CN210894780U - Neutral watertight optical fiber connector - Google Patents
Neutral watertight optical fiber connector Download PDFInfo
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- CN210894780U CN210894780U CN201922115716.7U CN201922115716U CN210894780U CN 210894780 U CN210894780 U CN 210894780U CN 201922115716 U CN201922115716 U CN 201922115716U CN 210894780 U CN210894780 U CN 210894780U
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Abstract
The utility model relates to a neutral watertight fiber connector, which comprises a free end and a fixed end, wherein the front ends of the free end and the fixed end are butted, the free end and the fixed end respectively comprise an inner shell, the outer peripheral surface of the front end of the inner shell is provided with threads, and an outer shell, which is coaxially assembled outside the inner shell and can axially move and circumferentially rotate relative to the inner shell; the thread notches distributed along the circumference and extending axially are not shorter than the thread length, so that the part provided with the external thread at the front end of the inner shell is divided into thread blocks matched with the thread notches, when the connector is inserted, the thread blocks on the inner shell at any end are inserted into the thread notches at the other end, and the internal thread at the front end of the outer shell at any end can be meshed with the thread blocks on the inner shell at the other end to realize locking. The utility model discloses utilize the relative position and the angle differentiation structure of neutral thread breach and casing, make two arbitrary connectors pass through the quick butt joint of screw thread, form the neutral connector to this kind of compact structure can reduce the volume and the weight of connector.
Description
Technical Field
The utility model relates to a connector technical field, concretely relates to neutral watertight fiber connector.
Background
The optical fiber connector for the field component of the existing optical communication system in the market is usually a fixed end connector and is arranged on a device panel, and the free end connector and the fixed end connector adopt bayonet connection, pin connection and thread connection structures to meet the requirements of mechanical and environmental adaptability; the requirement of outdoor environment-resistant sealing performance of the connector is met through the sealing element; the fixed end connector is provided with a contact pin structure contact element, the free end connector is provided with a jack structure contact element, and the contact pin and the jack contact element realize end face alignment through the ceramic sleeve so as to achieve transmission of optical fiber signals. However, the connection mode of the optical fiber connector is non-neutral, and a long-distance optical transmission communication system cannot be quickly constructed by using a multi-disc component like a neutral connector; the sealing element design of the optical fiber connector can meet the requirement of normal outdoor environmental sealing resistance but cannot meet the requirement of deep water environmental sealing resistance; the contact elements of the pin and jack structures arranged on the insertion end faces of the fixed end connector and the free end connector still need to be processed respectively, and along with the application of similar structures to high-density multi-core connection, the production complexity and the cost of the connector are not obviously improved compared with those of the traditional connector.
Disclosure of Invention
The utility model aims at providing a novel neutral watertight fiber connector of structure makes it be equipped with the butt joint along the interior casing of the opening of circumference distribution through the front end, makes the external screw thread that forms the axial dislocation to inserting of interior casing thread piece and opening in two links, then realizes locking through having the external screw thread fit on internal casing and the looks remote site of internal screw thread, has simple structure, connects characteristics reliable, convenient to use.
The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme. According to the utility model, the neutral watertight optical fiber connector comprises a free end and a fixed end which are butted at the front ends, wherein the free end and the fixed end respectively comprise an inner shell with threads on the outer peripheral surface of the front end and an outer shell which is coaxially assembled outside the inner shell and can axially move and circumferentially rotate relative to the inner shell; the thread notches distributed along the circumference and extending axially are not shorter than the thread length, so that the part provided with the external thread at the front end of the inner shell is divided into thread blocks matched with the thread notches, when the connector is inserted, the thread blocks on the inner shell at any end are inserted into the thread notches at the other end, and the internal thread at the front end of the outer shell at any end can be meshed with the thread blocks on the inner shell at the other end to realize locking.
The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.
In the neutral watertight optical fiber connector, the length of the axial extension of the thread notch is twice the length of the axial extension of the thread block, so that the thread blocks of the inner housings at the two ends are completely staggered when the free end and the fixed end are plugged, and the outer housing at each end is only engaged and locked with the thread block on the inner housing at the other end.
In the neutral watertight optical fiber connector, the front end of the outer housing is internally provided with a stepped step for cooperating with a step surface on the outer periphery of the inner housing to limit the forward movement distance of the outer housing.
In the neutral watertight optical fiber connector, the plurality of thread notches have different shapes, so that the connector has blind plugging and misplug prevention functions, and primary guiding during plugging of the connector is realized.
The neutral watertight optical fiber connector may further comprise a sealing member disposed between the free end inner housing and the fixed end inner housing at the insertion end face for preventing external liquid from entering the connector from the insertion end face.
In the neutral watertight optical fiber connector, the rear end of the inner housing is further coaxially assembled with a rear housing, and a ring groove for assembling a sealing member for sealing the inner housing and the rear housing is formed by steps on the inner side of the inner housing and steps on the outer periphery of the rear housing.
In the neutral watertight optical fiber connector, the outer shell is tightly assembled on the rear shell through the annular boss in the middle of the outer shell, the front end face of the annular boss is matched with the tail end face of the inner shell to limit the forward movement distance of the outer shell, and the rear end face of the annular boss is matched with the front end face of the tail nut at the tail of the rear shell to limit the backward movement distance of the outer shell.
In the neutral watertight optical fiber connector, the front end of the neutral watertight optical fiber connector is provided with a hole for assembling a pin component at the front end of the neutral optical fiber contact member, and a hole position for inserting or fixing a metal sleeve which is sleeved outside the pin component and of which the front end extends out of the inner shell is also arranged outside the pin component mounting hole; the same inner shell is internally sleeved with a metal sleeve and the contact pin components which are not sleeved with the metal sleeve are arranged in a mirror symmetry mode.
In the neutral watertight optical fiber connector, a ceramic sleeve is disposed inside the metal sleeve.
In the neutral watertight fiber connector, the front pin member of the neutral fiber contact member is a standard LC pin member.
Compared with the prior art, the utility model obvious advantage and beneficial effect have. Borrow by above-mentioned technical scheme, the utility model discloses neutral watertight fiber connector can reach comparable technical advancement and practicality to have the industrial wide use value, it has following advantage at least:
1) the front end of the inner shell of the utility model is provided with a neutral thread gap type connecting structure, and the relative position structural design of the neutral thread gap and the shell can ensure that any two same connectors are mutually butted through the thread gap to form a neutral thread type connector; after any two same connectors are guided to be in butt joint, the internal thread of the outer shell of the connector can be meshed with the external thread at the front end of the inner shell of the other connector, so that the threaded quick connection of the connectors is realized, and the stable transmission of optical signals of the connectors is ensured.
2) The utility model discloses the relative position and the angle differentiation structure of neutral thread breach and casing are utilized to the product, the mirror symmetry structure of neutral fiber optic contact spare, metal bushing part multicore hole site contact arrangement, guide pin hole, guide pin symmetrical type structure etc. this type structural design can make arbitrary two connectors dock through the screw thread fast, form the neutral connector to this kind of compact structure can reduce the volume and the weight of connector;
3) the connector of the utility model is provided with sealing elements on the plugging end surface, inside the connector and between the connector tail part and the optical cable, which can meet the requirements of 15m water depth and 24h tightness of the connector;
4) the utility model discloses the connector adopts the neutral fiber contact, is convenient for install, dismantles, maintains, is favorable to reducing production complex technology and manufacturing use cost.
Drawings
Fig. 1 is a cross-sectional view of one end of the neutral watertight fiber connector of the present invention;
fig. 2 is a schematic perspective view of one end of the neutral watertight fiber connector according to the present invention;
FIG. 3 is a partial cross-sectional view of FIG. 2;
FIG. 4 is a schematic diagram of the pre-splicing butt joint of the neutral watertight fiber connector according to the present invention;
fig. 5 is a schematic diagram of the insertion state of the neutral watertight fiber connector of the present invention.
[ description of main element symbols ]
1: inner shell
2: first seal ring
3: outer casing
4: pressing plate
5: second seal ring
6: rear shell
7: third seal ring
8: tail nut
9: fourth seal ring
10: gasket ring
11: compression ring
12: double-wall heat-shrinkable tube
13: neutral optical fiber contact
14: metal sleeve part
15: guide pin hole
16: guide pin
17: thread gap
18: standard LC pin component
19: LC spring
20: thread block
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to specific embodiments, structures, features and effects of the neutral watertight fiber connector according to the present invention with reference to the accompanying drawings and preferred embodiments.
Please refer to fig. 1-5, which are schematic structural diagrams of each part of the neutral watertight fiber connector of the present invention, the connector includes a free end and a fixed end with front end butt jointed, the free end and the fixed end include an inner shell 1 with a thread on the outer peripheral surface of the front end and an outer shell 3 coaxially assembled outside the inner shell 1 and capable of moving axially and rotating circumferentially relative to the inner shell 1, the part of the inner shell 1 with external threads is further divided into thread blocks 20 adapted to the thread blocks by a plurality of thread gaps 17 with axially extending length not shorter than the thread length distributed along the circumference, so that when the free end and the fixed end are plugged, the thread blocks on the inner shell of the free end are inserted into the thread gaps on the inner shell of the fixed end, the thread blocks on the inner shell of the fixed end are located in the thread gaps of the inner shell of the free end, and finally the outer shell 2 of the free end and the fixed end is rotated to be engaged with The locking of two connecting ends is realized through the engagement of the thread blocks on the end inner housings.
The embodiment of the utility model provides an in, the inside notch cuttype step that sets up of shell body 3 front end is used for spacing with the step face cooperation of interior casing 1 periphery, and shell body axial displacement can be realized spacing to the inside step of shell body 3 when two connectors are connected, the shell body female connection of being convenient for judgement that targets in place.
In the embodiment of the present invention, the length of the axial extension of the thread notch 17 is twice the length of the axial extension of the thread block 20, so that the thread blocks of the shells at both ends are completely staggered when the free end and the fixed end are plugged, and the outer shell at each end is only engaged and locked with the thread block on the shell at the other end, but not limited thereto. In this embodiment, when the internal threads of the outer shell are connected to the thread block at the other end, the inner step of the outer shell and the outer step of the inner shell are stopped and limited, so as to prevent the internal threads at the front end of the outer shell 3 of the connector from being engaged with the external threads at the front end of the inner shell 1.
In the embodiment of the utility model, the screw thread breach 17 has different shapes, only can realize inserting when making the connection connect the whole correspondence of screw thread breach and the screw thread piece of adaptation from this, makes the connector have blind insertion, mistake proofing and inserts the function, realizes the guide of connector one-level simultaneously.
Be equipped with first sealing washer 2 on the anterior plug-in terminal surface of interior casing 1, when the connector both ends through the butt joint of the screw thread breach structure of interior casing 1, after the internal thread connection locking of 1 external screw thread of interior casing and the 3 internal thread connections of other end shell body of one end, contact between two interior casing 1 terminal surfaces, two first sealing washers 2 extrusion each other of terminal surface can ensure butting connector's sealing performance.
In the embodiment of the present invention, the rear end of the inner housing 1 is coaxially assembled with the rear housing 6, in the embodiment of the present invention, the inner housing 1 is connected with the front end external thread of the rear housing 6 through the matching of the internal thread of the rear end of the inner housing 1, but not limited thereto. And a second sealing ring 5 for realizing the sealing between the inner shell 1 and the rear shell 6 is also arranged between the inner shell and the rear shell. Preferably, the second sealing ring 5 is pressed in an annular groove surrounded by an inner side step of the inner shell 1 and an outer periphery step of the rear shell 6, but is not limited thereto.
The middle part of the outer shell 3 is provided with an annular boss, the inner peripheral surface of the annular boss is tightly sleeved on the outer peripheral surface of the rear shell 6, the front end surface of the annular boss is matched with the tail end surface of the inner shell 1 to realize the limitation of the forward movement distance of the outer shell 2 relative to the inner shell 1, and the rear end surface is matched with the front end surface of the tail nut 8 connected with the tail part of the rear shell 6 to realize the limitation of the backward movement distance of the outer shell.
The rear shell 6 is internally provided with a contact element mounting hole for mounting a neutral optical fiber contact element 13, the inner shell 1 is internally provided with a hole for a pin inserting part 18 at the front end of the contact element to pass through, a guide pin mounting hole for assembling a guide pin 16 and a guide pin hole 15 matched with the guide pin 16, the guide pin and the guide pin hole are arranged in a mirror symmetry manner, and when primary guidance of any two identical connector thread gaps is completed, the guide pin hole 15 and the guide pin 16 can be arranged in a symmetrical structure to complete neutral butt joint, so that secondary guidance of the connector is realized.
The front end of the inner shell 1 is also provided with a hole site for sleeving the pin insertion part 18 to ensure the optical alignment between the neutral optical fiber contacts 13 and realize the insertion or fixation of the metal sleeve 14 for the three-stage guiding of the connector. The metal sleeve 14 and the pin member 18 without the metal sleeve 14 are arranged in mirror symmetry in the same inner housing. Half of the metal sleeve 14 is located in the inner shell, and the other half extends out of the inner shell for matching with a pin component of which the other end is not sleeved with the metal sleeve. Preferably, a ceramic sleeve commonly used for optical fiber connectors is disposed inside the metal sleeve 14, so as to ensure optical alignment between the neutral optical fiber contacts 13 and ensure stable transmission of optical fiber signals of the connectors.
In the embodiment of the present invention, the neutral optical fiber contact 13 is fixed in the inner housing by the pressing plate 14 inside the tail end of the inner housing 1. The utility model discloses neutral fiber contact 13 comprises standard LC contact pin part 18, LC spring 19, this product adopts the neutral fiber contact, be different from traditional fiber connector contact pin, jack structure contact configuration, when being applied to high density multicore connection along with similar structure, its production complex technology has showing the improvement with the relative traditional connector of manufacturing use cost, the standard LC contact pin part 17 that this neutral fiber contact 13 adopted simultaneously, LC spring 18 are market common, the purchase channel is stable, the purchase cost is low, contact grinding process is ripe. Meanwhile, the ceramic sleeve commonly used for the optical fiber connector is arranged in the metal shell part 14, so that the end face optical alignment of the neutral optical fiber contact piece 13 can be realized, and the stable transmission of the optical fiber signal of the connector is ensured.
And a third sealing ring 7, a fourth sealing ring 9, a gasket 10, a pressing ring 11, a double-wall heat-shrinkable tube 12 and the like are further arranged between the rear shell 6 and the tail nut 8, and are designed for ensuring the sealing performance and the tensile performance of the optical cable between the tail of the connector and the optical cable, so that the normal work of the connector in a deepwater environment can be met. The utility model discloses a set up respectively in the first sealing washer 2 of terminal surface before the connector, inside and afterbody, second sealing washer 5, third sealing washer 7, fourth sealing washer 9, packing ring 10, clamping ring 11, double-walled pyrocondensation pipe 12 etc. guarantee that the connector inserts between the terminal surface, between the inside spare part of connector, sealing performance, optical cable tensile strength between connector afterbody and the optical cable, can satisfy the resistant 15m depth of water of connector, 24 h.
The utility model discloses an including the casing front end set up be used for along the screw thread in its outside cut apart into a plurality of screw thread blocks along the circumference axial extension length be greater than the screw thread set up the certain angle of rotation back of length can the opening of the above-mentioned screw thread block of adaptation to make behind the butt joint of casing in free end and stiff end, corresponding screw thread block and opening are inserted and are closed and realize circumference spacing, then realize locking through the meshing that is equipped with internal screw thread shell body separately and looks remote site interior casing external screw thread, and has simple structure, the convenient characteristics are dismantled in the installation.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention, but all the modifications, changes and modifications of the above embodiments by the technical spirit of the present invention are within the scope of the present invention.
Claims (10)
1. The utility model provides a neutral watertight fiber connector, includes the free end and the stiff end of front end butt joint, its characterized in that: the free end and the fixed end both comprise an inner shell with threads on the outer peripheral surface of the front end and an outer shell which is coaxially assembled outside the inner shell and can axially move and circumferentially rotate relative to the inner shell;
the thread notches distributed along the circumference and extending axially are not shorter than the thread length, so that the part provided with the external thread at the front end of the inner shell is divided into thread blocks matched with the thread notches, when the connector is inserted, the thread blocks on the inner shell at any end are inserted into the thread notches at the other end, and the internal thread at the front end of the outer shell at any end can be meshed with the thread blocks on the inner shell at the other end to realize locking.
2. A neutral watertight fiber optic connector according to claim 1, wherein: the length of the thread notch extending along the axial direction is twice of the length of the thread block extending along the axial direction, so that the thread blocks of the inner shells at the two ends are completely staggered when the free end and the fixed end are plugged, and the outer shell at each end is only meshed and locked with the thread block on the inner shell at the other end.
3. A neutral watertight fiber optic connector according to claim 1 or 2, wherein: the inner part of the front end of the outer shell is provided with a step-shaped step which is matched with the step surface of the outer periphery of the inner shell to limit the forward moving distance of the outer shell.
4. A neutral watertight fiber optic connector according to claim 1, wherein: wherein the plurality of thread notches have different shapes.
5. A neutral watertight fiber optic connector according to claim 1, wherein: wherein the free end and the fixed end inner shell are provided with sealing members at the insertion end faces for preventing external liquid from entering the connector from the insertion part.
6. A neutral watertight fiber optic connector according to claim 1, wherein: the rear end of the inner shell is also coaxially assembled with a rear shell, and a step on the inner side of the inner shell and a step surface on the periphery of the rear shell form a ring groove for assembling a sealing element for realizing the sealing of the inner shell and the rear shell.
7. A neutral watertight fiber optic connector according to claim 6, wherein: the outer shell is tightly assembled on the rear shell through the annular boss in the middle of the outer shell, the front end face of the annular boss is matched with the end face of the tail part of the inner shell to limit the forward movement distance of the outer shell, and the rear end face of the annular boss is matched with the front end face of the tail nut at the tail part of the rear shell to limit the backward movement distance of the outer shell.
8. A neutral watertight fiber optic connector according to claim 1, wherein: the front end of the neutral optical fiber contact element is provided with a hole for assembling a pin component at the front end of the neutral optical fiber contact element, and a hole position for inserting or fixing a metal sleeve which is sleeved outside the pin component and the front end of which extends out of the inner shell is also arranged outside the pin component mounting hole; the same inner shell is internally sleeved with a metal sleeve and the contact pin components which are not sleeved with the metal sleeve are arranged in a mirror symmetry mode.
9. A neutral watertight fiber optic connector according to claim 8, wherein: wherein the metal sleeve is internally provided with a ceramic sleeve.
10. A neutral watertight fiber optic connector according to claim 8, wherein: the front end pin component of the neutral optical fiber contact element is a standard LC pin component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922115716.7U CN210894780U (en) | 2019-11-29 | 2019-11-29 | Neutral watertight optical fiber connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922115716.7U CN210894780U (en) | 2019-11-29 | 2019-11-29 | Neutral watertight optical fiber connector |
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| Publication Number | Publication Date |
|---|---|
| CN210894780U true CN210894780U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922115716.7U Active CN210894780U (en) | 2019-11-29 | 2019-11-29 | Neutral watertight optical fiber connector |
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| CN (1) | CN210894780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114966994A (en) * | 2022-05-20 | 2022-08-30 | 中航光电科技股份有限公司 | FC type optical fiber connector assembly, FC adapter and FC connector plug thereof |
-
2019
- 2019-11-29 CN CN201922115716.7U patent/CN210894780U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114966994A (en) * | 2022-05-20 | 2022-08-30 | 中航光电科技股份有限公司 | FC type optical fiber connector assembly, FC adapter and FC connector plug thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 211200 room 7007, building C, No. 288, Qinhuai Avenue, yongyang street, Lishui District, Nanjing, Jiangsu Province Patentee after: Jiangsu Naguang Communication Technology Co.,Ltd. Address before: Room 801, building 3, No.1, Fenghua Road, high tech Zone, Luoyang area, China (Henan) pilot Free Trade Zone, Luoyang City, Henan Province 471000 Patentee before: Luoyang Saiyan Photoelectric Technology Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A neutral watertight optical fiber connector Effective date of registration: 20220627 Granted publication date: 20200630 Pledgee: Nanjing Branch of Jiangsu Bank Co.,Ltd. Pledgor: Jiangsu Naguang Communication Technology Co.,Ltd. Registration number: Y2022980009064 |