CN215264119U

CN215264119U - Neutral detachable single-mode beam expanding optical fiber connector terminal

Info

Publication number: CN215264119U
Application number: CN202121561876.5U
Authority: CN
Inventors: 高阳; 李凯; 王可
Original assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Current assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-12-21
Anticipated expiration: 2031-07-09

Abstract

The utility model relates to a single mode fiber connector terminal technical field, a neutral can be dismantled single mode and expand a beam fiber connector terminal, including interior casing, shell body, crimping ring, spring and the subassembly that expands, interior casing main part is the tubulose, interior casing head has first boss on the outer peripheral face, and interior casing head is overlapped and is equipped with the shell body, is fixed with the crimping ring on the tail section, the length of shell body, crimping ring is all less than interior casing, has the space between shell body inner peripheral surface and the interior casing outer peripheral face, be provided with the spring between interior casing and the shell body, the spring suit is on interior casing, and its one end is with the inner peripheral surface looks butt of shell body, and the other end is with first boss looks butt, the spring is used for providing butt joint force when the butt joint, the shell body can be followed axial displacement and by first boss and crimping ring restriction its migration range, the beam expanding assembly is fixedly connected with the inner shell along the axial direction, and the tail section of the outer shell is provided with a clamping jaw platform.

Description

Neutral detachable single-mode beam expanding optical fiber connector terminal

Technical Field

The utility model relates to a single mode fiber connector terminal technical field, concretely relates to neutral can be dismantled single mode and expand beam splitter fiber connector terminal.

Background

Physical contact is a main connection mode of a light transmission mode of an optical fiber connector, in the prior art, because an optical fiber of a physical contact type connector is in contact with the end face of the optical fiber, when the connector is vibrated, the end face of the optical fiber is continuously rubbed, the end face of the optical fiber is damaged, the insertion loss of the connector is increased, and the connector cannot be applied to the field with frequent vibration; in addition, the connector is repeatedly butted for too many times, the end face of the optical fiber is damaged, the loss of the connector is increased until signal transmission cannot be realized, and therefore the mechanical life of the physical contact type optical fiber connector is short.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a realize that single mode expands and expands that fiber optic connector terminal can dismantle, it has advantages such as improvement connector maintenance efficiency, improvement antipollution ability and mechanical life.

In order to achieve the above object, the utility model adopts the following technical scheme: a neutral detachable single-mode beam expanding optical fiber connector terminal comprises an inner shell, an outer shell, a pressure joint ring, a spring and a beam expanding assembly, the main body of the inner shell is tubular, a first boss is arranged on the peripheral surface of the head section of the inner shell, the head section of the inner shell is sleeved with an outer shell, a pressure joint ring is fixed on the tail section of the inner shell, the lengths of the outer shell and the compression joint ring are both smaller than that of the inner shell, a gap is arranged between the inner peripheral surface of the outer shell and the outer peripheral surface of the inner shell, a spring is arranged between the inner shell and the outer shell and sleeved on the inner shell, one end of the spring is abutted with the inner peripheral surface of the outer shell, the other end of the spring is abutted with the first boss, the spring is used for providing abutting force when in abutting joint, the outer shell can move along the axial direction and the moving range of the outer shell is limited by the first boss and the crimping ring, the beam expanding assembly is fixedly connected with the inner shell along the axial direction, and the tail section of the outer shell is provided with a clamping jaw platform.

As preferred, expand the subassembly and include from focusing lens, sleeve pipe, capillary and optic fibre, optic fibre is worn to be equipped with along its central axis direction by the capillary, optic fibre right side end face flushes with capillary right side end face, and the left side is worn out the capillary left end and is extended to the crimping intra-annular along the axial, the capillary right side is equipped with from focusing lens, optic fibre right side end face, capillary right-hand member face all coincide with the focus of from focusing lens, capillary, from focusing lens are provided with the sleeve pipe outward, the sleeve pipe is provided with the sleeve outward, telescopic right side end face extends to the outside of focusing lens right-hand member face along the axial, the head segment butt of sleeve left side section and interior casing.

Preferably, the axial distance between the right end surface of the sleeve and the right end surface of the focusing lens is 0.15 mm.

Preferably, the tail section of the inner shell is provided with a second boss, and the second boss is used for enhancing the tensile property.

Preferably, the number of the second bosses is two.

Preferably, the optical fiber and the capillary tube, the capillary tube and the sleeve, the self-focusing lens and the sleeve, the sleeve and the inner shell are bonded and fixed by epoxy 353 ND.

Preferably, the sleeve is made of a ceramic material.

Preferably, the optical fiber is a single mode optical fiber.

Preferably, the right end face of the self-focusing lens exceeds the right end face of the sleeve by 0.5 mm.

Use the utility model discloses a beneficial effect is: after the terminal is produced, the terminal can be directly sent into a beam expanding single-mode optical fiber connector conforming to ARINC-801 standard through a pick-and-place tool with a standard model, so that non-contact transmission of optical signals is realized, the sensitivity to dust is low, and the problem that the optical performance is influenced because the end face of a single-mode optical fiber is exposed to the outside can be effectively avoided; and the butt joint is convenient, and the optical fiber connector can be applied to remote optical signal transmission work in the environments of fields, exploration and the like. The terminal adopts the self-focusing lens to collimate the single-mode optical fiber light spot, realizes non-contact optical signal transmission, and improves the service life of the connector terminal compared with the traditional single-mode optical fiber connector terminal because the end faces of the single-mode optical fibers are not contacted.

This terminal structure theory of operation enlargies through the single mode fiber facula through lens refracting index gradual change principle, increases optical signal transmission effective area, reduces the sensitivity of terminal to the dust, improves connector antipollution performance, and the lens terminal surface all carries out the coating film and handles, compares traditional contact single mode fiber connector terminal and changes cleanly. Because the light spot is enlarged, the sensitivity to vibration impact is very low in the using process, and the vibration resistance and the impact resistance of the single-mode optical fiber connector are greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference numerals include:

1-inner shell, 101-first boss, 102-second boss, 2-outer shell, 201-claw table, 3-crimp ring, 4-spring, 5-self-focusing lens, 6-sleeve, 7-sleeve, 8-capillary, 9-optical fiber.

Detailed Description

In order to make the purpose, technical solution and advantages of the present technical solution more clear, the present technical solution is further described in detail below with reference to specific embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present teachings.

As shown in figure 1, the utility model discloses a single mode fiber connector terminal that realizes that single mode expands and restraints optical fiber connector terminal can be dismantled, improves connector maintenance efficiency, improves antipollution ability and mechanical life, a neutral can be dismantled single mode expands and restraints optical fiber connector terminal, including interior casing 1, shell body 2, crimp ring 3, spring 4 and expand and restraint the subassembly, interior casing 1 main part is the tubulose, have first boss 101 on the outer peripheral face of casing 1 head, the cover is equipped with shell body 2 on casing 1 head, is fixed with crimp ring 3 on the tail section, the length of shell body 2, crimp ring 3 all is less than interior casing 1, has the space between shell body 2 inner peripheral surface and the interior casing 1 outer peripheral face, be provided with spring 4 between interior casing 1 and shell body 2, spring 4 suit is on interior casing 1, its one end and the inner peripheral surface butt of shell body 2, the other end and first boss 101 butt, spring 4 is used for providing the butt joint force when the butt joint, axial displacement can be followed to shell body 2 and passed through first boss 101 and crimping ring 3 limit its moving range, expand the subassembly along axial and interior casing 1 fixed connection, 2 end sections of shell body are equipped with jack catch platform 201, jack catch platform is used for installing difficult coming off when the connector, jack catch platform 201 makes the utility model discloses when installing inside the connector, make with the inside looks butt of connector the utility model discloses the card is solid is difficult for deviating from in the connector.

Expand the subassembly and include from focusing lens 5, sleeve 6, sleeve pipe 7, capillary 8 and optic fibre 9, optic fibre 9 is worn to be equipped with along its central axis direction by capillary 8, 9 right side end faces of optic fibre flush with 8 right side end faces of capillary, and the left side is worn out the 8 left ends of capillary and is extended to in the crimp ring 3 along the axial, 8 right sides of capillary are equipped with from focusing

lens

5, 9 right side end faces of optic fibre, 8 right side end faces of capillary all coincide with the focus of from focusing lens 5, capillary 8, 5 outer sleeves 7 that are provided with of from focusing lens, sleeve pipe 7 is provided with sleeve 6 outward, the right side end face of sleeve 6 extends to the outside of 5 right side end faces of focusing lens along the axial, and 5 terminal surfaces of lens are not worn and torn when this kind of structure is used for guaranteeing the connector butt joint, sleeve 6 left side section and interior casing 1's head section department looks butt.

The axial distance between the right end face of the sleeve 6 and the right end face of the focusing lens 5 is 0.15 mm.

The tail section of the inner shell 1 is provided with a second boss 102, and the second boss 102 is used for enhancing the tensile property. So as to increase the friction force of the aramid fiber and further enhance the tensile effect of the single-mode optical fiber 9.

The number of the second bosses 102 is two.

And the optical fiber 9 and the capillary tube 8, the capillary tube 8 and the sleeve 7, the self-focusing lens 5 and the sleeve 7, the sleeve 7 and the sleeve 6, and the sleeve 6 and the inner shell 1 are bonded and fixed through epoxy adhesive 353 ND.

The sleeve 6 is made of ceramic materials.

The optical fiber 9 is a single mode optical fiber.

The right end face of the self-focusing lens 5 exceeds the right end face of the sleeve 7 by 0.5mm, namely the self-focusing lens 5 protrudes out of the front end face of the sleeve 7 by 0.5mm, wherein the self-focusing lens 5 plays a role in collimating and amplifying light beams by the principle that the refractive index of the lens changes along with the radius; the sleeve 6 plays a role in protecting the single mode optical fiber 9, the self-focusing lens 5 and the sleeve 7; the capillary 8 and the sleeve 7 assist the optical fiber 9 to be coupled with the self-focusing lens 5, enlarge the light spot of the optical fiber 9 and collimate the light beam.

The utility model discloses when using, at first with interior casing 1, spring 4 in installing shell body 2 in proper order, then close up to outer casing 2, ensure that spring 4 is compressible, but and interior casing 1 drunkenness in outer casing 2. The optical fiber 9 is stripped and then is bonded with the capillary 8 through epoxy 353ND, the front end protrusion is processed by a glass cutter, and grinding and polishing are carried out to manufacture an optical fiber 9 inserting needle, so that the end face of the optical fiber 9 is smooth and has no scratch. Clean 5 terminal surfaces of self-focusing lens use epoxy 353ND to bond in sleeve pipe 7 and constitute the lens subassembly, self-focusing lens 5 outstanding sleeve pipe 7 preceding terminal surface 0.5 mm's position, make things convenient for the some glue of lens anterior segment, can avoid again that the lens depression is too big when the secondary coupling, the later stage is clean inconvenient. The lens component and the optical fiber 9 inserting needle are arranged in the sleeve 6 to be coupled to collimate and amplify the light beam, the end face of the optical fiber 9 inserting needle is ensured to be positioned at the focus of the self-focusing lens 5, the most effective amplification of the light spot is realized, and the fixed position is bonded by epoxy adhesive 353 ND. The sleeve 6 is pre-fixed at the front end of the light spot tester, the light spot tester and the sleeve 6 are ensured to be coaxial, the coupled beam expanding assembly is subjected to beam correction, the light beam is ensured to be emitted out through the optical fiber 9 and to be coaxial with the sleeve 6 through the lens, and then the epoxy adhesive 353ND is dispensed on the sleeve 7 to be fixed to form the beam expanding assembly. Then the beam expanding assembly pipe is matched with the inner shell 1 to play a role in protecting and supporting. Epoxy 353ND is filled in the gap in the middle of the inner shell 1 in a vacuumizing mode, and the overall stability of the terminal is improved. Finally, the compression joint ring 3 is fixed on the inner shell 1 in a compression joint mode, the aramid fiber friction force of the optical fiber 9 is increased through the two bosses on the inner shell 1, and the tensile effect of the optical fiber 9 is further enhanced.

The foregoing is only a preferred embodiment of the present invention, and many variations can be made in the specific embodiments and applications of the present invention by those skilled in the art without departing from the spirit of the present invention.

Claims

1. The utility model provides a single mode expands beam fiber connector terminal can be dismantled to neutral which characterized in that: including interior casing (1), shell body (2), crimping ring (3), spring (4) and expand the subassembly, interior casing (1) main part is the tubulose, first boss (101) have on interior casing (1) head section outer peripheral face, and the cover is equipped with shell body (2) on interior casing (1) head section, is fixed with crimping ring (3) on the tail section, the length of shell body (2), crimping ring (3) all is less than interior casing (1), has the space between shell body (2) inner peripheral face and interior casing (1) outer peripheral face, be provided with spring (4) between interior casing (1) and shell body (2), spring (4) suit is on interior casing (1), and its one end and the inner peripheral face looks butt of shell body (2), the other end and first boss (101) looks butt joint, spring (4) are used for providing the butt joint when the butt joint and are to the relay, axial displacement can be followed to shell body (2) and by first boss (101) limit its with crimping ring (3) and restrict it Moving range, expand the subassembly along axial and interior casing (1) fixed connection, shell body (2) tail section is equipped with jack catch platform (201).

2. The neutral removable single mode beam expanding fiber optic connector terminal of claim 1, wherein: the beam expanding assembly comprises a self-focusing lens (5), a sleeve (6), a sleeve (7), a capillary tube (8) and an optical fiber (9), the capillary tube (8) is provided with an optical fiber (9) along the central axis direction in a penetrating way, the right end face of the optical fiber (9) is flush with the right end face of the capillary tube (8), the left side axially penetrates out of the left end of the capillary tube (8) and extends into the pressure joint ring (3), the right side of the capillary tube (8) is provided with a self-focusing lens (5), the right end surface of the optical fiber (9) and the right end surface of the capillary tube (8) are superposed with the focus of the self-focusing lens (5), a sleeve (7) is arranged outside the capillary tube (8) and the self-focusing lens (5), sleeve pipe (7) are provided with sleeve (6) outward, the right side terminal surface of sleeve (6) extends to the outside of focusing lens (5) right-hand member face along the axial, sleeve (6) left side section and the head segment butt of interior casing (1).

3. The neutral removable single mode beam expanding fiber optic connector terminal of claim 2, wherein: the axial distance between the right end face of the sleeve (6) and the right end face of the focusing lens (5) is 0.15 mm.

4. The neutral removable single mode beam expanding fiber optic connector terminal of claim 1, wherein: the tail section of the inner shell (1) is provided with a second boss (102), and the second boss (102) is used for enhancing the tensile property.

5. The neutral removable single mode beam expanding fiber optic connector terminal of claim 4, wherein: the number of the second bosses (102) is two.

6. The neutral removable single mode beam expanding fiber optic connector terminal of claim 2, wherein: and the optical fiber (9) and the capillary tube (8), the capillary tube (8) and the sleeve (7), the self-focusing lens (5) and the sleeve (7), the sleeve (7) and the sleeve (6) and the inner shell (1) are bonded and fixed through epoxy adhesive 353 ND.

7. The neutral removable single mode beam expanding fiber optic connector terminal of claim 2, wherein: the sleeve (6) is made of ceramic materials.

8. The neutral removable single mode beam expanding fiber optic connector terminal of claim 2, wherein: the optical fiber (9) is a single mode optical fiber (9).

9. The neutral removable single mode beam expanding fiber optic connector terminal of claim 2, wherein: the right end face of the self-focusing lens (5) exceeds the right end face of the sleeve (7) by 0.5 mm.