tight sealing function. Background Art

[0002] With the demand for systematization, integration, standardization, miniaturization and lightweight of the whole machine, the simultaneous transmission and disconnection of multi-channel RF signals can be realized, which saves space and reduces costs. At the same time, with the rapid development of modern military technology and national defense industry, the characteristics of military products such as diversified demand, complex system, rapid technological changes and integrated functions are becoming increasingly prominent, requiring different functions to be combined to simplify operation, reduce external dimensions, reduce weight and improve reliability. However, the bottlenecks encountered by existing RF integrated connectors are: first, the size after integration still cannot meet the space requirements of the whole machine; second, most of the existing integrated connectors realize the transmission of RF signals and cannot be used in scenarios requiring airtight performance. Summary of the invention

[0003] In order to solve the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a connector with a multi-core RF integrated plug and socket with an air-sealing function, which is miniaturized, lightweight, low-cost, and meets the air-sealing requirements during signal transmission. It solves the problem of large size of existing mixed integrated connectors, and effectively prevents the intrusion and damage of electronic components inside the connector due to complex environments such as rain, wind, sand and humidity. The connector has good sealing protection function during signal transmission, ensuring the stable connection and transmission of low-frequency signals and RF signals.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A connector of a multi-core radio frequency integrated plug and socket with air-tight function, comprising a free-terminated cable plug connector and a screw-mounted fixed air-tight socket connector;

[0006] The free-termination cable plug connector includes a plurality of radio frequency coaxial jack contacts 1, a plug shell 2, a claw 3 for fixing the radio frequency coaxial jack contacts 1, a sealing gasket 6 with a sealing function designed at the plug-in interface of the plug shell 2, a wire protection shell 4 designed at the rear of the plug shell 2 for fixing and protecting the cable, a plug dust cover 5 is arranged on the plug-in end face, and locking screws 7, rivet sleeves 8, and spring washers 10 that are locked and connected to the screw-mounted fixed airtight socket connector are arranged on both sides of the plug shell 2, wherein the locking screws 7, the rivet sleeves 8 and the plug shell 2 are fixedly connected by a riveting process.

[0007] The RF coaxial jack contacts 1 are arranged in a single row or double row in each hole position in the middle area of ​​the plug shell 2. The RF coaxial jack contacts 1 and the plug RF coaxial cable 11 are assembled into a cable assembly by welding. The RF coaxial jack contacts 1 connected to the plug RF coaxial cable 11 are fixed in each hole position of the plug shell 2 by the claws 3.

[0008] The radio frequency coaxial jack contact 1 comprises an inner conductor jack 1-1, a front insulator 1-2 at the jack end, a rear insulator 1-3 at the jack end and an outer conductor 1-4 at the jack end. The front insulator 1-2 at the jack end is wrapped in the outer conductor 1-4 at the jack end, and the inner conductor jack 1-1 is wrapped in the front insulator 1-2 at the jack end. The interface requirements are met through the step positioning of the inner conductor jack 1-1. When the inner conductor jack 1-1 is assembled in place, the rear insulator 1-3 at the jack end is arranged on the rear end face of the inner conductor jack 1-1, and is clamped between the inner conductor jack 1-1 and the plug radio frequency coaxial cable 11, so as to ensure reliable connection of electrical performance.

[0009] The screw-mounted fixed airtight socket connector includes an RF coaxial pin contact 1a, a socket housing 2a, an O-ring 3a is arranged at the interface with the user panel, a socket dust cover 5a is arranged at the mating end face, and airtight socket screws 4a are arranged on both sides of the socket housing 2a to be locked and connected to the free-terminated cable plug connector, one end of the airtight socket screw 4a is connected and locked with the locking screw 7, and the other end is threadedly fastened with the user installation panel. The RF coaxial pin contact 1a is fixed in the side wall of the socket housing 2a cavity by soldering and epoxy resin potting process, and a circular transition structure 2a-3 is adopted at the welding termination of the socket housing 2a.

[0010] The RF coaxial pin contact 1a includes a sintered component 1a-1, a transfer jack 1a-2, a front-end insulator 1a-3, a rear-end insulator 1a-4, a welding wire barrel 1a-5, and a fixing nut 1a-6; wherein the transfer jack 1a-2 is wrapped in the front-end insulator 1a-3, the transfer jack 1a-2 and the front-end insulator 1a-3 are arranged in the sintered component 1a-1, the rear-end insulator 1a-4 is arranged on the rear end face of the transfer jack 1a-2, sandwiched between the transfer jack 1a-2 and the socket RF coaxial cable 6a, the welding wire barrel 1a-5 is arranged outside the socket RF coaxial cable 6a, and the fixing nut 1a-6 is arranged between the welding wire barrel 1a-5 and the sintered component 1a-1.

[0011] The sintered assembly 1a-1 includes an inner conductor pin contact 1a-1-1, an outer conductor 1a-1-2, and a glass powder sintered material 1a-1-3 disposed between the inner conductor pin contact 1a-1-1 and the outer conductor 1a-1-2.

[0012] During insertion, the free-terminated cable plug connector and the screw-mounted fixed airtight socket connector are axially inserted into place through the symmetrical trapezoidal interfaces provided on the insertion end faces, and then the locking screws 7 at both ends of the free-terminated cable plug connector are alternately and symmetrically screwed into the threaded holes of the airtight socket screws 4a to complete the insertion and locking.

[0013] The plug shell 2 mating interface is designed with a trapezoidal groove interface 2-1 to prevent mis-insertion. Correspondingly, the socket shell 2a mating interface is designed with a trapezoidal boss interface 2a-1 that matches with it when plugged in. The position and shape of the trapezoidal groove interface match the trapezoidal boss interface.

[0014] The array of radio frequency coaxial jack contacts 1 is evenly distributed at the center of the interface of the plug housing 2, and locking accessories are arranged on both sides of the interface.

[0015] The locking screw 7 is assembled into one body with the plug housing 2 by riveting through the rivet sleeve 8, and is designed as a non-loose fixing structure.

[0016] The cable assembly formed by the RF coaxial jack contact 1 and the plug RF coaxial cable 11 is installed in the plug shell 2, and a multi-core fixed wire protection shell 4 with a split snap-fit ​​structure is provided at the rear of the plug shell 2, which is used to fix and protect the plug RF coaxial cable 11; after the wire protection shell 4 is snapped, the interior is a cable clearance cavity 4-2, and a split snap-fit ​​wire protection shell installation fixing hole 4-3 is designed around the cable clearance cavity 4-2; the inner end face of the rear end of the wire protection shell 4 is designed with a fixed cable semicircular groove 4-4 adapted to the cable radius to achieve cable clamping and protection.

[0017] The plug shell 2 is provided with an annular convex key 2-2, and the corresponding position of the wire protection shell 4 is provided with an annular key groove 4-1 to realize the axial positioning of the plug shell 2 and the wire protection shell 4, and finally the plug shell 2 and the wire protection shell 4 are connected and fixed by fixing screws 9.

[0018] The outer surface of the wire protection shell 4 is provided with an array of anti-skid grooves 4-5, which have the effect of increasing friction during plugging and unplugging operations.

[0019] The two ends of the screw-mounted fixed airtight socket housing 2a are designed with airtight socket screws 4a and mounting holes to enhance the connection reliability. The airtight socket screw 4a is configured to be connected and locked with the locking screw 7 at one end and to be threadedly fastened with the user's installation panel at the other end, which reduces the size of the connector, making it more compact and lightweight, and at the same time improves the airtightness of the screw-mounted fixed airtight socket.

[0020] The radio frequency coaxial pin contact 1a is fixed in the cavity of the socket housing 2a by using soldering and epoxy resin potting technology.

[0021] The radio frequency coaxial jack contact 1 and the radio frequency coaxial pin contact 1a adopt the interface dimensions of the SMP series connector, and the main bodies of the plug housing 2 and the socket housing 2a are both made of lightweight aluminum alloy material.

[0022] The socket shell 2a installation interface is provided with an O-ring placement groove 2a-2, which ensures that the O-ring 3a is installed in the appropriate position to ensure the sealing effect and the stability of the installation and fixation; the socket shell 2a adopts a circular transition structure 2a-3 at the welding terminal with the RF coaxial pin contact 1a, which effectively alleviates the stress distribution at the end during welding.

[0023] Compared with the prior art, the utility model has the following advantages and effects:

[0024] 1) The plug and socket shell is designed with a concave and convex "trapezoidal" interface, which achieves a high degree of anti-misinsertion function and ensures accurate positioning when the header is plugged in.

[0025] 2) On the one hand, the RF coaxial jack contacts and RF coaxial pin contacts adopt the interface dimensions of the SMP series connectors, and through reasonable size design, they meet the design requirements of high density, small pitch, and small space integration; on the other hand, the main body of the plug and socket shells are made of lightweight aluminum alloy material, and the socket shell is designed as a special-shaped flange structure. The above design meets the needs of miniaturization, high density and lightweight.

[0026] 3) The connection interface and installation interface of the screw-mounted fixed airtight socket adopt a double sealing structure design. Connection interface: glass powder sintering material between the outer conductor and inner conductor pin contact of the RF coaxial pin contact, the RF coaxial pin contact and the socket shell body are soldered and fixed, and finally epoxy resin potting is used for secondary protection and fixation; Installation interface: the screw-mounted fixed airtight socket and the user panel adopt the airtight socket screw installation method. A sealing gasket with sealing function is designed at the plug shell plug-in interface, and an O-ring is designed at the socket shell flange installation.

[0027] 4) When the installation space is limited, the free-terminated cable plug connector is designed with a wire protection shell at the rear end to clamp and fix the plug RF coaxial cable, which not only forms a sufficient cable bending protection section for the welding part of the plug RF coaxial cable to ensure the reliability of the product during use, but also has the function of fixing the cable.

[0028] 5) An annular convex key and an annular key groove are designed on the rear end face of the plug shell and the inner cavity of the wire protection shell respectively to realize the axial fixation and connection of the plug shell and the wire protection shell.

[0029] 6) The wire protection shell is designed as a split snap-fit ​​structure. After snapping, the inside makes way for the cable. The split snap-fit ​​wire protection shell installation fixing holes are designed around the cavity, which is simple to assemble, reliable in connection and easy to maintain.

[0030] 7) The inner end face of the cable protection shell is designed with a fixed cable semicircular groove that matches the cable radius to achieve cable clamping and protection.

[0031] 8) The RF coaxial pin contact and the screw-mounted fixed airtight socket shell body are fixed by soldering and then encapsulating with epoxy resin. Large thermal stress is generated during the soldering process, which easily forms stress accumulation and causes weld cracking. In order to alleviate the stress distribution at the end, a circular transition structure is used at the socket shell welding terminal.

[0032] 9) Locking screws are used during insertion to achieve easy insertion and removal, which is practical and novel.

[0033] 10) The outer surface of the wire protection shell is designed with an anti-skid groove structure to increase friction and prevent slipping when plugging and unplugging.

[0034] 11) The inner conductor of the RF coaxial pin contact is designed as a split structure of the inner conductor pin contact and the adapter jack, which improves the reliability and stability of the connection, adapts to connections of various sizes and structural forms, reduces processing difficulty and production costs, and facilitates installation and maintenance.

[0035] 12) The sintered component is designed as a glass powder sintered structure for the inner conductor pin contact. Compared with the sintered structure for the inner conductor socket contact, it has good reliability and long-term stability, improves system integration, and reduces processing difficulty and cost.

[0036] 13) The RF coaxial jack contact is designed as a claw fixing structure, which can be disassembled and fixed multiple times without damaging the connector, thereby improving the maintainability of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1a This is the front view of the free-termination cable plug connector of the utility model. Figure 1b This is a top view of the free-termination cable plug connector of the utility model without the cover. Figure 1c is a three-dimensional diagram of the plug housing 2, Figure 1d It is a three-dimensional diagram of the wire protection shell 4. Figure 1e It is a cross-sectional view of the structure of the radio frequency coaxial jack contact 1. Figure 1f A cross-sectional view of a fixing structure of a clamping claw 3 is designed to install a radio frequency coaxial jack contact 1 into a cavity of a plug housing 2.

[0038] Figure 2a This is a top view of the screw-mounted fixed airtight socket connector of the utility model without the cover. Figure 2b This is the front view of the screw-mounted fixed airtight socket connector of the utility model. Figure 2c A three-dimensional diagram of a screw-mounted fixed gas-tight socket connector. Figure 2d It is a three-dimensional diagram of the socket housing 2a. Figure 2e This is a cross-sectional view of the structure of the RF coaxial pin contact 1a. Figure 2f It is a cross-sectional view of the structure of the sintered component 1a-1. DETAILED DESCRIPTION

[0039] The utility model is further described in detail below with reference to the accompanying drawings:

[0040] The utility model relates to a connector of a multi-core radio frequency integrated plug and socket with an air-tight function, comprising a freely terminated cable plug and a screw-mounted fixed air-tight socket.

[0041] like Figure 1a and 1b As shown, the free-terminated cable plug includes a plurality of RF coaxial jack contacts 1, and a plurality of mounting holes (taking 9 cores as an example) for fixing the RF coaxial jack contacts 1 are evenly arranged in an array at the center of the plug shell 2, and claws 3 are arranged in the mounting holes to fix the RF coaxial jack contacts 1 to the inner side of each mounting hole cavity of the plug shell 2. A trapezoidal groove interface 2-1 is arranged at the plug-in interface of the plug shell 2, which has an anti-wrong insertion function when connected to the socket. A wire protection shell 4 is arranged at the tail of the plug shell 2, and locking screws 7, spring washers 10 and rivet sleeves 8 are arranged at the mounting holes on both sides of the plug shell 2 to achieve a locking effect with the socket. Two through holes and two threaded holes are arranged symmetrically around the cavity of the wire protection shell 4, and the plug shell 2, the wire protection shell 4, the RF coaxial jack contact 1 and the RF coaxial cable 11 are assembled together with fixing screws 9. The plug housing 2 is provided with a plug dust cover 5 and a sealing gasket 6 on the mating end surface. The plug dust cover 5 is mainly used to prevent dust, dirt, particles, etc. from entering the contact parts of the connector, reducing the occurrence of circuit short circuits, electrical failures and overheating. When the plug and socket are mated, the sealing gasket 6 forms a sealing barrier to prevent liquids, gases and other substances from penetrating or leaking through the seams.

[0042] like Figure 1c , Figure 1d As shown, the plug housing 2 is provided with an annular convex key 2-2 on the outside, and the wire protection shell 4 is provided with an annular key groove 4-1 on the inside, so as to realize the axial connection and positioning between the plug housing 2 and the wire protection shell 4. Anti-loosening accessory mounting holes 2-3 are provided at both ends of the plug housing 2, and the rivet sleeve 8, the locking screw 7, and the spring washer 10 are installed into the anti-loosening accessory mounting holes 2-3, and the locking screw 7 and the plug housing 2 are installed and fixed and anti-loosening functions are realized by riveting at both ends of the rivet sleeve 8.

[0043] like Figure 1dAs shown, the cable giving way cavity 4-2 and the fixed cable semicircular groove 4-4 are respectively arranged inside the wire protection shell 4. The cable giving way cavity 4-2 ensures that the welding parts of multiple plug RF coaxial cables 11 form sufficient cable bending protection sections, and the fixed cable semicircular groove 4-4 has the function of clamping and fixing a single plug RF coaxial cable 11; the outside of the wire protection shell 4 is respectively provided with anti-skid grooves 4-5 and installation fixing holes 4-3. The anti-skid grooves 4-5 increase the plug-in and pull-out friction when plugging and unplugging with the socket. The installation fixing holes 4-3 are provided with two mixed installation holes of threaded holes and through holes according to the assembly matching relationship. Finally, the plug shell 2, the wire protection shell 4, the RF coaxial jack contact 1 and the plug RF coaxial cable 11 are assembled together with fixing screws 9.

[0044] like Figure 1e As shown, the structure of the RF coaxial jack contact 1 adopts the interface size of the SMP series connector. Compared with other RF connectors, the SMP connector is smaller in size. The SMP connector is very suitable for applications with limited space and meets the advantages of high density, small pitch, and small space integration.

[0045] like Figure 1e As shown, the RF coaxial jack contact 1 consists of an inner conductor jack 1-1, a front insulator 1-2 at the jack end, a rear insulator 1-3 at the jack end and an outer conductor 1-4 at the jack end. The front insulator 1-2 at the jack end is wrapped in the outer conductor 1-4 at the jack end. The inner conductor jack 1-1 is positioned in the front insulator 1-2 at the jack end through a step to meet the interface requirements. When the inner conductor jack 1-1 is assembled in place, the rear insulator 1-3 at the jack end is arranged on the rear end face of the inner conductor jack 1-1, and is sandwiched between the inner conductor jack 1-1 and the plug RF coaxial cable 11.

[0046] like Figure 1f As shown, the claw 3 is arranged in a mounting hole distributed in the center of the plug housing 2 to fix the cable assembly consisting of the RF coaxial jack contact 1 and the plug RF coaxial cable 11 inside the mounting hole of the plug housing 2.

[0047] During assembly, the first step is to first pass the locking screw 7, spring washer 10, and rivet sleeve 8 through the locking mounting holes at both ends of the plug housing 2, and the rivet sleeve 8 is fixed with the plug housing 2 stepwise, and the other end of the rivet sleeve 8 is riveted to ensure that the locking screw 7 cannot fall out of the rivet sleeve 8 and can rotate freely. The second step is to install the claws 3 into each mounting hole of the plug housing 2, and then weld and assemble multiple RF coaxial jack contacts 1 and plug RF coaxial cables 11, and finally install multiple RF coaxial jack contacts 1 with plug RF coaxial cables 11 into each mounting hole of the plug housing 2 for position fixation. Step 3: The wire protection shell 4 is axially fixedly connected to the plug shell 2 through the annular keyway 4-1 and the annular convex key 2-2. The wire protection shell 4 clamps and fixes multiple plug RF coaxial cables 11 through the fixed cable semicircular groove 4-4. The fixing screw 9 passes through the installation fixing hole 4-3 of the split snap-fit ​​wire protection shell 4 to fix the wire protection shell 4 and the plug shell 2 together, which has the function of fixing and protecting the cable. Step 4: The sealing gasket 6 of the assembly interface and the plug dust cover 5 of the plug end face. After completing the above four steps, the assembly of the free-terminated cable plug connector is completed.

[0048] like Figure 2a , Figure 2b , Figure 2c , Figure 2d , Figure 2e and 2f As shown, the screw-mounted fixed airtight socket includes a plurality of RF coaxial pin contacts 1a, and the RF coaxial pin contacts 1a and the socket shell 2a are fixed to the inner side of the cavity of the socket shell 2a by soldering, and epoxy resin encapsulation is used for secondary protection and fixation. The two ends of the socket shell 2a are respectively provided with airtight socket screw 4a mounting holes and panel mounting fixing holes. The airtight socket screw 4a and the socket shell 2a are not assembled and are supplied in bulk. When the plug and socket are plugged in, the airtight socket screw 4a has both a locking function and an external thread is designed at the tail to achieve a sealed connection with the user panel. An O-ring 3a is provided at the tail of the socket shell 2a, and when installed with the user panel, a sealing barrier is formed to prevent liquid, gas and other substances from penetrating or leaking through the seam. The interface sealing between the socket connector and the user panel is achieved. A socket dust cover 5a is provided on the plug-in end face of the socket shell 2a, and the socket dust cover 5a has the function of preventing dust pollution and protecting the contacts.

[0049] like Figure 2c , Figure 2dAs shown, the flange of the socket housing 2a is designed as a special-shaped structure, which realizes the miniaturization and lightweight requirements of the product structure while meeting the user's installation space. The socket housing 2a is provided with a trapezoidal boss interface 2a-1 that cooperates with the socket plug housing 2 on the insertion interface, which has the function of preventing wrong insertion. The installation interface of the socket housing 2a is provided with an O-ring placement groove 2a-2, which ensures that the O-ring 3a is installed in the appropriate position to ensure the sealing effect and the stability of the installation and fixation. The socket housing 2a adopts a circular transition structure 2a-3 at the welding terminal with the RF coaxial pin contact 1a, which can effectively alleviate the stress distribution at the end during welding.

[0050] like Figure 2e As shown, the RF coaxial pin contact 1a structure adopts the interface size of the SMP series connector. Compared with other RF connectors, the SMP connector is smaller in size. The SMP connector is very suitable for applications with limited space and meets the advantages of high density, small pitch, and small space integration.

[0051] like Figure 2e As shown, the RF coaxial pin contact 1a includes a sintered assembly 1a-1, a transfer jack 1a-2, a front end insulator 1a-3, a rear end insulator 1a-4, a welding wire barrel 1a-5 and a fastening screw 1a-6. The transfer jack 1a-2 is inserted into the front end insulator 1a-3 of the jack end, and the rear end insulator 1a-4 of the jack end is arranged on the rear end face of the transfer jack 1a-2, sandwiched between the transfer jack 1a-2 and the socket RF coaxial cable 6a. The welding wire barrel 1a-5 is arranged outside the RF coaxial cable 6a, and the fastening screw 1a-6 is arranged in the middle position between the sintered assembly 1a-1 and the welding wire barrel 1a-5.

[0052] like Figure 2f As shown, the sintered assembly 1a-1 includes an inner conductor pin contact 1a-1-1, an outer conductor 1a-1-2 and a glass powder sintered material 1a-1-3. The outer conductor 1a-1-2 and the inner conductor pin contact 1a-1-1 are connected by the glass powder sintered material 1a-1-3. The glass powder sintered material 1a-1-3 wraps the inner conductor pin contact 1a-1-1, and the glass powder sintered material 1a-1-3 is fixed inside the outer conductor 1a-1-2 through a sintering process. A stepped hole is provided inside the outer conductor 1a-1-2, and the stepped hole positioning is used to ensure that the interface requirements are met.

[0053] During assembly, the first step is to weld and assemble the adapter jack 1a-2, the rear end insulator 1a-4, the welding wire barrel 1a-5, and the socket RF coaxial cable 6a together. The second step is to assemble the sintered component 1a-1 and the socket shell 2a together by soldering. In addition to controlling the welding temperature, welding time and solder amount, a special clamp is designed to be used with welding to effectively prevent the occurrence of solder creep and ensure the welding quality and connection reliability. The third step is to install the front end insulator 1a-3 into the outer conductor 1a-1-2 of the sintered component 1a-1, and then install the welded adapter jack cable into the front end insulator 1a-3, so that the adapter jack 1a-2 is elastically contacted and connected with the inner conductor pin contact 1a-1-1 in the sintered component 1a-1, and finally the fixing nut 1a-6 is threadedly connected with the outer conductor 1a-1-2 in the sintered component 1a-1 to complete the assembly of the socket RF coaxial pin contact 1a. Step 4: Fill the tail of the socket housing 2a with epoxy resin, apply 704 sealant to the O-ring 3a and install it into the O-ring seal placement groove 2a-2 in the socket housing 2a, and finally assemble the socket dust cover 5a. After completing the above four steps, the assembly of the screw-mounted fixed airtight socket connector is completed.

[0054] like Figure 1c , Figure 1d , Figure 2d As shown, the plug shell 2 plug-in interface is designed with a trapezoidal groove interface 2-1 to prevent mis-insertion, and correspondingly, the socket shell 2a plug-in interface is designed with a trapezoidal boss interface 2a-1 that matches with it when plugged in. The position and shape of the trapezoidal groove interface and the trapezoidal boss interface are matched. Through the above design, a good anti-mis-insertion function is achieved. The tail of the plug shell 2 is designed with an annular convex key 2-2, and correspondingly, an annular key groove 4-1 is designed in the cavity of the wire protection shell 4. Through the above design, the axial positioning of the wire protection shell 4 and the plug shell 2 is achieved. The cavity of the wire protection shell 4 is designed with a semicircular groove 4-4 for fixing the cable and a cable giving way cavity 4-2, and an anti-slip groove 4-5 and an installation fixing hole 4-3 for plugging and unplugging operations are designed outside the cavity, which realizes a reliable connection between the wire protection shell 4 and the plug shell 2, which is convenient for plugging and unplugging when plugged in, and has the function of fixing and protecting the cable.

[0055] like Figure 1b and Figure 2a As shown, the plug RF coaxial jack contact 1a and the socket RF coaxial pin contact 1a are distributed in the middle of the shell body interface, and the integrated interface is symmetrically designed to meet the signal transmission requirements, minimize the external dimensions, and facilitate parallel plugging and unplugging.

[0056] like Figure 2b , Figure 2c , Figure 2dAs shown, the screw-mounted fixed airtight socket is a screw-mounted type, and the socket housing 2a is designed to be a special-shaped flange screw-mounted type, which meets the requirements of miniaturization and lightweight, reduces the product's overall dimensions, and reduces the product's weight.

[0057] like Figure 1a , Figure 2b As shown, the locking screw 7 and the plug housing 2 are designed to have a non-loose fixing structure. Under the premise of ensuring the locking function, this design structure assists the connector in plugging and disengaging by engaging and disengaging the external thread of the locking screw 7 with the internal thread of the airtight socket screw 4a for locking.

[0058] like Figure 2c , Figure 2d As shown, the socket housing 2a is made of lightweight aluminum alloy material, which has the advantages of light weight, high strength, corrosion resistance, good thermal conductivity, good plasticity and recyclability, etc., which meets the demand for lightweight of modern electronic equipment and reduces the overall weight and volume of the equipment. At the same time, the design of the screw-mounted fixed airtight socket connector has been streamlined and optimized. The socket housing 2a is designed as a cylindrical stepped hole, which is convenient for the axial positioning of the RF coaxial pin contact 1a. The compact structure and precise manufacturing process greatly reduce the difficulty of processing, and the parts have strong versatility, which greatly reduces the production cost.

[0059] like Figure 2e As shown, the inner conductor of the RF coaxial pin contact 1a is designed as a split structure, that is, the glass-sealed inner conductor in the sintered component 1a-1 is designed as the inner conductor pin contact 1a-1-1. In order to ensure reliable connection with the tail-terminated cable, it is designed as a structure in which the inner conductor pin contact 1a-1-1 is elastically connected to the adapter socket 1a-2. First, the elastic transition between the inner conductor pin contact 1a-1-1 and the adapter socket 1a-2 can effectively reduce problems such as contact resistance, crosstalk and signal attenuation, and improve the reliability and stability of the connection. Second, the elastic transition between the inner conductor pin contact 1a-1-1 and the adapter socket 1a-2 has high adaptability and can be adapted to connections of various sizes and shapes. Third, compared with other structures of the pin inner conductor, the elastic transition structure between the inner conductor pin contact 1a-1-1 and the adapter socket 1a-2 has a lower cost, and the inner conductor pin contact 1a-1-1 can be realized through a simple manufacturing process without complex processing and high costs. Fourth, the elastic connection between the inner conductor pin contact 1a-1-1 and the adapter jack 1a-2 is easier to install and maintain than other connection methods. Due to the elastic characteristics of the pin and the hole, they can be connected and disconnected by simple plugging and unplugging operations, which makes the installation and maintenance process faster and more convenient, saving time and labor costs.

[0060] like Figure 2fAs shown, the sintered component 1a-1 is designed as a glass powder sintered structure of the inner conductor pin contact 1a-1-1. Compared with the inner conductor sintered structure of the socket, first, the sintering of the inner conductor of the pin can provide stable contact resistance and mechanical properties, and has good reliability and long-term stability. Second, the glass sintering of the inner conductor pin contact can achieve a small size design, save space, and improve system integration. It is suitable for compact equipment and applications with high-density connection requirements. Third, the material of the sintered inner conductor pin contact is expanded alloy wire, nickel-based soft gold plating, and the alloy wire is difficult to process. The inner conductor pin contact is relatively simple in structure and small in size compared to the inner conductor of the socket, which effectively reduces the processing difficulty and processing cost.

[0061] like Figure 2b , 2c As shown in 2d, airtight socket screws 4a and mounting holes are designed at both ends of the screw-mounted fixed airtight socket housing 2a. This structure not only meets the locking requirements during insertion, but also meets the triple requirements of sealing and fixation with the user's installation panel. The structural design is reasonable and novel.

[0062] As shown in FIG. 1 and FIG. 2 , the utility model is illustrated by taking 9 cores as an example. The number of contacts of the electrical connector can be expanded and changed on the basis of the structure, which can realize personalized customization requirements and provide a structural design solution for the expansion of product series.

[0063] The plugging and locking process of the free-terminated cable plug connector and the screw-mounted fixed airtight socket connector of the utility model is as follows: first, the airtight socket screws 4a and the mounting fixing holes at both ends of the socket shell 2a of the screw-mounted fixed airtight socket connector are used, and at the same time, standard screw accessories are used to achieve installation and fixation with the panel; secondly, the trapezoidal groove interface of the free-terminated cable plug connector is aligned and matched with the trapezoidal boss interface of the screw-mounted fixed airtight socket connector, and then the locking screws 7 with spring washers 10 at both ends of the free-terminated cable plug connector are alternately screwed into the threaded holes of the airtight socket screws 4a, the interface is axially plugged into place, the thread of the locking screw is meshed into place, and the plugging and locking of the free-terminated cable plug connector and the screw-mounted fixed airtight socket connector are achieved at the same time.

[0064] The utility model discloses a connector of a multi-core radio frequency integrated plug and socket with an air-sealing function, which has a novel structure and strong practicality, and meets the requirements of integration, miniaturization, light weight, interface integration, high reliability, customization, anti-misinsertion, easy assembly, economy, and excellent performance. The products can be expanded in series based on market demand, and have great application and promotion value, and have considerable market prospects.

Claims

1. A connector with a multi-core radio frequency integrated plug and socket having an airtight sealing function, characterized in that: Includes free-terminating cable plug connectors and screw-mounted fixed gas-tight socket connectors; The free-terminated cable plug connector comprises a plurality of radio frequency coaxial jack contacts (1), a plug housing (2), a claw (3) for fixing the radio frequency coaxial jack contacts (1), a sealing gasket (6) with a sealing function is arranged at the plug-in interface of the plug housing (2), a wire protection shell (4) for fixing and protecting the cable is arranged at the rear of the plug housing (2), a plug dust cover (5) is arranged on the plug-in end face, and locking screws (7), rivet sleeves (8), and spring washers (10) are arranged on both sides of the plug housing (2) and are locked and connected to the screw-mounted fixed airtight socket connector; The screw-mounted fixed airtight socket connector comprises a radio frequency coaxial pin contact (1a), a socket housing (2a), an O-ring (3a) arranged at the interface with the user panel installation, a socket dust cover (5a) arranged at the mating end face, and airtight socket screws (4a) which are locked and connected to the free-terminated cable plug connector are arranged at both ends of the socket housing (2a), one end of the airtight socket screw (4a) is connected and locked with a locking screw (7), and the other end is threadedly fastened with the user installation panel; the radio frequency coaxial pin contact (1a) is fixed in the side wall of the socket housing (2a) cavity by soldering and epoxy resin potting process, and a circular transition structure (2a-3) is adopted at the welding end of the socket housing (2a); The plug housing (2) has a mating interface designed with a trapezoidal groove interface (2-1) to prevent mis-mating, and correspondingly, the socket housing (2a) has a mating interface designed with a trapezoidal boss interface (2a-1) that matches when mated, and the position and shape of the trapezoidal groove interface match those of the trapezoidal boss interface; The free-terminated cable plug connector and the screw-mounted fixed airtight socket connector are axially plugged into place through the symmetrical trapezoidal interfaces provided on the plugging end faces, and then the locking screws (7) at both ends of the free-terminated cable plug connector are alternately and symmetrically screwed into the threaded holes of the airtight socket screws (4a) to complete the plugging and locking.

2. A connector with a multi-core radio frequency integrated plug and socket having an airtight sealing function according to claim 1, characterized in that: The locking screw (7), the rivet sleeve (8) and the plug housing (2) are fixedly connected by means of an expansion riveting process.

3. The connector of a multi-core radio frequency integrated plug and socket with airtight function according to claim 1, characterized in that: The radio frequency coaxial jack contact pieces (1) are arranged in a single row or double row in each hole position in the middle area of ​​the plug shell (2); the radio frequency coaxial jack contact pieces (1) and the plug radio frequency coaxial cable (11) are assembled into a cable assembly by welding; and the radio frequency coaxial jack contact pieces (1) matched with the plug radio frequency coaxial cable (11) are fixed in each hole position of the plug shell (2) by means of a clamping claw (3).

4. The connector of a multi-core radio frequency integrated plug and socket with airtight function according to claim 1, characterized in that: The radio frequency coaxial jack contact piece (1) comprises an inner conductor jack (1-1), a front insulator (1-2) at the jack end, a rear insulator (1-3) at the jack end and an outer conductor (1-4) at the jack end. The front insulator (1-2) at the jack end is wrapped in the outer conductor (1-4) at the jack end, and the inner conductor jack (1-1) is wrapped in the front insulator (1-2) at the jack end. The interface requirements are met by positioning the inner conductor jack (1-1) step. When the inner conductor jack (1-1) is assembled in place, the rear insulator (1-3) at the jack end is arranged on the rear end face of the inner conductor jack (1-1) and is sandwiched between the inner conductor jack (1-1) and the plug radio frequency coaxial cable (11).

5. The connector of a multi-core radio frequency integrated plug and socket with airtight function according to claim 1, characterized in that: The radio frequency coaxial pin contact (1a) comprises a sintered assembly (1a-1), a transfer jack (1a-2), a front end insulator (1a-3), a rear end insulator (1a-4), a welding wire barrel (1a-5), and a fixing nut (1a-6); wherein the transfer jack (1a-2) is wrapped in the front end insulator (1a-3), the transfer jack (1a-2) and the front end insulator (1a-3) are arranged in the sintered assembly (1a-1), the rear end insulator (1a-4) is arranged on the rear end surface of the transfer jack (1a-2) and is sandwiched between the transfer jack (1a-2) and the socket radio frequency coaxial cable (6a), a welding wire barrel (1a-5) is arranged outside the socket radio frequency coaxial cable (6a), and a fixing nut (1a-6) is arranged between the welding wire barrel (1a-5) and the sintered assembly (1a-1).

6. A connector with a multi-core radio frequency integrated plug and socket having an airtight sealing function according to claim 5, characterized in that: The sintered assembly (1a-1) comprises an inner conductor pin contact piece (1a-1-1), an outer conductor (1a-1-2), and a glass powder sintered material (1a-1-3) arranged between the inner conductor pin contact piece (1a-1-1) and the outer conductor (1a-1-2).

7. The connector of a multi-core radio frequency integrated plug and socket with airtight function according to claim 1, characterized in that: The cable assembly formed by assembling the radio frequency coaxial jack contact piece (1) and the plug radio frequency coaxial cable (11) is installed in the plug shell (2), and a multi-core fixed wire protection shell (4) with a split snap-fit ​​structure is arranged at the rear of the plug shell (2) for fixing and protecting the plug radio frequency coaxial cable (11); after the wire protection shell (4) is snap-fitted, the interior is a cable clearance cavity (4-2), and installation fixing holes (4-3) of the split snap-fit ​​wire protection shell are designed around the cable clearance cavity (4-2); and a semicircular groove (4-4) for fixing the cable adapted to the radius of the cable is designed on the inner end face of the rear end of the wire protection shell (4).

8. The connector of a multi-core radio frequency integrated plug and socket with airtight function according to claim 7, characterized in that: An annular convex key (2-2) is arranged on the plug shell (2), and an annular key groove (4-1) is arranged at a corresponding position on the wire protection shell (4) to achieve axial positioning of the plug shell (2) and the wire protection shell (4), and the plug shell (2) and the wire protection shell (4) are connected and fixed by fixing screws (9); the outer surface of the wire protection shell (4) is provided with array-distributed anti-skid grooves (4-5).

9. The connector of a multi-core radio frequency integrated plug and socket with airtight function according to claim 1, characterized in that: The radio frequency coaxial jack contact (1) and the radio frequency coaxial pin contact (1a) adopt the interface dimensions of the SMP series connector, and the main bodies of the plug housing (2) and the socket housing (2a) are both made of lightweight aluminum alloy material.

10. The connector of a multi-core radio frequency integrated plug and socket with airtight function according to claim 1, characterized in that: The socket shell (2a) is provided with an O-ring placement groove (2a-2) on the installation interface to ensure the installation position of the O-ring (3a); the socket shell (2a) adopts a circular transition structure (2a-3) at the welding terminal with the radio frequency coaxial pin contact piece (1a).

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