CN115421256B - Underwater wet-plug self-cleaning optical fiber contact pin - Google Patents
Underwater wet-plug self-cleaning optical fiber contact pin Download PDFInfo
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- CN115421256B CN115421256B CN202211212980.2A CN202211212980A CN115421256B CN 115421256 B CN115421256 B CN 115421256B CN 202211212980 A CN202211212980 A CN 202211212980A CN 115421256 B CN115421256 B CN 115421256B
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- shell
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 123
- 238000004140 cleaning Methods 0.000 title claims abstract description 22
- 239000000919 ceramic Substances 0.000 claims abstract description 84
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 239000012528 membrane Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 59
- 239000010959 steel Substances 0.000 claims description 59
- 210000001503 joint Anatomy 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012827 research and development Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3816—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres for use under water, high pressure connectors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention provides an underwater wet-plug self-cleaning optical fiber pin, which comprises a male pin and a female pin which are coaxially connected in a plug-in manner, wherein the female pin comprises a female shell, a female elastic membrane, a female optical fiber ceramic ferrule and a female guide mechanism; the male pin comprises a male shell, a male elastic membrane, a male core insert spring, a C-shaped ceramic sleeve, a male optical fiber ceramic core insert and a male guide mechanism; the male elastic membrane and the female elastic membrane are provided with a straight-shaped, cross-shaped or rice-shaped opening. On the premise of ensuring the mechanical alignment precision, the invention utilizes the two elastic films arranged on the end face of the contact pin to realize the end face self-cleaning function, so that the end face pollution caused in the process of repeated plugging and unplugging and the impurity in the filtered water can be solved, the optical fibers can be quickly plugged and plugged under water, and certain transmission performance is ensured.
Description
Technical Field
The invention relates to the field of underwater communication parts, in particular to an underwater wet-plug self-cleaning optical fiber contact pin.
Background
With the exploration and exploitation of underwater resources by various large companies, the effectiveness of underwater communication engineering is increasingly remarkable. The transmission of optical signals is an indispensable link in communication engineering. It is important to perform fast wet plug butt joint of optical fibers under water and to ensure certain transmission performance.
The majority of traditional underwater communication adopts land plugging underwater use, and the sealing after plugging is ensured; or the current foreign wet plugging technology is expensive and belongs to the neck clamping technology. As shown in figure 1, the expansion series experiments respectively calculate the loss of the self-made optical fiber in air, water and silicone oil, and experiments prove that the optical transmission structure can be directly plugged in and pulled out in the water, the transmission loss is between the air and the silicone oil, compared with the silicone oil filling liquid, the reasonable transmission loss is replaced by the design development difficulty, the refractive index of the water is about 1.33, the numerical aperture of the water can be effectively improved, and the influence of refractive index mutation on the optical fiber coupling process is weakened. However, in practical underwater environments, impurities such as garbage, sediment and the like are unavoidable, and the transmission performance of optical signals can be greatly reduced. In order to better adjust the balance point of the transmission loss and the research and development difficulty, the research and development difficulty is well reduced in a reasonable range, and the sediment pollution condition of the contact pin needs to be reduced on the premise of ensuring the mechanical alignment precision.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an underwater wet-plug self-cleaning optical fiber contact pin with a cleaning function.
In order to achieve the above purpose, the present invention adopts the following specific technical scheme:
The underwater wet-plug self-cleaning optical fiber pin comprises a male pin and a female pin which are coaxially connected in a plug-and-plug manner; the female pin comprises a female shell, a female elastic membrane, a female optical fiber ceramic ferrule and a female guide mechanism; the female head shell is of a hollow structure, and the female head elastic membrane is fixed at one end of the female head shell and is provided with a straight-line, cross-shaped or m-shaped opening; radial protrusions are formed in the female head shell, and the radial protrusions divide the inner part of the female head shell into an inserting cavity and a female head insert core guiding cavity; the female head guide mechanism is arranged in the female head insert core guide cavity, one end of the female head optical fiber ceramic insert core is positioned in the insert cavity, the other end of the female head optical fiber ceramic insert core penetrates through the radial bulge to be fixedly connected with the female head guide mechanism, and the female head optical fiber ceramic insert core performs linear reciprocating motion under the guide of the female head guide mechanism; the female head guiding mechanism is of a hollow structure and is used for penetrating through the optical fiber jumper, a first groove is formed in the tail end of the female head optical fiber ceramic ferrule, the ground optical fiber jumper is adhered in the first groove, and the optical fiber jumper in the first groove is in butt joint with the optical fiber jumper in the female head guiding mechanism; the male pin comprises a male shell, a male elastic membrane, a male core insert spring, a C-shaped ceramic sleeve, a male optical fiber ceramic core insert and a male guide mechanism; the male elastic membrane is fixed at the end part of the male shell with a smaller diameter, and is provided with a straight-line, cross-shaped or m-shaped opening, the male core insert spring is sleeved at the smaller diameter part of the male shell, and two ends of the male core insert spring are respectively abutted with the step part of the male shell and the male elastic membrane; a C-shaped ceramic sleeve sliding cavity and a male plug core guiding cavity are formed in the male head shell, and the diameter of the C-shaped ceramic sleeve sliding cavity is smaller than that of the male plug core guiding cavity; the C-shaped ceramic sleeve is inserted into the C-shaped ceramic sleeve sliding cavity in a sliding way, and the male optical fiber ceramic ferrule is bonded in the C-shaped ceramic sleeve; the male head guide mechanism is arranged in the male head insert core guide cavity, the male head guide mechanism is fixedly connected with the tail end of the male head optical fiber ceramic insert core, and the male head optical fiber ceramic insert core performs linear reciprocating motion under the guide of the male head guide mechanism; the male head guiding mechanism is of a hollow structure and is used for penetrating through the optical fiber jumper, a second groove is formed in the tail end of the male head optical fiber ceramic ferrule, the ground optical fiber jumper is adhered in the second groove, and the optical fiber jumper in the second groove is in butt joint with the optical fiber jumper in the male head guiding mechanism.
Preferably, the female head guiding mechanism comprises a female head guiding ring, a female head insert core steel seat and a female head insert core spring; the tail end of the female optical fiber ceramic ferrule is adhered in the female ferrule steel seat, and the female ferrule steel seat passes through the female guide ring and then is abutted against the radial protrusion; the female plug core steel seat is of a hollow stepped structure, one end of the female plug core spring is sleeved on the female plug core steel seat and is abutted against the step of the female plug core steel seat, and the other end of the female plug core spring is abutted against the female head shell.
Preferably, a first positioning protrusion is formed in the female ferrule steel seat along the radial direction, and the tail end of the female optical fiber ceramic ferrule is abutted with the first positioning protrusion.
Preferably, the female guiding mechanism further comprises a female front limiting ring and a female rear limiting ring, a circle of first limiting protrusions are formed on the outer wall of the female guiding ring, the female front limiting ring and the female rear limiting ring are sleeved on the female guiding ring and located on two sides of the first limiting protrusions, and O-shaped rings are sleeved between the female front limiting ring and the first limiting protrusions and between the female rear limiting ring and the first limiting protrusions respectively.
Preferably, the female head shell comprises a female head front shell and a female head rear shell which are in threaded connection, an inner cavity of the female head front shell is of a stepped structure, one end of a female head front limiting ring is abutted against a step of the female head front shell, the other end of the female head front limiting ring is abutted against an O-shaped ring, and a female head insert core spring and a female head rear limiting ring are respectively abutted against the end part of the female head rear shell.
Preferably, the male guide mechanism comprises a male guide ring, a male core insert steel seat and a male core insert spring; the tail end of the male optical fiber ceramic ferrule is adhered in the male ferrule steel seat, and the male ferrule steel seat is inserted into the male guide ring in a sliding manner and is abutted against the end part of the male ferrule guide cavity; the male pin core steel seat is of a hollow stepped structure, one end of the male pin core spring is sleeved on the male pin core steel seat and is in a step position of the male pin core steel seat, and the other end of the male pin core spring is abutted against the male pin shell.
Preferably, a second positioning protrusion is formed in the male ferrule steel seat along the radial direction, and the tail end of the male optical fiber ceramic ferrule is abutted against the second positioning protrusion.
Preferably, the male guide mechanism further comprises a male front limit ring and a male rear limit ring, a circle of second limit protrusions are formed on the outer wall of the male guide ring, the male front limit ring and the male rear limit ring are sleeved on the male guide ring and located on two sides of the second limit protrusions, and rubber rings are sleeved between the male front limit ring and the second limit protrusions and between the male rear limit ring and the second limit protrusions respectively.
Preferably, the male head shell comprises a male head front shell and a male head rear shell which are in threaded connection, a C-shaped ceramic sleeve sliding cavity and a male head insert core guiding cavity are formed in the inner cavity of the male head front shell, a step is formed in the male head insert core guiding cavity, one end of the male head front limiting ring is abutted with the step of the male head insert core guiding cavity, the other end of the male head front limiting ring is abutted with the rubber ring, and the male head insert core spring is abutted with the end of the male head rear shell.
Preferably, the rubber spring is wrapped with a rubber film.
The invention can obtain the following technical effects:
The invention can better adjust the balance point of transmission loss and research and development difficulty, well reduce the research and development difficulty in a reasonable range, and solve the problem of end face pollution caused in the process of repeated plugging and unplugging and filter impurities in water by arranging two elastic films on the end face of the contact pin to realize the end face self-cleaning function on the premise of ensuring the mechanical alignment precision. The optical fibers are subjected to quick wet plugging and butting under water, and certain transmission performance is ensured.
Drawings
FIG. 1 is a schematic diagram of transmission loss of an optical fiber in each medium;
FIG. 2 is a schematic diagram of the overall structure of the underwater wet-plug self-cleaning optical fiber pin provided by the invention;
FIG. 3 is a schematic diagram of the overall structure of the female pin provided by the present invention;
FIG. 4 is a schematic view of the structure of the elastic female film provided by the present invention;
FIG. 5 is a schematic diagram of the overall structure of the male pin provided by the present invention;
Fig. 6 is a schematic structural view of the male elastic membrane provided by the invention.
Wherein reference numerals include: female pin 1, female housing 11, female front housing 111, female rear housing 112, radial protrusion 113, mating cavity 114, female ferrule guide cavity 115, female elastic membrane 12, female optical fiber ferrule 13, first groove 131, optical fiber jumper 14, female guide ring 151, female ferrule steel seat 152, female ferrule spring 153, first positioning protrusion 154, female front stop ring 155, female rear stop ring 156, first positioning protrusion 157, O-ring 158, male pin 2, male housing 21, male front housing 211, male rear housing 212, rubber spring 22, C-shaped ferrule 23, male optical fiber ferrule 24, second groove 241, male elastic membrane 25, male guide ring 261, male ferrule steel seat 262, male ferrule spring 263, second positioning protrusion 264, male front stop ring 265, male rear stop ring 266, second positioning protrusion 267, rubber ring 268.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, like modules are denoted by like reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, a detailed description thereof will not be repeated.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limiting the invention.
FIG. 2 shows the overall structure of the underwater wet-plug self-cleaning optical fiber pin provided by the invention.
As shown in fig. 2, the underwater wet-plug self-cleaning optical fiber pin provided by the invention comprises a female pin 1 and a male pin 2 which are coaxially connected in a plug-and-plug manner.
Fig. 3 shows the overall structure of the female pin provided by the present invention.
As shown in fig. 3, the female pin includes a female housing 11, a female elastic membrane 12, a female optical fiber ferrule 13, and a female guide mechanism.
The female housing 11 comprises a hollow female front shell 111 and a female rear shell 112, one end of the female front shell 111 is provided with internal threads, the female rear shell 112 is of a stepped structure, a thinner part of the female rear shell 112 is provided with external threads, the female front shell 111 is in threaded connection with the female rear shell 112, radial protrusions 113 are formed in the female front shell 111 to divide the female front shell 111 into an insertion cavity 114 and a female ferrule guiding cavity 115, the female optical fiber ceramic ferrule 13 is positioned in the insertion cavity 114 and forms a certain distance with the end face of the insertion cavity 114, and the female guiding mechanism is positioned in the female ferrule guiding cavity 115 and is used for guiding the female optical fiber ceramic ferrule 13 to make the female optical fiber ceramic ferrule 13 reciprocate linearly.
The female guiding mechanism is also hollow and is used for penetrating the optical fiber patch cord 14, and a through hole with a slightly larger aperture than the optical fiber patch cord 14 is formed in the female rear shell 112, so that only the optical fiber patch cord 14 penetrates.
The female elastic membrane 12 is vulcanized and fixed at the end of the female front shell 111 where no screw thread is provided, as shown in fig. 4, the female elastic membrane 12 is provided with a straight-shaped, cross-shaped or rice-shaped opening, and the opening has a pressing force towards the center, so that the particle impurities in water can be completely filtered, and the end face of the female front shell 111 is prevented from being polluted.
A first groove 131 is formed at the tail end of the female optical fiber ceramic ferrule 13, a ground optical fiber jumper wire is bonded in the first groove 131 to form an optical fiber structure, and the optical fiber jumper wire in the first groove 131 is in butt joint with the optical fiber jumper wire 14 in the female guiding mechanism.
The female guide mechanism comprises a female guide ring 151, a female core insert steel seat 152 and a female core insert spring 153, the tail end of the female optical fiber ceramic core insert 13 is adhered in the female core insert steel seat 152, the length of the female core insert steel seat 152 is larger than that of the female guide ring 151, the female core insert steel seat 152 passes through the female core insert steel seat 151 and then abuts against the radial protrusion 113, the female core insert steel seat 152 can slide in the female guide ring 151, the female core insert steel seat 152 is of a hollow stepped structure, a thicker part of the female core insert steel seat 152 contacts with the inner wall of the female core insert steel seat 151, a gap is formed between a thinner part of the female core insert steel seat 152 and the inner wall of the female core insert steel seat 151, one end of the female core insert spring 153 is sleeved on the female core insert steel seat 152 and abuts against the step of the female core insert steel seat 152, the other end of the female core insert spring 153 abuts against the thinner end face of the female rear shell 112, and the female core insert spring 153 provides reset power for the female core insert steel seat 152.
A first positioning protrusion 154 is formed in the female ferrule steel seat 152 in the radial direction, and the tail end of the female optical fiber ferrule 13 abuts against the first positioning protrusion 154.
The female guiding mechanism further comprises a female front limiting ring 155 and a female rear limiting ring 156, a circle of first limiting protrusions 157 are formed on the outer wall of the female guiding ring 151, the female front limiting ring 155 and the female rear limiting ring 156 are sleeved on the female guiding ring 151 and located on two sides of the first limiting protrusions 157, O-shaped rings 158 are sleeved between the female front limiting ring 155 and the first limiting protrusions 157 and between the female rear limiting ring 156 and the first limiting protrusions 157 respectively, and abrasion of internal parts can be delayed by the two O-shaped rings 158.
The female ferrule guiding cavity 115 has a stepped structure, one end of the female front limiting ring 155 is abutted against the step of the female ferrule guiding cavity 115, the other end of the female front limiting ring 155 is abutted against the O-shaped ring 158, one end of the female rear limiting ring 156 is abutted against the O-shaped ring 158, and the other end of the female rear limiting ring 156 is abutted against the thinner end of the female rear shell 112. The spacing of the female guide ring 151 is achieved by a female front spacing ring 155 and a female rear spacing ring 156.
When the female guide mechanism is assembled, the female front limiting ring 155 is sleeved on the female guide ring 151, the female guide ring 151 is slid into the female ferrule guide cavity 115, the female front limiting ring 155 is abutted against the step of the female ferrule guide cavity 115, the female ferrule steel seat 152 for bonding the female optical fiber ceramic ferrule 13 is slid into the female guide ring 151, the female optical fiber ceramic ferrule 13 is entered into the insertion cavity 114, the female ferrule steel seat 152 is abutted against the radial protrusion 113, the female rear limiting ring 156 is slid into the female ferrule guide cavity 115 to be abutted against the O-shaped ring 158, and finally the female rear shell 112 is screwed onto the female shell 11.
Fig. 5 shows the overall structure of the male pin provided by the present invention.
As shown in fig. 5, the male pin includes a male housing 21, a rubber spring 22, a C-shaped ceramic ferrule 23, a male fiber optic ferrule 24, a male elastic membrane 25, and a male guide mechanism.
The male housing 21 includes a male front housing 211 and a male rear housing 212, the male front housing 211 has a stepped structure, and the male elastic membrane 25 is vulcanized and fixed at the end of the male housing 21 with a smaller diameter, as shown in fig. 6, the male elastic membrane 25 has a straight, cross or m-shaped opening, and the same function as the female elastic membrane 12.
The inside of the front male housing 211 forms a C-shaped ceramic sleeve sliding cavity, a male ferrule guiding cavity and a connecting cavity, the connecting cavity is provided with internal threads, the rear male housing 212 is of a stepped structure, the thinner part of the rear male housing 212 is provided with external threads, the front male housing 211 is in threaded connection with the rear male housing 212, the C-shaped ceramic sleeve 23 slides in the C-shaped ceramic sleeve sliding cavity, one part of the male optical fiber ceramic ferrule 24 is adhered in the C-shaped ceramic sleeve 23, the other part of the male optical fiber ceramic ferrule is positioned in the male ferrule guiding cavity and fixedly connected with the male guiding mechanism, the male optical fiber ceramic ferrule 24 performs reciprocating linear motion under the guiding of the male guiding mechanism, and the C-shaped ceramic sleeve 23 plays a role in accurately butting the male optical fiber ceramic ferrule 24 with the female optical fiber ceramic ferrule 13.
The male guiding mechanism is also hollow and is used for penetrating through the optical fiber patch cord 14, and a through hole with a slightly larger aperture than the optical fiber patch cord 14 is formed in the male rear housing 212, so that only the optical fiber patch cord 14 penetrates through.
A second groove 241 is formed at the tail end of the male optical fiber ceramic ferrule 24, a ground optical fiber jumper wire is bonded in the second groove 241 to form an optical fiber structure, and the optical fiber jumper wire in the second groove 241 is in butt joint with the optical fiber jumper wire 14 in the male guide mechanism.
The rubber spring 22 is vulcanized and fixed at the part with a smaller diameter of the male housing 21, two ends of the rubber spring are respectively abutted against the step part of the male housing 21 and the male elastic membrane 25, the rubber spring 22 is externally provided with a rubber membrane, the inside of the rubber spring 22 is provided with a spring made of carbon steel, and the rubber spring 22 plays a role in helping the restoration of the male elastic membrane 25.
The male head guiding mechanism comprises a male head guiding ring 261, a male head inserting core steel seat 262 and a male head inserting core spring 263, the tail end of the male head optical fiber ceramic inserting core 24 is adhered in the male head inserting core steel seat 262, the length of the male head inserting core steel seat 262 is larger than that of the male head guiding ring 261, the male head inserting core steel seat 262 penetrates through the male head guiding ring 261 and then abuts against the end face of the male head inserting core guiding cavity, the male head inserting core steel seat 262 can slide in the male head guiding ring 261, the male head inserting core steel seat 262 is of a hollow stepped structure, a thicker part of the male head inserting core steel seat 262 is in contact with the inner wall of the male head guiding ring 261, a gap is formed between the thinner part of the male head inserting core steel seat 262 and the inner wall of the male head guiding ring 261, one end of the male head inserting core spring 263 is sleeved on the male head inserting core steel seat 262 and abuts against the step of the male head inserting core steel seat 262, the other end face of the male head inserting core spring 263 abuts against the thinner end face of the female head rear shell 112, and the male head inserting core spring 263 provides power for the male head inserting core steel seat 262.
A second positioning protrusion 264 is formed in the male ferrule steel seat 262 along the radial direction, and the tail end of the male optical fiber ceramic ferrule is abutted against the second positioning protrusion 264.
The male guiding mechanism further comprises a male front limiting ring 265 and a male rear limiting ring 266, a circle of second limiting protrusions 267 are formed on the outer wall of the male guiding ring 261, the male front limiting ring 265 and the male rear limiting ring 266 are respectively sleeved on the male guiding ring 161 and located on two sides of the second limiting protrusions 267, rubber rings 268 are respectively sleeved between the male front limiting ring 265 and the second limiting protrusions 267 and between the male rear limiting ring 266 and the second limiting protrusions 267, and the two rubber rings 268 can delay abrasion of internal parts.
The male ferrule guiding cavity is of a stepped structure, one end of the male front limiting ring 265 is abutted against the step of the male ferrule guiding cavity, the other end of the male front limiting ring 265 is abutted against the rubber ring 268, one end of the male rear limiting ring 266 is abutted against the rubber ring 268, and the other end of the male rear limiting ring 266 is abutted against the thinner end of the male rear shell 212. The limit of the male guide ring 161 is achieved through a male front limit ring 265 and a male rear limit ring 266.
The assembly process of the male guide mechanism is the same as that of the female guide mechanism, and will not be described again.
The plug process of the female pin and the male pin is as follows: after the end surfaces of the female elastic film 12 and the male elastic film 25 start to contact each other, the male elastic film 25 starts to retreat, the thinner part of the male front shell 211, the C-shaped ceramic sleeve 23 and the male optical fiber ceramic ferrule 24 inside the C-shaped ceramic sleeve 23 pass through the opening of the male elastic film 25 and then are inserted into the insertion cavity 114, and after the insertion is continued, the female optical fiber ceramic ferrule 13 and the male optical fiber ceramic ferrule 24 are contacted in the C-shaped ceramic sleeve 23 to complete insertion, and the interference fit of the male optical fiber ceramic ferrule 24 and the C-shaped ceramic sleeve 23 is continued to increase the accuracy; at this time, the rubber spring 22, the female ferrule spring 153 and the male ferrule spring 263 are compressed and deformed, and pressure is applied to the contact between the female optical fiber ferrule 13 and the male optical fiber ferrule 24, so that the precision is higher. When the female optical fiber ceramic ferrule 13 and the male optical fiber ceramic ferrule 24 are pulled out, the female optical fiber ceramic ferrule 13 and the male optical fiber ceramic ferrule 24 are respectively withdrawn from the plugging position backward, the female optical fiber ceramic ferrule spring 153 and the male optical fiber ceramic ferrule 24 are gradually relaxed, the female optical fiber ceramic ferrule 13 and the male optical fiber ceramic ferrule 24 are gradually reset, after the male optical fiber ceramic ferrule 24 is completely withdrawn from the plugging cavity 114, the female optical fiber ceramic ferrule 13 and the male optical fiber ceramic ferrule 24 are reset, the male elastic membrane 25 returns to the initial position under the action force of deformation recovery of the rubber spring 22, and the openings of the male elastic membrane 25 and the female elastic membrane 12 are closed.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been illustrated and described above, it will be appreciated that the above described embodiments are illustrative and should not be construed as limiting the invention. Variations, modifications, alternatives and variations of the above-described embodiments may be made by those of ordinary skill in the art within the scope of the present invention.
The above embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made in accordance with the technical idea of the present invention shall be included in the scope of the claims of the present invention.
Claims (10)
1. The underwater wet-plug self-cleaning optical fiber contact pin is characterized by comprising a male contact pin and a female contact pin which are coaxially connected in a plug-in manner;
The female pin comprises a female shell, a female elastic membrane, a female optical fiber ceramic ferrule and a female guide mechanism; wherein,
The female head shell is of a hollow structure, the female head elastic membrane is fixed at one end of the female head shell, the female head elastic membrane is provided with a straight-shaped, cross-shaped or rice-shaped opening, the opening is provided with a extrusion force towards the center, particle impurities in water can be completely filtered, and the end face of the female head front shell is prevented from being polluted; a radial protrusion is formed in the female head shell, and the radial protrusion divides the interior of the female head shell into an insertion cavity and a female head insert core guide cavity;
The female head guide mechanism is arranged in the female head insert core guide cavity, one end of the female head optical fiber ceramic insert core is positioned in the insert cavity, the other end of the female head optical fiber ceramic insert core penetrates through the radial protrusion to be fixedly connected with the female head guide mechanism, and the female head optical fiber ceramic insert core is guided by the female head guide mechanism to do linear reciprocating motion;
The female head guide mechanism is of a hollow structure and is used for penetrating through an optical fiber jumper, a first groove is formed in the tail end of the female head optical fiber ceramic ferrule, the first groove is internally bonded with an abraded optical fiber jumper, and the optical fiber jumper in the first groove is in butt joint with the optical fiber jumper in the female head guide mechanism;
The male pin comprises a male shell, a male elastic membrane, a rubber spring, a C-shaped ceramic sleeve, a male optical fiber ceramic ferrule and a male guide mechanism; wherein,
The male elastic membrane is fixed at the end part of the male shell with a smaller diameter, is provided with a straight-shaped, cross-shaped or rice-shaped opening, has the same function as the female elastic membrane, is sleeved on the part of the male shell with a smaller diameter, and two ends of the rubber spring are respectively abutted with the step part of the male shell and the male elastic membrane;
A C-shaped ceramic sleeve sliding cavity and a male plug core guiding cavity are formed in the male head shell, and the diameter of the C-shaped ceramic sleeve sliding cavity is smaller than that of the male plug core guiding cavity;
the C-shaped ceramic sleeve is inserted into the C-shaped ceramic sleeve sliding cavity in a sliding way, and the male optical fiber ceramic ferrule is bonded in the C-shaped ceramic sleeve;
the male head guide mechanism is arranged in the male head insert core guide cavity and fixedly connected with the tail end of the male head optical fiber ceramic insert core, and the male head optical fiber ceramic insert core performs linear reciprocating motion under the guide of the male head guide mechanism;
The male head guide mechanism is of a hollow structure and is used for penetrating through an optical fiber jumper, a second groove is formed in the tail end of the male head optical fiber ceramic ferrule, a ground optical fiber jumper is bonded in the second groove, and the optical fiber jumper in the second groove is in butt joint with the optical fiber jumper in the male head guide mechanism;
the plug process of the female pin and the male pin is as follows: after the end surfaces of the female elastic film and the male elastic film come into contact with each other, the male elastic film starts to retreat.
2. The underwater wet-pluggable self-cleaning optical fiber stub of claim 1, wherein the female head guiding mechanism comprises a female head guiding ring, a female head ferrule steel seat and a female head ferrule spring; the tail end of the female optical fiber ceramic ferrule is adhered in the female ferrule steel seat, and the female ferrule steel seat is abutted against the radial protrusion after passing through the female guide ring; the female head lock pin steel seat is of a hollow stepped structure, one end of the female head lock pin spring is sleeved on the female head lock pin steel seat and is abutted to the step of the female head lock pin steel seat, and the other end of the female head lock pin spring is abutted to the female head shell.
3. The underwater wet-plug self-cleaning optical fiber pin according to claim 2, wherein a first positioning protrusion is formed in the female optical fiber ferrule steel seat along the radial direction, and the tail end of the female optical fiber ferrule is abutted against the first positioning protrusion.
4. The underwater wet-plug self-cleaning optical fiber pin according to claim 2 or 3, wherein the female head guiding mechanism further comprises a female head front limiting ring and a female head rear limiting ring, a circle of first limiting protrusions are formed on the outer wall of the female head guiding ring, the female head front limiting ring and the female head rear limiting ring are sleeved on the female head guiding ring and are positioned on two sides of the first limiting protrusions, and O-shaped rings are sleeved between the female head front limiting ring and the first limiting protrusions and between the female head rear limiting ring and the first limiting protrusions respectively.
5. The underwater wet-plug self-cleaning optical fiber plug pin according to claim 4, wherein the female head shell comprises a female head front shell and a female head rear shell which are in threaded connection, an inner cavity of the female head front shell is of a stepped structure, one end of the female head front limiting ring is abutted against a step of the female head front shell, the other end of the female head front limiting ring is abutted against the O-shaped ring, and the female head core-inserting spring and the female head rear limiting ring are respectively abutted against the end part of the female head rear shell.
6. The underwater wet-plug self-cleaning optical fiber plug pin of claim 1, wherein the male head guiding mechanism comprises a male head guiding ring, a male head core insert steel seat and a male head core insert spring; the tail end of the male optical fiber ceramic ferrule is adhered in the male ferrule steel seat, and the male ferrule steel seat is inserted into the male guide ring in a sliding manner and is abutted against the end part of the male ferrule guide cavity; the male pin core steel seat is of a hollow stepped structure, one end of the male pin core spring is sleeved on the male pin core steel seat and is in butt joint with the step of the male pin core steel seat, and the other end of the male pin core spring is in butt joint with the male pin shell.
7. The underwater wet-plug self-cleaning optical fiber pin of claim 6, wherein a second positioning protrusion is formed in the male ferrule steel seat along the radial direction, and the tail end of the male optical fiber ceramic ferrule is abutted against the second positioning protrusion.
8. The underwater wet-plug self-cleaning optical fiber plug pin according to claim 6 or 7, wherein the male head guiding mechanism further comprises a male head front limiting ring and a male head rear limiting ring, a circle of second limiting protrusions are formed on the outer wall of the male head guiding ring, the male head front limiting ring and the male head rear limiting ring are sleeved on the male head guiding ring and located on two sides of the second limiting protrusions, and rubber rings are sleeved between the male head front limiting ring and the second limiting protrusions and between the male head rear limiting ring and the second limiting protrusions respectively.
9. The underwater wet-plug self-cleaning optical fiber plug pin according to claim 8, wherein the male head shell comprises a male head front shell and a male head rear shell which are in threaded connection, an inner cavity of the male head front shell forms the C-shaped ceramic sleeve sliding cavity and the male head plug core guiding cavity, a step is formed in the male head plug core guiding cavity, one end of the male head front limiting ring is abutted with the step of the male head plug core guiding cavity, the other end of the male head front limiting ring is abutted with the rubber ring, and the male head plug core spring is abutted with the end of the male head rear shell.
10. The underwater wet-pluggable self-cleaning optical fiber contact pin of claim 1, wherein a rubber film is wrapped outside the rubber spring.
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