CN218728166U

CN218728166U - Airtight optical fiber connector

Info

Publication number: CN218728166U
Application number: CN202222732009.4U
Authority: CN
Inventors: 倪榕; 李云; 朱家民
Original assignee: Shenzhen Fenghua Zhilian Technology Co ltd
Current assignee: Shenzhen Fenghua Zhilian Technology Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-03-24
Anticipated expiration: 2032-10-17

Abstract

The utility model relates to an airtight optical fiber connector, which comprises a connector and an adapter; the connector comprises a connecting assembly, a mounting tube seat and a sealing sleeve, wherein an optical fiber penetrates through the connecting assembly, and the mounting tube seat is sleeved outside the connecting assembly and is in sealing fit with the connecting assembly; the sealing sleeve is sleeved outside the mounting tube seat and is in sealing fit with the mounting tube seat; the connector comprises a plugging end which is plugged with the adapter, a first plugging space is formed between the periphery of the connecting component positioned at the plugging end and the mounting tube seat, and a second plugging space is formed between the periphery of the mounting tube seat positioned at the plugging end and the sealing sleeve; the adapter comprises an adapter seat and a plug connector, the adapter seat comprises a first plug sleeve inserted in the first plug space and a second plug sleeve inserted in the second plug space, and the plug connector is in communication with the connecting component after being in butt joint; the second plug bush is in sealing fit with the sealing sleeve, the mounting tube seat is fixedly clamped with the second plug bush, the connector and the adapter are connected, the sealing performance is good, and the plugging is convenient.

Description

Airtight optical fiber connector

Technical Field

The utility model relates to an optical fiber communication field, more specifically say, relate to an air tightness fiber connector.

Background

With the development of the optical fiber communication industry and FTTX, the laying and wiring of optical communication lines can be subjected to different harsh environments, such as high temperature, low temperature, humidity, ultraviolet light, chemical corrosion and the like, and the common connector cannot adapt to the harsh environments; meanwhile, the optical fiber needs to be connected quickly, be plug and play and have stable and reliable optical fiber splicing quality in the optical fiber wiring process.

Some optical fiber connectors use a non-airtight structure, the optical connection of the structure has strict requirements on construction operation, the connector needs to be used in an environment providing water resistance and sun protection, and the connection product is relatively simple and cheap, but has high construction cost. Some fiber optic connectors employ hermetic optical connectors. The airtight connection has strong weather resistance, can prevent water and sun, has high product cost, but has low construction requirement and low construction cost.

There are two main categories of hermetic optical fiber connection technology: one adopts threaded connection, the scheme uses a sealing element and a thread locking structure, pressure is applied to the sealing element by gradually screwing threads, and the sealing element deforms to achieve the purpose of sealing the connector; one type of connector employs a rotating clamp arrangement that uses a seal and a rotating clamp arrangement to achieve a compression seal. The former proposal has stable sealing performance, but has larger volume and troublesome operation due to the thread structure; the latter spinning solution is less bulky but relatively less stable.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide an air tightness fiber connector.

The utility model provides a technical scheme that its technical problem adopted is: constructing an airtight optical fiber connector, which comprises a connector and an adapter;

the connector comprises a connecting assembly, a mounting tube seat and a sealing sleeve, wherein an optical fiber penetrates through the connecting assembly, the mounting tube seat is sleeved outside the connecting assembly and is in sealing fit with the connecting assembly, and the sealing sleeve is sleeved outside the mounting tube seat and is in sealing fit with the mounting tube seat;

the connector comprises a plugging end which is plugged with the adapter, a first plugging space is formed between the periphery of the connecting component positioned at the plugging end and the mounting tube seat, and a second plugging space is formed between the periphery of the mounting tube seat positioned at the plugging end and the sealing sleeve;

the adapter comprises an adapter seat and a plug connector, the adapter seat comprises a first plug sleeve and a second plug sleeve, the first plug sleeve is used for being plugged into the first plug space, the second plug sleeve is used for being plugged into the second plug space, and the plug connector is in butt joint with the connecting assembly so as to communicate after being conducted;

the second plug bush is in sealing fit with the sealing sleeve, and the mounting tube seat is clamped and fixed with the second plug bush so as to connect the connector with the adapter.

In some embodiments, the connecting assembly includes a supporting seat fixed in the mounting tube seat in a clamping manner, and the mounting tube seat is provided with a bayonet for clamping the supporting seat.

In some embodiments, the connection assembly further comprises a positioning tube which is in sealing fit with the tail end of the mounting tube seat far away from the plugging end, and the positioning tube is sleeved on the optical fiber.

In some embodiments, the first plug bush has an internal bore profile corresponding to a corresponding profile of the connection assembly.

In some embodiments, the mounting tube seat is provided with an elastic buckle, and the second plug bush is provided with a clamping hole for clamping the elastic buckle.

In some embodiments, the mounting tube seat is provided with a guide structure for guiding the insertion of the connector.

In some embodiments, the guide structure includes a guide groove extending from the insertion end to the other end of the mounting socket in the axial direction, and the adaptor is provided with a positioning bone for being snapped into the guide groove.

In some embodiments, the guide groove includes a guide opening and a positioning groove, which are sequentially arranged from the insertion end to the other end along the axial direction, and the width of the guide opening gradually decreases toward the positioning groove.

In some embodiments, the adapter is further provided with a retainer ring for abutting against an end of the sealing sleeve.

In some embodiments, the outer ring of the second plug bush is fitted with a second sealing ring for sealing engagement with the inner wall surface of the sealing sleeve; and/or a second sealing ring which is used for being matched with the periphery of the outer wall surface of the second plug-in sleeve in a sealing mode is arranged on the inner wall surface of the sealing sleeve.

Implement the utility model discloses an airtight fiber connector has following beneficial effect: inside multilayer cover that forms of gas tightness fiber connector is established, and is sealed between outermost sealing sleeve and the second grafting cover, lets inside coupling assembling can and outside abundant isolation, avoids dust, water entering, still can prevent the harmful substance invasion in the air, and the leakproofness is good, and connector and adapter adopt the mode of block to connect fixedly, and connected mode is simple convenient stable, directly cup joints after connecting, does not influence the leakproofness.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic diagram of an assembly structure of an airtight optical fiber connector according to an embodiment of the present invention;

fig. 2 is an exploded view of the hermetic optical fiber connector of fig. 1;

FIG. 3 is a schematic view of the hermetic fiber optic connector of FIG. 2 shown prior to mating of the connector and the adapter;

FIG. 4 is an exploded view of the hermetic fiber optic connector of FIG. 1 prior to mating of the connector and the adapter;

fig. 5 is an exploded view of the hermetic optical fiber connector of fig. 4 from another angle before the connector and the adapter are plugged.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the hermetic optical fiber connector according to a preferred embodiment of the present invention includes a connector 1 and an adapter 2, wherein the connector 1 is plugged into the adapter 2 to realize optical communication.

Specifically, as shown in fig. 3 to 5, in some embodiments, the connector 1 includes a connection assembly 11, a mounting tube seat 12, and a sealing sleeve 13, further, the mounting tube seat 12 is sleeved outside the connection assembly 11 and is in sealing fit with the connection assembly 11, the sealing sleeve 13 is sleeved outside the mounting tube seat 12 and is in sealing fit with the mounting tube seat 12, preferably, a first sealing ring 124 sleeved on an outer wall surface of the mounting tube seat 12 is disposed on an inner side of one end of the sealing sleeve 13, which is away from the adapter, and the sealing sleeve 13 is in sealing fit with the first sealing ring 124 to achieve sealing with the mounting tube seat 12. The connecting component 11 is provided with the optical fiber 3 in a penetrating way and can be used for butt-joint communication with the optical fiber 3 on the adapter 2.

In addition, the connector 1 includes a plug end a to be plugged with the adapter 2, a first plug space B is formed between the periphery of the connecting component 11 at the plug end a and the mounting tube seat 12, and a second plug space C is formed between the periphery of the mounting tube seat 12 at the plug end a and the sealing sleeve 13.

The adapter 2 comprises an adapter seat 21 and a plug 22, the adapter seat 21 comprises a first plug sleeve 211 for plugging into the first plug space B and a second plug sleeve 212 for plugging into the second plug space C, and the plug 22 is connected with the connecting component 11 for communication after conduction.

After the first plug bush 211 is plugged into the first plug space B and the second plug bush 212 is plugged into the second plug space C, the first plug bush and the second plug bush are sleeved with each other, the adjacent side walls can be sealed after being attached, furthermore, the second plug bush 212 is in sealing fit with the sealing sleeve 13, and the mounting tube seat 12 is fixedly clamped with the second plug bush 212 so as to connect the connector 1 with the adapter 2.

Inside multilayer cover that forms of gas tightness fiber connector is established, and is sealed between outermost seal sleeve 13 and the second grafting cover 212, lets inside coupling assembling 11 can with outside abundant isolation, avoids dust, water to get into, still can prevent the harmful substance invasion in the air, the leakproofness is good, and connector 1 and adapter 2 adopt the mode of block to connect fixedly, and the connected mode is simple convenient stable, directly cup joints after connecting, does not influence the leakproofness.

In some embodiments, the mating surfaces of the first plug bush 211, the second plug bush 212, the mounting tube seat 12, and the sealing sleeve 13 are all cylindrical, so as to facilitate the sealing after plugging. Preferably, the outer ring of the second plug bush 212 is fitted with a second sealing ring 213 for sealing engagement with the inner wall surface of the sealing sleeve 13, so that the direct plug-in engagement sealing performance between the outermost sealing sleeve 13 and the second plug bush 212 can be further improved. Of course, the inner wall surface of the seal sleeve 13 may be provided with the second seal ring 213 for sealing engagement with the outer wall surface peripheral ring of the second plug bush 212, or both of the above-described sealing means may be provided.

In order to improve the sealing performance, the first plug bush 211 and the second plug bush 212 are integrally formed, so that the matching surface of assembly is reduced, and the sealing performance is improved. Further, still be equipped with the retaining ring 214 that is used for leaning on with the tip of sealing sleeve 13 on the adaptation seat 21, can carry out spacingly to the grafting position of connector 1, still can realize sealed tentatively after the tip cooperation with sealing sleeve 13.

The connection assembly 11 includes a support seat 111 fixed in the installation tube seat 12 in a snap-fit manner, a butt joint 112 installed on the support seat 111, and a positioning tube 113 located at a tail end of the installation tube seat 12 away from the insertion end a, and further, in some embodiments, a sealing hose (not shown) may be provided outside the tail end of the installation tube seat 12, the sealing hose may be wrapped on the optical fiber 3 penetrating through the tail end of the installation tube seat 12, and the sealing hose is heated and then shrunk onto the installation tube seat 12 and the optical fiber 3, so that a hole at the tail end of the installation tube seat 12 and the optical fiber 3 may be sealed.

Correspondingly, the mounting tube seat 12 is provided with two bayonets 121 for the supporting seat 111 to engage, preferably, in this embodiment, the two bayonets 121 are circumferentially arranged, the supporting seat 111 is mounted in the mounting tube seat 12 and then mutually engaged and fixed, the positioning tube 113 is sleeved on the optical fiber 3, the optical fiber 3 passes through the positioning tube 113 and then passes through the supporting seat 111 and is fixed to the butt joint 112, and passes through the butt joint 112 to be in butt joint with the adapter 2.

Further, in some embodiments, the elastic clip 122 is disposed on the mounting tube seat 12, and the clip hole 2121 for the elastic clip 122 to clip is disposed on the second plug sleeve 212, so as to position the connection head 1 and the adapter 2 and prevent the connection head 1 from being removed. Preferably, in this embodiment, two sets of the elastic buckles 122 and the clamp holes 2121 are correspondingly disposed, so that the clamping is more stable and the stress is more balanced. In another embodiment, the second socket 212 may be provided with a snap, and the inner wall surface of the mounting stem 12 may be provided with an engagement groove for snap engagement, so that the engagement and fixation are achieved after the engagement.

Preferably, the inner hole of the first plug bush 211 has an outer shape corresponding to that of the connecting assembly 11, and in this embodiment, the inner hole is square, so that the circumferential positioning and fool-proof effects can be achieved, the plug-in fit can be achieved from a specific circumferential angle, and the plug-in efficiency is improved.

In some embodiments, the mounting socket 12 is provided with a guiding structure 123 for guiding the plugging of the connector 1, when the connector is not completely plugged in place, the guiding structure 123 can play a role of pre-positioning, and in the plugging process, the relative position in the circumferential direction is adjusted until the connector is aligned and can be directly plugged for plugging. Preferably, in this embodiment, two sets of guiding structures are symmetrically disposed on the mounting socket 12, so that the stress is more balanced and the plugging is more stable.

In this embodiment, the guiding structure 123 includes a guiding groove extending from the plugging end a to the other end of the mounting tube seat 12 along the axial direction, the adaptor 2 is provided with a positioning bone 23 for being clipped into the guiding groove, the positioning bone 23 is located between the first plugging sleeve 211 and the second plugging sleeve 212, and during the plugging process, the positioning bone 23 can be matched with the guiding groove to guide and position the insertion of the connector 1.

Preferably, the guide way includes and follows guide opening 1231 and constant head tank 1232 that the axial set gradually to the other end by grafting end A, the width of guide opening 1231 reduces gradually to constant head tank 1232 direction, can just when the cooperation of guide opening 1231 with location bone 23, the circumferential position of connector 1 and adapter 2 can have the dislocation, at the grafting in-process, location bone 23 then can lead to in the constant head tank 1232, let the position of connector 1 and adapter 2 align well earlier before pegging graft, continue to peg graft, connector 1 and adapter 2 peg graft and target in place, location bone 23 then blocks into in the constant head tank 1232.

In this embodiment, the guiding opening 1231 is V-shaped to facilitate the positioning bone 23 to be inserted, and in other embodiments, the guiding groove can also be V-shaped.

It is to be understood that the above-described respective technical features may be used in any combination without limitation.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. An airtight optical fiber connector is characterized by comprising a connector (1) and an adapter (2);

the connector (1) comprises a connecting assembly (11), an installation tube seat (12) and a sealing sleeve (13), wherein an optical fiber (3) penetrates through the connecting assembly (11), the installation tube seat (12) is sleeved outside the connecting assembly (11) and is in sealing fit with the connecting assembly (11), and the sealing sleeve (13) is sleeved outside the installation tube seat (12) and is in sealing fit with the installation tube seat (12);

the connector (1) comprises a plug-in end (A) which is plugged with the adapter (2), a first plug-in space (B) is formed between the periphery of the connecting component (11) positioned at the plug-in end (A) and the mounting tube seat (12), and a second plug-in space (C) is formed between the periphery of the mounting tube seat (12) positioned at the plug-in end (A) and the sealing sleeve (13);

the adapter (2) comprises an adapter seat (21) and a plug connector (22), the adapter seat (21) comprises a first plug sleeve (211) used for being plugged into the first plug space (B) and a second plug sleeve (212) used for being plugged into the second plug space (C), and the plug connector (22) is butted with the connecting component (11) so as to conduct and communicate;

the second plug bush (212) is in sealing fit with the sealing sleeve (13), and the mounting tube seat (12) is clamped and fixed with the second plug bush (212) so as to connect the connector (1) with the adapter (2).

2. The hermetic optical fiber connector according to claim 1, wherein the connection assembly (11) comprises a support seat (111) fixed in the mounting socket (12) in a snap-fit manner, and the mounting socket (12) is provided with a bayonet (121) for the support seat (111) to snap-fit.

3. The hermetic optical fiber connector according to claim 1, wherein the connection assembly (11) further comprises a positioning tube (113) in sealing engagement with a rear end of the mounting tube seat (12) remote from the splicing end (a), the positioning tube (113) being fitted over the optical fiber (3).

4. Hermetic optical fiber connector according to claim 1, characterized in that the inner bore of the first plug bush (211) has an outer shape comparable to the corresponding outer shape of the connection assembly (11).

5. The hermetic optical fiber connector according to claim 1, wherein the mounting socket (12) is provided with an elastic catch (122), and the second socket (212) is provided with a catch hole (2121) for catching the elastic catch (122).

6. Hermetic optical fiber connector according to claim 1, characterized in that the mounting socket (12) is provided with a guiding structure (123) for guiding the plugging of the connector (1).

7. Hermetic optical fiber connector according to claim 6, characterized in that the guiding structure (123) comprises a guiding groove extending axially from the plugging end (A) to the other end of the mounting socket (12), the adapter (2) being provided with a positioning bone (23) for snapping into the guiding groove.

8. The hermetic optical fiber connector according to claim 7, wherein the guide groove includes a guide opening (1231) and a positioning groove (1232) sequentially arranged from the insertion end (a) to the other end in the axial direction, and the width of the guide opening (1231) is gradually decreased toward the positioning groove (1232).

9. Hermetic optical fiber connector according to claim 1, characterized in that the adapter seat (21) is further provided with a collar (214) for abutment with the end of the sealing sleeve (13).

10. The hermetic optical fiber connector according to any one of claims 1 to 9, wherein the outer collar of the second plug bush (212) is fitted with a second sealing ring (213) for sealing engagement with the inner wall surface of the sealing sleeve (13); and/or a second sealing ring (213) which is used for being matched with the periphery of the outer wall surface of the second plug-in sleeve (212) in a sealing mode is arranged on the inner wall surface of the sealing sleeve (13).