Underwater wet plugging and unplugging precision docking of fiber optic pins

Abstract

The present invention provides an underwater wet plug-in precision docking optical fiber pin, comprising a male pin and a female pin connected by coaxial plug-in; the male pin and the female pin respectively comprise a front base, a rear base, a pin mounting plate, an optical fiber pin assembly and a pin fixing nut, one end of the optical fiber pin assembly is key-connected with the front base, and the other end of the optical fiber pin assembly sequentially passes through the rear base and the pin mounting plate and is threadedly connected with the pin fixing nut, thereby fixing the pin mounting plate with the rear base. The male pin and the female pin of the present invention are respectively designed with a front base and a rear base, and the two rear bases and the pin mounting plate are precisely positioned by arc-shaped positioning blocks; the male pin and the female pin are each key-matched when docking with the front base, and at the same time, the secondary sleeve structure inside the pin ensures the accuracy of optical fiber docking to the greatest extent.

Description

Technical Field

[0001] The present invention relates to the field of underwater communication components, and in particular to underwater wet plugging and precise docking of optical fiber pins. Background Art

[0002] With the exploration and exploitation of deep-sea resources by major companies, the number of marine engineering equipment is increasing. For marine engineering equipment such as seabed observation and energy collection, underwater connectors are very critical devices that can realize underwater wet plug-in and real-time communication, and the transmission of optical signals is an indispensable part of communication engineering. Because most underwater connectors work in the harsh deep sea environment, most of them are mechanically operated, and usually designed with flexible alignment to prevent damage to the equipment caused by multiple plug-ins and pull-outs, but fiber optic docking is very dependent on alignment accuracy. Poor docking accuracy will greatly affect the transmission performance of the signal. Therefore, it is very important to quickly and accurately dock the optical fiber underwater while ensuring excellent transmission performance. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and to propose an underwater wet plug-in precision docking optical fiber pin to achieve rapid and precise docking of underwater optical fibers.

[0004] To achieve the above object, the present invention adopts the following specific technical solutions:

[0005] The underwater wet-plugging precision docking fiber optic pin includes a male pin and a female pin connected by coaxial plugging; wherein, the male pin includes a male front base, a male rear base, a male pin mounting plate, a male fiber optic pin assembly and a male pin fixing nut, one end of the male fiber optic pin assembly is key-connected with the male front base, and the other end of the male fiber optic pin assembly sequentially passes through the male rear base and the male pin mounting plate and then is threadedly connected with the male pin fixing nut, thereby fixing the male pin mounting plate and the male rear base; the female pin includes a female front base, a female rear base, a female pin mounting plate, a female fiber optic pin assembly and a female pin fixing nut, one end of the female fiber optic pin assembly is key-connected with the female front base, and the other end of the female fiber optic pin assembly sequentially passes through the female rear base and the female pin mounting plate and then is threadedly connected with the female pin fixing nut, thereby fixing the female pin mounting plate and the female rear base.

[0006] Preferably, the male fiber optic pin assembly includes a male pin housing and a male fiber optic jumper. The male pin housing is a hollow structure for passing the male fiber optic jumper. A housing groove is formed at the end of the male pin housing close to the female pin plug. The ceramic ferrule of the male fiber optic jumper is bonded and fixed in the housing groove to form an insertion area.

[0007] Preferably, the male plug pin housing is a stepped structure, and a stepped hole is provided in the male plug rear base, and the stepped portion of the male plug pin housing is limited by the stepped hole.

[0008] Preferably, a male flat key is protruding from the male pin shell at a position corresponding to the shell groove, and a male key slot is opened in the male front base, and the male pin and the male front base are docked by the cooperation of the male flat key and the flat key of the male key slot.

[0009] Preferably, a male arc-shaped positioning block is provided on the male rear base, and a male arc-shaped positioning hole is provided on the male pin mounting plate, and the male rear base and the male pin mounting plate are docked by the cooperation of the male arc-shaped positioning block and the male arc-shaped positioning hole.

[0010] Preferably, the portion of the male pin housing extending out of the male pin mounting plate is processed with an external thread, and the male pin fixing nut is processed with an internal thread.

[0011] Preferably, the female fiber optic pin assembly includes a female pin housing, a male fiber optic jumper, a C-shaped ceramic sleeve, a fiber optic steel seat and a spring. The female pin housing is a hollow structure. A radial protrusion is formed in the female pin housing to divide the interior of the female pin housing into a first chamber and a second chamber. The C-shaped ceramic sleeve is installed in the first chamber, and the fiber optic steel seat is installed in the second chamber. One end of the fiber optic steel seat abuts against the radial protrusion, and the other end of the fiber optic steel seat abuts against the spring. The fiber optic steel seat is a hollow structure for passing the female fiber optic jumper. The ceramic ferrule of the female fiber optic jumper is adhesively fixed in the C-shaped ceramic sleeve.

[0012] Preferably, a female flat key is protruding from the female pin shell at a position corresponding to the C-shaped ceramic sleeve, and a female key slot is opened in the female front base, and the female pin and the female front base are docked by the cooperation of the female flat key and the flat key of the female key slot.

[0013] Preferably, the female pin housing is processed with an internal thread at the end corresponding to the spring, and the female pin fixing nut protrudes to form an external thread end, which passes through the female pin mounting plate and is threadedly connected to the female pin housing.

[0014] Preferably, a step is formed at one end of the base after the optical fiber steel seat slides into the female head, and the spring is sleeved on the step.

[0015] Preferably, a female arc-shaped positioning block is provided on the female rear base, and a female arc-shaped positioning hole is provided on the female pin mounting plate, and the female rear base and the female pin mounting plate are docked by the cooperation of the female arc-shaped positioning block and the female arc-shaped positioning hole.

[0016] The present invention can achieve the following technical effects:

[0017] The male pin and female pin are designed with front base and rear base respectively. The two rear bases and the pin mounting plate are precisely positioned through arc-shaped positioning blocks. The male pin and the female pin are respectively mated with the front base through key cooperation. At the same time, the secondary sleeve structure inside the pin ensures the accuracy of optical fiber docking to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall structural diagram of the underwater wet plugging and unplugging precision docking optical fiber pin provided by the present invention;

[0019] Figure 2 It is an overall structural diagram of the male plug pin provided by the present invention;

[0020] Figure 3 yes Figure 2 A cross-sectional view of

[0021] Figure 4 It is a front view of the rear base of the male plug provided by the present invention;

[0022] Figure 5 It is a front view of the male head front base provided by the present invention;

[0023] Figure 6 It is an overall structural diagram of the female plug pin provided by the present invention;

[0024] Figure 7 yes Figure 5 A cross-sectional view of

[0025] Figure 8 It is a front view of the rear base of the female head provided by the present invention;

[0026] Fig. 9 It is a front view of the female head front base provided by the present invention.

[0027] The accompanying drawings include: male pin 1, front base 11, male rear base 12, male pin mounting plate 13, male fiber optic pin assembly 14, male pin housing 141, male fiber optic jumper 142, plug-in area 143, male pin fixing nut 15, male flat key 16, male keyway 17, male arc-shaped positioning block 18, female pin 2, female front base 21, female rear base 22, female pin mounting plate 23, female fiber optic pin assembly 24, female pin housing 241, female fiber optic jumper 242, C-shaped ceramic sleeve 243, fiber optic steel seat 244, spring 245, radial protrusion 246, female pin fixing nut 25, female flat key 26, female keyway 27, female arc-shaped positioning block 28. DETAILED DESCRIPTION

[0028] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0030] like Figure 1-Figure 9 As shown, the underwater wet-plugging precision docking fiber optic pin includes a male pin 1 and a female pin 2 that are coaxially pluggable; wherein, the male pin 1 includes a male front base 11, a male rear base 12, a male pin mounting plate 13, a male fiber optic pin assembly 14 and a male pin fixing nut 15, one end of the male fiber optic pin assembly 14 is key-connected to the male front base 11, and the other end of the male fiber optic pin assembly 14 passes through the male rear base 12 and the male pin mounting plate 13 in sequence and is threadedly connected to the male pin fixing nut 15, thereby fixing the male pin mounting plate 13 to the male rear base 12.

[0031] The male fiber optic pin assembly 14 includes a male pin housing 141 and a male fiber optic jumper 142. The male pin housing 141 is a hollow structure for passing the male fiber optic jumper 142. A housing groove is formed at the end of the male pin housing 141 close to the female pin plug 2. The ceramic core of the male fiber optic jumper is bonded and fixed in the housing groove to form an insertion area 143.

[0032] The male plug pin housing 141 is a stepped structure, and a stepped hole is provided in the male plug rear base 12 , and the stepped portion of the male plug pin housing 141 is limited by the stepped hole.

[0033] A groove is provided at the portion where the male plug pin housing 141 slides into the male plug rear base 12, and an O-ring is installed in the groove for sealing.

[0034] A male flat key 16 is protruded from the male pin housing 141 at a position corresponding to the housing groove, and a male key slot 17 is provided in the male front base 11. The male flat key 16 cooperates with the male key slot 17 to achieve precise docking of the male pin 14 and the male front base 11.

[0035] Two male arc-shaped positioning blocks 18 are arranged on the male rear base 12, and the two points determine a plane. Two male arc-shaped positioning holes are arranged on the male pin mounting plate. The male rear base and the male pin mounting plate are precisely aligned through the cooperation of the male arc-shaped positioning blocks 18 and the male arc-shaped positioning holes. The arc shape of the male arc-shaped positioning block 18 is designed to avoid high pressure underwater, so the angular structure is avoided.

[0036] The portion of the male pin housing 141 extending out of the male pin mounting plate 13 is processed with an external thread, and the male pin fixing nut 15 is processed with an internal thread. The male pin fixing nut 15 is tightened on the threaded end of the male pin housing 141 to prevent the male pin 14 from sliding back and forth.

[0037] The female pin 2 includes a female front base 21, a female rear base 22, a female pin mounting plate 23, a female optical fiber pin assembly 24 and a female pin fixing nut 25. One end of the female optical fiber pin assembly 24 is key-connected with the female front base 21, and the other end of the female optical fiber pin assembly 24 passes through the female rear base 22 and the female pin mounting plate 23 in sequence and is threadedly connected with the female pin fixing nut 25, thereby fixing the female pin mounting plate 23 and the female rear base 22.

[0038] The female optical fiber pin assembly 24 includes a female pin housing 241, a female optical fiber jumper 242, a C-shaped ceramic sleeve 243, an optical fiber steel seat 244 and a spring 245. A female flat key 26 is protruded from one end of the female pin housing 241 close to the male pin 1, and a female keyway 27 is opened in the female front base. The female pin 24 and the female front base 21 are precisely connected by the flat key cooperation of the female flat key 26 and the female keyway 27; the other end of the female pin housing 241 is processed with an internal thread, and the female pin fixing nut 25 protrudes to form an external thread end, which passes through the female pin mounting plate 23 and is threadedly connected to the female pin housing 241.

[0039] The female pin housing 241 is a hollow structure, and a radial protrusion 246 is formed in the female pin housing. The radial protrusion 246 divides the interior of the female pin housing 241 into a first chamber and a second chamber. The C-shaped ceramic sleeve 243 is located in the first chamber. There is a gap between the C-shaped ceramic sleeve 243 and the female pin housing 241 to facilitate the insertion of the male pin 1. The optical fiber steel seat 244 is installed in the second chamber. The optical fiber steel seat 244 is a hollow structure for passing the female optical fiber jumper 242. The ceramic core of the female optical fiber jumper 242 is bonded and fixed in the C-shaped ceramic sleeve 243. The optical fiber steel seat 244 slides into one end of the female rear base 22 to form a step. The spring 245 is mounted on the thin rod position of the optical fiber steel seat 244. One end of the optical fiber steel seat 244 abuts against the radial protrusion 246, and the other end of the optical fiber steel seat 244 abuts against the spring 245.

[0040] A female arc-shaped positioning block 28 is provided on the female rear base 22, and a female arc-shaped positioning hole is provided on the female pin mounting plate. The female rear base and the female pin mounting plate can be precisely docked by the cooperation between the female arc-shaped positioning block 28 and the female arc-shaped positioning hole.

[0041] A groove is provided on one end of the female plug pin housing 241 that slides into the female plug rear base 22, and a rubber ring for sealing is installed in the groove.

[0042] The material of the male rear base 12 and the female rear base 22 is ceramic, which has the characteristics of high hardness and not easy to deform; the material of the male front base 11 and the female front base 12 is peek (polyetheretherketone), which has the characteristics of pressure resistance, corrosion resistance and good self-lubrication.

[0043] The plugging and unplugging process of the male pin 1 and the female pin 2 is as follows: when plugged in, after the end faces of the male front base 11 and the female front base 12 begin to contact, the male front base 11 slides backward, the male pin shell 141 is exposed and inserted into the female pin shell 241 for primary alignment, and at the same time, the C-shaped ceramic sleeve 243 enters the plugging area 143 inside the male pin shell 141 to increase accuracy. The ceramic core of the male pin shell 141 and the C-shaped ceramic sleeve 243 are interference fit to continue to increase accuracy, and during this insertion process, the optical fiber steel seat 244 is forced to slide backward, and the spring 245 at the tail of the optical fiber steel seat 244 is compressed and deformed to generate a reaction force to tightly connect the male core and the female core to complete the plugging. When pulled out, the male pin 1 and the female pin 2 respectively withdraw from the mating position backwards, and the spring 245 gradually relaxes. When the male pin 1 completely withdraws from the inside of the female pin 2, the optical fiber steel seat 244 pops out and resets.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0046] The above specific implementations of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An underwater wet plug-in precision docking optical fiber pin, characterized in that: It includes a male pin and a female pin for coaxial plug-in connection; wherein, The male plug pin includes a male front base, a male rear base, a male plug pin mounting plate, a male optical fiber plug pin assembly and a male plug pin fixing nut. One end of the male optical fiber plug pin assembly is key-connected with the male front base, and the other end of the male optical fiber plug pin assembly passes through the male rear base and the male plug pin mounting plate in sequence and is threadedly connected with the male plug pin fixing nut, thereby fixing the male plug pin mounting plate and the male rear base; The female plug pin includes a female front base, a female rear base, a female plug pin mounting plate, a female optical fiber plug pin assembly and a female plug pin fixing nut. One end of the female optical fiber plug pin assembly is key-connected with the female front base, and the other end of the female optical fiber plug pin assembly passes through the female rear base and the female plug pin mounting plate in sequence and is threadedly connected with the female plug pin fixing nut, thereby fixing the female plug pin mounting plate and the female rear base; The male optical fiber pin assembly includes a male pin housing and a male optical fiber jumper. The male pin housing is a hollow structure for passing the male optical fiber jumper. A housing groove is formed at the end of the male pin housing close to the female pin. The ceramic ferrule of the male optical fiber jumper is bonded and fixed in the housing groove to form an insertion area. The female optical fiber pin assembly includes a female pin housing, a male optical fiber jumper, a C-shaped ceramic sleeve, an optical fiber steel seat and a spring. The female pin housing is a hollow structure. A radial protrusion is formed in the female pin housing to divide the interior of the female pin housing into a first chamber and a second chamber. The C-shaped ceramic sleeve is installed in the first chamber, and the optical fiber steel seat is installed in the second chamber. One end of the optical fiber steel seat abuts against the radial protrusion, and the other end of the optical fiber steel seat abuts against the spring. The optical fiber steel seat is a hollow structure for passing through the female optical fiber jumper. The ceramic ferrule of the female optical fiber jumper is adhesively fixed in the C-shaped ceramic sleeve.

2. The underwater wet-plugging precision docking optical fiber pin according to claim 1, characterized in that: The male plug pin housing is a stepped structure, and a stepped hole is provided in the male plug rear base, and the stepped portion of the male plug pin housing is limited by the stepped hole.

3. The underwater wet-plugging precision docking optical fiber pin according to claim 1 or 2, characterized in that: A male flat key is protruding from the male pin shell at a position corresponding to the shell groove, and a male key slot is opened in the male front base. The male pin and the male front base are docked by the cooperation of the male flat key and the flat key of the male key slot.

4. The underwater wet-plugging precision docking optical fiber pin according to claim 1, characterized in that: A male arc-shaped positioning block is arranged on the male rear base, and a male arc-shaped positioning hole is arranged on the male pin mounting plate. The male rear base and the male pin mounting plate are docked by the cooperation between the male arc-shaped positioning block and the male arc-shaped positioning hole.

5. The underwater wet-plugging precision docking optical fiber pin according to claim 1, characterized in that: The portion of the male pin housing extending out of the male pin mounting plate is processed with an external thread, and the male pin fixing nut is processed with an internal thread.

6. The underwater wet-plugging precision docking optical fiber pin according to claim 1, characterized in that: A female flat key is protruding from the female pin shell at a position corresponding to the C-shaped ceramic sleeve, and a female key slot is opened in the female front base. The female pin and the female front base are docked by the cooperation of the female flat key and the flat key of the female key slot.

7. The underwater wet-plugging precision docking optical fiber pin according to claim 1, characterized in that: The female pin housing is processed with an internal thread at the end corresponding to the spring, and the female pin fixing nut protrudes to form an external thread end, and the external thread end passes through the female pin mounting plate and is threadedly connected to the female pin housing.

8. The underwater wet-plugging precision docking optical fiber pin according to claim 7, characterized in that: A step is formed at one end of the optical fiber steel seat that slides into the rear base of the female head, and the spring is sleeved on the step.

9. The underwater wet-plugging precision docking optical fiber pin according to claim 1, characterized in that: A female arc-shaped positioning block is arranged on the female rear base, and a female arc-shaped positioning hole is arranged on the female pin mounting plate. The female rear base and the female pin mounting plate are docked by the cooperation between the female arc-shaped positioning block and the female arc-shaped positioning hole.

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