Optical fiber hermetic seal contact and adapter connector

Abstract

The application belongs to the technical field of connectors and specifically relates to an optical fiber air-tight contact piece and an adapter connector, which comprises an adapter flange plate, an outer flange plate and a pin component, the pin component comprises an inner flange plate and a ceramic pin inserted into the inner flange plate, the outer wall of the inner flange plate is provided with a sleeve part, the end of the outer flange plate is a closed end, the closed end makes the end of the outer flange plate form a sleeve cavity, the sleeve part is arranged in the sleeve cavity after the inner flange plate is inserted into the end of the outer flange plate, so that the pin component is movably arranged at the end of the outer flange plate, the optical fiber is arranged in the adapter flange plate, air-tightness is achieved by glue injection in the adapter flange plate, the optical fiber is positioned, and the two ends of the optical fiber are arranged in the inner hole of the ceramic pin after passing through the outer flange plate and the inner flange plate of the corresponding end. While avoiding damage to the insertion structure, the optical performance of the product is improved, and air-tightness is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of connectors, and particularly relates to an optical fiber airtight contact piece and an adapter connector. BACKGROUND

[0002] In the existing J599III series optical fiber airtight adapter connector or J599A8 series optical fiber airtight adapter connector, in order to realize airtightness, the contact piece needs to be bonded or fixed in the adapter connector by other means, therefore, at least one end of the contact piece at both ends of the adapter connector cannot move. If the contact piece cannot move, when the plug connector is inserted into the adapter connector, the plug contact piece and the adapter contact piece are rigidly connected without floating space. In the process of rotating the nut on the plug connector or using the buckle, push-pull structure and other insertion locking structures to realize the plug-in and locking of the plug connector and the adapter connector, the ceramic sleeve of the plug connector and the ceramic pin of the adapter connector are subjected to shearing force, thereby increasing the damage to the ceramic sleeve and the ceramic pin during plugging, and even causing the ceramic sleeve to break, which affects the optical performance of the connector.

[0003] For example, in a single-mode optical fiber sealed connector with the patent number 201810175069.6, the pin assembly includes a pin shell, a ceramic pin and a single-mode optical fiber. The ceramic pin is installed at both ends of the pin shell in a press-fit manner. The pin shell is provided with a through hole with a circular cross section. The single-mode optical fiber is arranged in the ceramic pin and the through hole. The single-mode optical fiber is fixed at the connector of the ceramic pin by bonding. Although it can ensure accurate connection and airtightness, the ceramic pin and the ceramic sleeve are easily damaged during plugging, which affects the optical performance of the connector. SUMMARY

[0004] To solve the technical problem that the pin part of the adapter connector cannot slide and affects the optical performance of the connector, the present application provides an optical fiber airtight contact piece and an adapter connector.

[0005] The object of the application is achieved by the following technical scheme. The application provides an optical fiber airtight contact piece, which comprises an adapter flange, outer flanges arranged at both ends of the adapter flange, and pin components inserted into the ends of the outer flanges, wherein the pin components comprise inner flanges and ceramic pins inserted into the inner flanges, the outer wall of the inner flange is provided with a sleeve portion, the end of the outer flange is a closed end, the end of the outer flange is formed into a sleeve cavity after being closed, and the sleeve portion is arranged in the sleeve cavity after the inner flange is inserted into the end of the outer flange, so that the pin component is movably arranged at the end of the outer flange; an optical fiber is arranged in the adapter flange, the optical fiber is fixed by glue injection in the adapter flange, and the airtightness between the two ends of the adapter flange is realized, and the two ends of the optical fiber are arranged in the inner hole of the ceramic pin after passing through the outer flange and the inner flange of the corresponding end.

[0006] Compared with the prior art, the application has the advantages that:

[0007] The contact piece structure of the application limits the pin components and the corresponding outer flanges by the closed manner, the pin components can move at the end of the outer flange, the pin components can swing relative to the adapter connector, the ceramic sleeve and the ceramic pin are swung when shear force occurs during the insertion of the ceramic sleeve and the ceramic pin, the shear force received by the ceramic sleeve and the ceramic pin is reduced, damage to the insertion structure is avoided, and the optical performance is affected.

[0008] Further, the adapter flange is provided with an optical fiber bonding hole at the middle position and a bundle tube bonding hole in communication with the optical fiber bonding hole at both ends, the optical fiber is arranged in the optical fiber bonding hole and the bundle tube bonding hole, and the bundle tube is arranged in the bundle tube bonding hole and sleeved on the optical fiber.

[0009] Further, the adapter flange is provided with an optical fiber bonding hole at the middle position and a bundle tube bonding hole in communication with the optical fiber bonding hole at both ends, the optical fiber is arranged in the optical fiber bonding hole and the bundle tube bonding hole, and the bundle tube is arranged in the bundle tube bonding hole and sleeved on the optical fiber.

[0010] Compared with the prior art, the application has the advantages that:

[0011] The outer flange is installed after the airtightness is determined to be qualified, and the overall rework caused by unqualified airtightness is avoided.

[0012] Further, the ceramic pin is inserted into the inner flange, then glue is injected into the pin part, after the glue injection, the inner flange is inserted into the end of the outer flange, and the optical fiber and the bundle tube sleeved outside the optical fiber are inserted into the pin part, wherein the optical fiber is arranged in the ceramic pin and the inner flange, the bundle tube is arranged in the inner flange, and after the glue solidification, the bundle tube, the optical fiber and the pin part are fixed.

[0013] Compared with the prior art, the present application has the advantages of:

[0014] When the opening is closed, the bending degree of the opening can be controlled according to the requirement, and space is left for the movement of the pin part.

[0015] Further, the outer wall of the adapter flange is provided with an O-ring groove and / or a glue injection groove.

[0016] Compared with the prior art, the present application has the advantages of:

[0017] By installing an O-ring in the O-ring groove and / or injecting glue in the glue injection groove, the sealing of the contact and the installed shell is realized.

[0018] Further, one end of the outer flange away from the opening end is a threaded connection end for threaded connection with the adapter flange.

[0019] Further, the inner wall of the inner flange is provided with a first limiting step for stopping the ceramic pin forward.

[0020] Compared with the prior art, the present application has the advantages of:

[0021] The first limiting step is used for limiting the ceramic pin, so as to avoid that the ceramic pin is inserted too much and the inner hole of the ceramic pin is extruded and cannot insert the optical fiber.

[0022] Further, the outer wall of the sleeve part is provided with an anti-rotation single key, and correspondingly, the end of the outer flange is provided with an anti-rotation key groove for inserting the anti-rotation single key.

[0023] Compared with the prior art, the present application has the advantages of:

[0024] The contact is prevented from rotating the pin part when the plug is inserted, and the optical fiber is prevented from breaking.

[0025] Further, the wall of the outer flange is provided with an observation hole for observing whether the inner flange is inserted in place.

[0026] Compared with the prior art, the present application has the advantages of:

[0027] When assembling, whether the inner flange is inserted in place is observed through the observation hole, so as to avoid damage to each part due to over-insertion.

[0028] An adapter connector includes a housing and a contact element inserted into a first contact hole within the housing. The contact element is a fiber optic hermetically sealed contact element. After the contact element is inserted into the housing, the end of the outer flange and the pin assembly are located within a mating cavity. A pressure plate is installed at the bottom of the mating cavity, and the pin assembly extends out of the pressure plate. A fourth limiting step for blocking the end of the outer flange is provided in a second contact hole within the pressure plate for the pin assembly to pass through.

[0029] Compared with the prior art, the advantages of the present invention are:

[0030] The contact pins have a movable space, which prevents damage to the mating parts and improves optical performance when the adapter connector and plug connector are mated.

[0031] Furthermore, the inner wall of the first contact hole is provided with a third limiting step, and the outer wall of the contact is provided with a stop protrusion for abutting against the third limiting step.

[0032] Compared with the prior art, the advantages of the present invention are:

[0033] When inserting the contact, the contact is positioned by the third limiting step, without the need for measurement, and the pressure plate can be directly installed on the contact.

[0034] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0035] Figure 1 This is an overall cross-sectional view of an embodiment of the optical fiber hermetically sealed contact of the present invention when the joint is not closed.

[0036] Figure 2a for Figure 1 Sectional view of the inner flange;

[0037] Figure 2b for Figure 2a Side view;

[0038] Figure 2c for Figure 2a A three-dimensional image;

[0039] Figure 3a for Figure 1 Cross-sectional views of Chinese and foreign flanges;

[0040] Figure 3b for Figure 3a Side view;

[0041] Figure 3c forFigure 3a top view of the adapter connector;

[0042] Figure 3d is Figure 3a perspective view of the adapter connector;

[0043] Figure 4a is Figure 1 sectional view of the adapter flange;

[0044] Figure 4b is Figure 4a side view of the adapter connector;

[0045] Figure 4c is Figure 4a front view of the adapter connector;

[0046] Figure 4d is Figure 4a perspective view of the adapter connector;

[0047] Figure 5 is Figure 1 schematic view of the adapter flange with fiber and bundle tube installed;

[0048] Figure 6a is half sectional view of the adapter connector embodiment of the present application after removing the fiber and bundle tube;

[0049] Figure 6b Figure 6a is left view of the adapter connector;

[0050] Figure 6c Figure 6a is right view of the adapter connector;

[0051] Figure 6d Figure 6a is enlarged schematic view of the adapter flange at A;

[0052] Figure 7a Figure 6a is partial sectional view of the adapter flange;

[0053] Figure 7b Figure 7a is left view of the adapter connector;

[0054] Figure 7c Figure 7a is right view of the adapter connector;

[0055] Figure 7d Figure 7a is perspective view of the adapter connector;

[0056] Figure 8 Figure 6a is enlarged schematic view of the adapter flange after closing at B.

[0057]

Reference Signs

[0058] 1 - ceramic pin

[0059] 2-inner flange;

[0060] 201-crimped end;

[0061] 202-first limiting step;

[0062] 203-insert sleeve part;

[0063] 204-anti-rotation single key;

[0064] 3-outer flange;

[0065] 301-closed end;

[0066] 302-threaded connection end;

[0067] 303-anti-rotation key groove;

[0068] 304-observation hole;

[0069] 305-second limiting step;

[0070] 306-insert sleeve cavity;

[0071] 4-0-shaped ring;

[0072] 5-adapting flange;

[0073] 501-fiber adhesive hole;

[0074] 502-bundle tube adhesive hole;

[0075] 503-O-shaped ring groove;

[0076] 504-glue injection groove;

[0077] 505-external thread;

[0078] 506-stop boss;

[0079] 6-bundle tube;

[0080] 7-housing;

[0081] 701-first contact piece hole;

[0082] 702-third limiting step;

[0083] 703-hole structure;

[0084] 704-insertion cavity;

[0085] 705-threaded hole;

[0086] 8-pressing plate;

[0087] 801-second contact piece hole;

[0088] 802 - fourth limit step;

[0089] 9 - contact;

[0090] 10 - screw;

[0091] 11 - optical fiber. DETAILED DESCRIPTION

[0092] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0093] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the scope of protection of the present application.

[0094] It should be noted that similar reference numerals and letters refer to similar items throughout the drawings, and thus, once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings.

[0095] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are merely for the convenience of describing the present application and simplifying the description, and thus cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0096] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0097] The features and performance of the optical fiber airtight contact and adapter connector of the present application will be further described in detail in connection with the following embodiments.

[0098] An embodiment of the optical fiber airtight contact of the present application is shown in Figures 1 to 5 , which is hereinafter referred to as the contact.

[0099] The contact comprises a ceramic pin 1, an inner flange 2, an outer flange 3, an adapter flange 5, and a bundle tube 6. The adapter flange 5 is provided with the fixed optical fiber 11 and the bundle tube 6, and the two ends of the adapter flange 5 are fixedly connected with the outer flange 3. The end of the outer flange 3 is inserted with a pin component, which is movable at the end of the outer flange 3. The pin component comprises the ceramic pin 1 and the inner flange 2, and the ceramic pin 1 is inserted in the inner flange 2, and the inner flange 2 is inserted in the outer flange 3.

[0100] The inner flange 2 is a tubular body, and has a through hole in the inside. One end of the inner flange 2 is a crimping end 201, and the inner wall of the inner flange 2 is provided with a first limiting step 202 for limiting the ceramic pin 1. After the ceramic pin 1 is inserted in the hole of the crimping end 201, the ceramic pin 1 abuts against the first limiting step 202, and the first limiting step 202 blocks the ceramic pin 1 forwardly, so as to ensure that the ceramic pin 1 is inserted in the designed position, and avoid that the ceramic pin 1 is inserted too much, and the hole of the ceramic pin for inserting the optical fiber is compressed by the crimping end 201 and cannot be smoothly inserted into the optical fiber. After the ceramic pin 1 is inserted in place, the crimping end 201 is crimped on the ceramic pin 1 by using a crimping tool, so as to fix the ceramic pin 1 on the crimping end 201; or the hole of the crimping end 201 and the ceramic pin 1 are in interference fit, and the ceramic pin 1 is inserted with great force, so as to fix the ceramic pin 1 on the crimping end 201. The outer wall of the inner flange 2 is provided with a sleeve portion 203, which is an annular boss surrounding the outer wall of the inner flange 2 in the embodiment. The outer wall of the sleeve portion 203 is provided with an anti-rotation single key 204.

[0101] The outer flange 3 is a tubular body with a through hole. One end of the outer flange 3 is a closed end 301, and the other end is a threaded connection end 302 for threaded connection with the adapter flange 5. The inner wall of the hole of the threaded connection end 302 is provided with threads. The hole wall of the closed end 301 is relatively thin, facilitating closing processing. After the closed end 301 is closed, a sleeve cavity 306 is formed. The inner wall of the outer flange 3 close to the closed end 301 is provided with a second limiting step 305. The inner flange 2 is inserted into one side of the closed end 301, and the sleeve part 203 abuts against the second limiting step 305. At this time, the crimping end 201 of the inner flange 2 is located outside the outer flange 3. After the closed end 301 is closed, the sleeve part 203 is placed in the sleeve cavity 306, which can prevent the sleeve part 203 from coming out of the outer flange 3, and further prevent the inner flange 2 from coming out of the outer flange 3. At the same time, the sleeve part 203 has a radial gap between the inner wall of the outer flange 3 close to the closed end 301, and an axial gap between the inner wall of the closed end 301 and the second limiting step 302 when the sleeve part 203 abuts against the second limiting step 305. The sleeve part 203 has a space for movement (sliding or swinging, radial movement) between the closed end 301 and the second limiting step 302, and the inner flange 2 can move at the end of the outer flange 3.

[0102] The closed end 301 of the outer flange 3 is provided with an anti-rotation key groove 303. When the inner flange 2 is inserted into the outer flange 3, the anti-rotation key 204 is inserted into the anti-rotation key groove 303. When the inner flange 2 moves, the anti-rotation key 204 moves in the anti-rotation key groove 303 and prevents the inner flange 2 from rotating in the outer flange 3.

[0103] The wall close to the closed end 301 of the outer flange 3 is provided with an observation hole 304 for observing whether the inner flange 2 is inserted in place. When it is observed that the insertion is in place, the closed end 301 can be closed using a closing tool to avoid the closed end 301 being pressed tightly on the sleeve part 203 when closing without being inserted in place, thereby avoiding that the inner flange 2 has no movement space. In this embodiment, two observation holes 304 are symmetrically arranged on the outer flange 3, which facilitates observation from any side during installation.

[0104] The adapter flange 5 is a tubular body, which is provided with a fiber bonding hole 501 in the middle of the inner part, and both ends are provided with a bundle tube bonding hole 502 which communicates with the fiber bonding hole 501. The fiber bonding hole 501 is used to pass the optical fiber 11 and is fixed by glue injection. The bundle tube bonding hole 502 is used to pass the bundle tube 6 and the optical fiber 11, and the bundle tube 6 is sleeved on the optical fiber 11. The optical fiber 11, the bundle tube 6 and the adapter flange 5 are bonded and fixed after the glue is cured. After the optical fiber 11 is sealed and fixed in the adapter flange 5, the end of the bundle tube 6 is bonded and fixed in the bundle tube bonding hole 502. The bundle tube 6 is also passed through the corresponding outer flange 3, and the other end is bonded and fixed in the hole of the inner flange 2. The optical fiber 11 is passed through the bundle tube 6 in the inner flange 2 and is passed through the ceramic pin 1. When the pin component is moved, the bundle tube 6 and the optical fiber 11 are moved and deformed in the outer flange 3. The through hole of the outer flange 3 provides a moving space for the optical fiber 11 and the bundle tube 6.

[0105] The outer wall of the adapter flange 5 is axially provided with an O-ring groove 503 and a glue injection groove 504. When the contact is inserted into the adapter connector, the O-ring is nested in the O-ring groove 503 to achieve sealing between the contact and the adapter connector, or glue is injected into the glue injection groove 504 to achieve sealing and bonding with the adapter connector. The outer wall of the both ends of the adapter flange 5 is provided with an external thread 505 which is used to be screwed with the internal thread of the threaded connection end 302 of the outer flange 3 to fix the outer flange 3 on the adapter flange 5. In this embodiment, the O-ring groove 503 and the glue injection groove 504 are distributed on the stop boss 506 of the outer wall of the adapter flange 5. The stop boss 506 is an annular boss which protrudes from the outer wall of the adapter flange 5.

[0106] The assembly sequence of the contact is as follows:

[0107] a. The ceramic pin 1 is pressed into the inner flange 2 to form a pin component, and the cavity in the pin component is filled with glue.

[0108] b. The bare optical fiber is passed through the adapter flange 5, then the cavity in the adapter flange 5 is filled with glue, then the bundle tube 6 is passed through the left and right ends of the adapter flange 5, and the bundle tube 6 is sleeved on the optical fiber 11. The adapter flange 5, the optical fiber 11 and the bundle tube 6 are bonded together after the glue is cured, as shown in FIG. 6. Figure 5

[0109] c. The outer flange 3 is installed on the left and right ends of the adapter flange 5 (through threaded connection) and is tightened;

[0110] d. The pin component is passed through the closed end 301 of the outer flange 3, and the optical fiber 11 and the bundle tube 6 are passed through the pin component. After the glue in the pin component is cured, the optical fiber 11, the bundle tube 6 and the pin component are fixed; ​

[0111] e. The outer flange plate 3 is closed, and the pin component is limited in the closed end 301 of the outer flange plate 3; when closed, the anti-rotation single key 204 on the inner flange plate 2 is matched with the anti-rotation key groove 303 of the outer flange plate 3, and after closing, the pin component has a certain movement space relative to the outer flange plate 3.

[0112] f. The two ends of the contact piece are polished. That is, the contact piece is completed.

[0113] The above assembly sequence can be adjusted according to specific conditions.

[0114] In the second embodiment of the optical fiber airtight contact piece, the outer flange plate 3 and the adapter flange plate 5 in the first embodiment are integrally arranged, and the structure of the adapter flange plate 5 is integrated on the opposite ends of the two outer flange plates 3. The outer flange plate 3 and the adapter flange plate 5 can also be fixedly connected by gluing or other connection methods.

[0115] In the third embodiment of the optical fiber airtight contact piece, on the basis of the first embodiment, the outer wall of the adapter flange plate 5 can be provided with only the O-ring groove 503 or only the glue injection groove 504.

[0116] In the fourth embodiment of the optical fiber airtight contact piece, on the basis of the first embodiment, the observation hole 304 of the outer flange plate 3 can be removed, and the pin component is limited by the second limiting step 305.

[0117] In the fifth embodiment of the optical fiber airtight contact piece, on the basis of the first embodiment, the anti-rotation single key 204 on the inner flange plate 2 and the anti-rotation key groove 303 on the outer flange plate 3 can be removed, and the matching structure of the inner flange plate 2 and the outer flange plate 3 is replaced by a non-rotating body, so as to stop rotation of the two.

[0118] In the sixth embodiment of the optical fiber airtight contact piece, on the basis of the first embodiment, the stop boss 506 on the adapter flange plate 3 can be removed, and the structure on the adapter connector is relied on to fix the contact piece.

[0119] In other embodiments of the optical fiber airtight contact piece, only the outer flange plate 3, the inner flange plate 2, the ceramic pin 1, the optical fiber 11, and the bundle tube 6 can be provided, the optical fiber 11 and the bundle tube 6 are fixedly connected to one end of the outer flange plate 3, and the pin component is inserted into the other end, and the contact piece can be used only as a plug connector or a socket connector, wherein the ceramic pin 1 can be replaced by a ceramic sleeve.

[0120] An embodiment of the adapter connector is shown in the figure. Figures 6a to 8 The adapter connector includes a shell 7, a pressing plate 8, a contact piece 9, and a screw 10, and the contact piece 9 adopts the optical fiber airtight contact piece.

[0121] The middle position of the inner cavity of the shell 7 is a hole structure 703 which is integrally arranged on the shell 7, and a plurality of first contact hole 701 for inserting the contact 9 are arranged on the hole structure 703, and the inner wall of the first contact hole 701 is provided with a third limiting step 702, and after the contact 9 is inserted into the first contact hole 701 from one end of the shell 7, the stop boss 506 on the adapter flange plate 5 abuts against the third limiting step 702, indicating that the contact 9 is inserted in place.

[0122] The inner cavity of the shell at both ends of the hole structure 703 is a plug-in cavity 704, and after the contact 9 is inserted in place, the end of the outer flange plate 3 and the pin component are located in the plug-in cavity 704.

[0123] The middle position of the end face of the hole structure 703 is provided with a threaded hole 705, and after the contact 9 is inserted in place, the pressing plate 8 is pressed on the end face of the hole structure 703, and then the screw 10 is screwed into the threaded hole 705 through the through hole in the center of the pressing plate 8, and the pressing plate 8 is fixed in the shell 7, so that the contact 9 is fixed in the first contact hole 702.

[0124] The pressing plate 8 is provided with a plurality of second contact holes 801 corresponding to the first contact holes 701, and the inner wall of the second contact hole 801 is provided with a fourth limiting step 802. After the contact 9 is inserted in place in the shell 7 and the pressing plate 8 is installed, the end of the outer flange plate 3 and the pin component are inserted into the corresponding second contact hole 801, and the ceramic pin 1 protrudes from the first contact hole 801 and is used for plugging with the ceramic sleeve of the plug, and the fourth limiting step 802 has a stop effect on the closed end 301 of the outer flange plate 3. When the O-ring 4 is arranged in the O-ring groove 503 of the adapter flange plate 5 to seal between the contact and the shell 7, the fourth limiting step 802 of the pressing plate 8 can prevent the contact 9 from falling off. When the sealing and fixing with the shell 7 is realized by injecting glue into the glue injection groove 504 of the adapter flange plate 5, the pressing plate 8 can enhance the limiting and fixing of the contact 9. The contact 9 is limited and fixed in the first contact hole 701 and the second contact hole 801 by the third limiting step 702 and the fourth limiting step 802, so as to ensure that the contact 9 is firmly installed in the shell 7.

[0125] In this embodiment, the adapter connector is connected with the corresponding plug connector through the threads on the outer walls of the two end portions of the shell 7, and in other embodiments, the adapter connector can also be connected with the corresponding plug connector in a bayonet type connection, a push-pull type connection or other connection modes.

[0126] The assembly sequence of the adapter connector is as follows:

[0127] a. Put the O-ring 4 on the O-ring groove 503 of the adapter flange plate 5 of the contact (or fill the sealing glue in the glue injection groove 504, or set the O-ring 4 and the glue injection at the same time);

[0128] b. The contact 9 is installed into the first contact hole 701 of the shell 7, the stop boss 506 on the adapter flange 5 abuts against the third limiting step 702, and the pressure plates 8 are installed at both ends of the shell 7;

[0129] c. The pressure plates 8 are fastened by the screws 10, the pressure plates 8 block the closed end 301 of the outer flange 3 of the contact 9, and then the glue between the contact 9 and the shell 7 is cured, so that the installation of the adapter connector is completed (if only the O-ring 4 is used for assembly, the glue curing is not needed).

[0130] The current air-tight adapter connector needs to bond and fix the contact, at least one of the plug-in parts at both ends of the contact cannot move, so that the ceramic sleeve at the plug end and the ceramic plug-in part of the adapter connector are rigidly connected and cannot float during the insertion of the plug connector into the adapter connector, and the ceramic plug-in part and the ceramic sleeve are damaged during the insertion and locking of the plug and the adapter connector, which causes unstable loss, affects the optical performance, and even causes the ceramic sleeve at the plug end to break.

[0131] The contact structure of the application limits the plug-in parts at both ends and the corresponding outer flange 3 in a closed manner, the plug-in parts can move at the end of the outer flange 3, the outer flange 3 is threadedly connected with the adapter flange 5, and the outer flange 3 and the adapter flange 5 are fixed relative to the shell 7 by the pressure plates 8, the limiting structure in the shell or the gluing manner, so that the plug-in parts can swing relative to the adapter connector, when the ceramic sleeve and the ceramic plug-in part are inserted and cut, the ceramic plug-in part swings to reduce the shear force on the ceramic sleeve and the ceramic plug-in part, and damage to the insertion structure is avoided, thereby avoiding affecting the optical performance; the adapter flange 5 realizes the air-tight function by the O-ring 4 or glue injection between the adapter flange 5 and the shell 7, and realizes the air-tight function with the optical fiber 11 by gluing, which not only avoids damage to the insertion structure, but also improves the optical performance of the product and ensures air-tightness. The contact of the application can be installed in a variety of connection forms of the socket shell, such as the socket with a threaded connection structure, a bayonet connection structure, a push-pull connection structure and the like.

[0132] Although the embodiments of the application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A fiber optic hermetic seal contact, characterized by: The application relates to a connector, which comprises a transition flange (5), outer flanges (3) arranged at the two ends of the transition flange (5), and pin components inserted into the ends of the outer flanges (3), wherein the pin components comprise inner flanges (2) and ceramic pins (1) inserted into the inner flanges (2), the outer wall of the inner flange (2) is provided with a sleeve part (203), the end of the outer flange (3) is a closed end (301), the closed end (301) is closed to form a sleeve cavity (306) at the end of the outer flange (3), the sleeve part (203) is arranged in the sleeve cavity (306) after the inner flange (2) is inserted into the end of the outer flange (3), so that the pin component is movably arranged at the end of the outer flange (3); the transition flange (5) is provided with an optical fiber (11), the inside of the transition flange (5) is provided with a gas-tight sealing contact part of the optical fiber, the optical fiber (11) is positioned, and the two ends of the optical fiber are arranged in the inner holes of the ceramic pins (1) after passing through the corresponding outer flanges (3) and inner flanges (2).

2. An optical fiber gas-tight contact according to claim 1, characterized in that: The transition flange (5) is provided with an optical fiber bonding hole (501) at the middle position of the inside, and is provided with a bundle tube bonding hole (502) in communication with the optical fiber bonding hole (501) at the two ends, the optical fiber (11) is arranged in the optical fiber bonding hole (501) and the bundle tube bonding hole (502), and the bundle tube (6) is arranged in the bundle tube bonding hole (502).

3. A fiber optic hermetic seal contact according to claim 2, wherein: The transition flange (5) is provided with the optical fiber bonding hole (501) and the bundle tube bonding hole (502), the optical fiber (11) is arranged in the optical fiber bonding hole (501) and the bundle tube bonding hole (502), the bundle tube (6) is arranged in the bundle tube bonding hole (502) after glue injection, the air tightness of the transition flange (5) is checked after the glue is solidified, and the outer flanges (3) are installed at the two ends of the transition flange (5) after the air tightness is qualified.

4. An optical fiber gas-tight contact according to claim 3, characterized in that: The ceramic pins (1) are inserted into the inner flanges (2), the glue is injected into the pin components, the inner flanges (2) are inserted into the ends of the outer flanges (3) after the glue is injected, meanwhile, the optical fiber (11) and the bundle tube (6) sleeved outside the optical fiber (11) are inserted into the pin components, wherein the optical fiber (11) is arranged in the ceramic pins (1) and the inner flanges (2), the bundle tube (6) is arranged in the inner flanges (2), and the bundle tube (6) and the optical fiber (11) are fixed after the glue is solidified.

5. The optical fiber gas-tight contact of claim 1, wherein: The outer wall of the transition flange (5) is provided with an O-ring groove (503) and / or a glue injection groove (504).

6. A fiber optic hermetic seal contact according to any one of claims 1 to 5, wherein: The end of the outer flange (3) away from the closed end (301) is a threaded connection end (302) used for being screwed with the transition flange (5).

7. The optical fiber gas-tight contact of claim 1, wherein: The inner wall of the inner flange (2) is provided with a first limiting step (202) used for stopping the ceramic pins (1) in front.

8. The optical fiber gas-tight contact of claim 1, wherein: The outer wall of the sleeve part (203) is provided with an anti-rotation single key (204), and correspondingly, the end of the outer flange (3) is provided with an anti-rotation key groove (303) for the anti-rotation single key (204) to be inserted.

9. The optical fiber gas-tight contact of claim 1, wherein: The wall body of the outer flange (3) is provided with an observation hole (304) used for observing whether the inner flange (2) is inserted in place.

10. A patch connector comprising a housing (7), a contact (9) plugged into a contact hole (701) in the housing (7), characterized in that: The contact piece (9) is the optical fiber airtight sealing contact piece as claimed in any one of claims 1-9, after the contact piece (9) is inserted into the shell (7), the end of the outer flange (3) and the pin component are located in the insertion cavity (704), the bottom of the insertion cavity (704) is provided with the pressing plate (8), the insertion end of the pin component extends out of the pressing plate (8), the second contact piece hole (801) in the pressing plate (8) for the pin component to pass through is provided with the fourth limiting step (802) for stopping the end of the outer flange (3).

11. The adapter connector of claim 10, wherein: The inner wall of the first contact piece hole (701) is provided with the third limiting step (702), and the outer wall of the contact piece is provided with the stopping boss (506) for abutting against the third limiting step (702).

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