CN114019616A

CN114019616A - Optical fiber connector and optical fiber connecting assembly thereof

Info

Publication number: CN114019616A
Application number: CN202111528969.2A
Authority: CN
Inventors: 陈应东; 蓝曾景
Original assignee: Hangzhou Runzhou Optoelectronic Technology Co ltd
Current assignee: Hangzhou Runzhou Optoelectronic Technology Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-02-08
Also published as: WO2023109098A1

Abstract

The application relates to an optical fiber connector and an optical fiber connecting assembly thereof, wherein the optical fiber connector comprises an inner tube main body for bearing a ferrule assembly and a rotating outer sleeve sleeved outside the inner tube main body, and an annular gap for a connecting seat of an optical fiber adapter to penetrate is formed between the rotating outer sleeve and the inner tube main body; the optical fiber connector comprises an inner tube main body and an outer tube main body, wherein a plug core support used for being inserted into a plug hole of an optical fiber adapter is arranged at one end of the inner tube main body, a plug pin of a plug core assembly penetrates through the plug core support, the plug core support can be inserted into the plug hole of the optical fiber adapter only in a fixed state, a guide ring is arranged at the end part of the plug core support, and the axial projection of the guide ring falls into the axial projection of the plug core support. This application has made things convenient for fiber connector and fiber connection subassembly's assembly for can carry out quick blind mate butt joint.

Description

Optical fiber connector and optical fiber connecting assembly thereof

Technical Field

The application relates to the field of prefabricated optical fiber connectors, in particular to an optical fiber connector and an optical fiber connecting assembly thereof.

Background

Fiber optic connectors are used in fiber optic communication systems to make connections between fiber optic cables, between fiber optic cables and optoelectronic components, and between optoelectronic components. The end faces of two optical fibers to be connected are precisely butted together, so that the light energy output by the transmitting optical fiber can be coupled into the receiving optical fiber to the maximum extent.

As a commonly used optical fiber connection structure on a fiber distribution box, an optical fiber connector is usually in the form of a prefabricated connector, which usually has an optical fiber adapter on the fiber distribution box, and a corresponding optical fiber connector is adopted to axially butt-joint with the optical fiber adapter. Generally, the side of the fiber optic adapter inside the distribution box will be configured as a conventional connector structure such as an SC type connector.

The most common connection mode between the fiber optic adapter and the fiber optic connector on the market today is usually configured as an L-shaped slot type butt joint structure, the center of the adapter is configured as a jack for the axial butt joint of the ferrule assembly, and the outer ring of the adapter is designed with a male connection L-shaped connection slot for the adapter. In the connection process, the ferrule assembly and the jack as well as the connection groove are required to be synchronously ensured to be just opposite to the connection block on the optical fiber connector, so that the axial butt joint between the optical fiber adapter and the optical fiber connector can be realized, and the assembly efficiency is low.

Disclosure of Invention

In order to facilitate assembly between the optical fiber connector and the optical fiber adapter, the application provides an optical fiber connector and an optical fiber connecting assembly thereof.

In a first aspect, the present application provides an optical fiber connector that adopts the following technical solution:

an optical fiber connector comprises an inner tube main body for bearing a ferrule assembly and a rotating outer sleeve sleeved outside the inner tube main body, wherein an annular gap for a connecting seat of an optical fiber adapter to penetrate is formed between the rotating outer sleeve and the inner tube main body;

the optical fiber connector comprises an inner tube main body and an outer tube main body, wherein a plug core support used for being inserted into a plug hole of an optical fiber adapter is arranged at one end of the inner tube main body, a plug pin of a plug core assembly penetrates through the plug core support, the plug core support can be inserted into the plug hole of the optical fiber adapter only in a fixed state, a guide ring is arranged at the end part of the plug core support, and the axial projection of the guide ring falls into the axial projection of the plug core support.

Through adopting above-mentioned technical scheme, at the in-process of being connected foretell fiber connector and corresponding fiber adapter, insert the core support towards the direction of jack and carry out the opposite insertion earlier, the guide ring can not be retrained by the direction of jack and core support and enter into in the jack at first, but when not totally just right between core support and the jack, the core support can not be accurate to inserting in the jack, at this moment, the guide ring still is in the jack and is spacing by the jack and make still can be in a radial spacing state between core support and the fiber adapter. At the moment, the optical fiber connector is rotated, so that the relative position of the ferrule support can be limited in a circular area formed by the guide ring, the relative state between the ferrule support and the jack can be adjusted, the ferrule support can be inserted after the ferrule support and the jack are completely opposite, and the ferrule support does not need to be aligned for many times.

Preferably, the ferrule holder has an inclined surface located in a circumferential direction of the guide ring and connected to the guide ring toward an end surface connected to the guide ring.

By adopting the technical scheme, after the guide ring is inserted into the jack, the axial opposite insertion force is applied to the optical fiber connector, the ferrule support can be corrected under the guiding action of the inclined surface, and the guide ring is approximately positioned at the central position of the jack, so that the ferrule support can be inserted into the jack without long-time radial adjustment when the position of the ferrule support is adjusted to be the same as that of the jack by rotating the ferrule support.

Preferably, the inclined surface is a spherical surface protruding outward.

Through adopting above-mentioned technical scheme, the setting of sphere makes when optical fiber connector docks (have certain angular deviation promptly) with the optic fibre adapter according to axis direction not strictly, and the inclined plane of sphere form still can guarantee to have stable a plurality of contact points with the circumference of jack.

Preferably, the inner wall of the rotating outer sleeve is provided with at least one connecting block for connecting into a connecting groove of an optical fiber adapter, and the rotating outer sleeve axially limits and slides relative to the inner pipe main body to have a first state and a second state;

when the inner pipe body is in a first state, the rotating outer sleeve and the inner pipe body are circumferentially locked relatively;

when in the second state, the rotating outer sleeve freely rotates relative to the inner pipe main body in the circumferential direction;

when the optical fiber adapter is in the first state, the connecting block is opposite to the connecting groove of the optical fiber adapter in the process that the inserting core support is inserted into the inserting hole of the optical fiber adapter.

Through adopting above-mentioned technical scheme, in the rotatory in-process of looking for the position and inserting the jack when the lock pin support, through will rotating overcoat and inner tube main part restriction under first state, make the connecting block can be corresponding rotatory. In the process of designing the optical fiber adapter, the shape of the jack and the shape between the circumferential connecting grooves are fixed, so that the position of the connecting block is correspondingly designed, and when the ferrule support is inserted into the jack, the connecting block and the connecting grooves can be ensured to be in a right alignment state.

Preferably, in the first state, when the ferrule holder is fully inserted into the insertion hole of the fiber optic adapter, the connection block is located in the connection groove of the fiber optic adapter.

Through adopting above-mentioned technical scheme, this kind of mode can be so that when the in-process of needs promotion rotation overcoat, wears to establish the mode in the spread groove through the connecting block, can inject the stroke of rotating the overcoat, and the angle that need not rotate the overcoat is looked for the position again, and efficiency is higher.

Preferably, an elastic member sleeved outside the inner tube main body is clamped between the rotating outer sleeve and the inner tube main body, two ends of the elastic member are respectively connected with the rotating outer sleeve and the inner tube main body, and the elastic member forces the rotating outer sleeve and the inner tube main body to have a tendency of being maintained in the first state.

Through adopting above-mentioned technical scheme, the setting of elastic component can force to rotate overcoat and inner tube main part and maintain first state for in-process of looking for the position to inserting the core support can maintain the synchronous rotation of rotating overcoat and inner tube main part.

Preferably, the outer cover of the inner pipe main body is provided with a sealing ring, when the inner pipe main body is in a first state, the sealing ring is positioned in the annular area and does not contact with the rotating outer cover, when the inner pipe main body is in a second state, the sealing ring is in contact with the rotating outer cover, and the rotating outer cover and the inner pipe main body extrude the sealing ring mutually.

Through adopting above-mentioned technical scheme, promote the in-process of rotating the overcoat at first, the sealing washer can not contact with rotating the overcoat, and makes the drive of rotating the overcoat comparatively smooth and easy, when switching over to the second state in back, still can extrude the sealing washer and make the space between rotation overcoat and the inner tube main part cut off, play sealed effect. Meanwhile, the track of relative rotation between the rotating outer sleeve and the sealing ring in the motion process can be reduced, friction is reduced, and abrasion is reduced.

Preferably, the rotating outer sleeve is further provided with an accommodating cavity communicated with the annular region, a transition guide surface for connecting the accommodating cavity and the annular region is arranged on the inner wall of the rotating outer sleeve, and the cavity wall of the accommodating cavity is obliquely arranged, so that the radial space where the sealing ring is located is gradually reduced in the switching process from the first state to the second state.

Through adopting above-mentioned technical scheme, this kind of setting can be guaranteed the sealing washer in by extruded initial section, can be comparatively smooth and easy enter into the clearance in holding chamber to through the mode that the slope set up, can increase the extrusion force to the sealing washer along with the promotion of rotating the overcoat, improve sealed effect.

Preferably, a positioning key is arranged outside the inner pipe main body, a notch for the positioning key to penetrate is formed in the tail end of the rotating outer sleeve, and the rotating outer sleeve is separated from the positioning key in the switching process from the first state to the second state.

Preferably, one side of the positioning key facing to the direction of inserting into the notch groove is provided with a guide surface.

Preferably, the rotating outer sleeve extends to a direction departing from the annular gap to form a limiting sleeve, and an annular groove for the tail pipe to partially penetrate is formed between the limiting sleeve and the inner pipe main body.

In a second aspect, the present application provides an optical fiber connection assembly, which adopts the following technical solutions:

an optical fiber connecting assembly comprises optical fiber adapters which are axially butted with each other and the optical fiber connector.

In conclusion, the blind mating butt joint between the optical fiber connector and the optical fiber adapter can be realized, and the efficiency is high.

Drawings

FIG. 1 is a schematic diagram of a fiber optic adapter.

Fig. 2 is a schematic structural diagram of an optical fiber connector.

Figure 3 is a schematic view of the ferrule holder guide ring inserted into the receptacle when the ferrule holder is not properly aligned with the receptacle.

Figure 4 is a schematic view of the ferrule holder fully insertable into the receptacle.

FIG. 5 is a schematic view of the structure of the rotating outer sleeve and the inner tubular body in the first state.

FIG. 6 is a schematic view of the structure of the rotating outer sleeve and the inner tubular body in the second state.

FIG. 7 is a schematic view of the first state with the fiber optic connector fully inserted into the fiber optic adapter, wherein the rotating outer sleeve is shown partially cut away to reveal the relative positions of the connector block and the connector slot.

FIG. 8 is a schematic view of the fiber optic connector fully inserted into the fiber optic adapter in a second state, wherein the rotating outer sleeve is shown partially cut away to reveal the relative positions of the connector block and the connector slot.

FIG. 9 is a cross-sectional view of the fiber optic connector in a first state.

FIG. 10 is a cross-sectional view of the fiber optic connector in a second state.

FIG. 11 is a schematic view of a rotating jacket according to one embodiment.

FIG. 12 is an exploded view of the fiber optic connection assembly with both ends of the fiber optic adapter configured in the configuration of a connectorized receptacle.

Description of reference numerals: 1. a base; 2. a connecting seat; 21. a jack; 211. unfilled corners; 22. connecting grooves; 3. rotating the outer sleeve; 4. an inner tube body; 5. a tail pipe; 6. inserting a pin; 7. a ferrule holder; 8. an annular gap; 71. chamfering the inclined plane; 31. connecting blocks; 72. a guide ring; 73. an inclined surface; 22a, a vertical section; 22b, corners; 22c, a transverse segment; 41. a positioning key; 32. notching; 42. a snap ring; 9. an elastic member; 43. a shaft shoulder; 33. an accommodating cavity; 22d, returning to the groove; 10. a seal ring; 34. a transition guide surface; 44. a limit ring table; 34. a limiting sleeve; 35. and a ring groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-12.

The optical fiber connector and the optical fiber adapter are a connector which are adapted and butted with each other, generally, the optical fiber adapter is applied to an optical fiber junction box such as a fiber distribution box, and waterproof sealing of a joint is realized by mutual matching with the optical fiber connector. Referring to fig. 1, the optical fiber adapter includes a base 1 for connecting to a box body of a fiber distribution box, one side of the base 1 extends outward to form a connection seat 2, a plug hole 21 is formed in the center of the connection seat 2, the plug hole 21 is substantially rectangular, but two adjacent vertex angles of the plug hole 21 have an oblique unfilled corner 211, so that a structure matched with the plug hole 21 can be inserted into the plug hole 21 only along the same state. In addition, two connecting grooves 22 are formed on the outer side of the connecting socket 2, and the connecting grooves 22 are substantially L-shaped and are communicated with one end of the connecting socket 2.

Based on this, this application embodiment discloses a fiber connector. Wherein, this fiber connector is used for docking with above-mentioned fiber adapter.

Referring to fig. 2, the optical fiber connector includes a rotating outer sleeve 3, an inner tube body 4, and a tail tube 5 connected to one end of the inner tube body 4, wherein the rotating outer sleeve 3 is coaxially sleeved outside the inner tube body 4 and is located at one side of the tail tube 5. The inner tube main part 4 is used for bearing a penetrating ferrule assembly, the ferrule assembly exposes a contact pin 6 used for butt joint from one end of the inner tube main part 4, a ferrule support 7 fixed at one end of the inner tube main part 4 is sleeved outside the contact pin 6, and the ferrule support 7 is used for penetrating into a jack 21 on the optical fiber adapter. Seen from the end of the optical fiber connector provided with the inserting pin 6, an annular gap 8 for the connecting seat 2 of the optical fiber adapter to penetrate through is formed between the rotating outer sleeve 3 and the inner tube main body 4. After the ferrule holder 7 is fully inserted into the optical fiber adapter, the rotating outer sleeve 3 is sleeved on the outer side of the connecting seat 2 of the optical fiber adapter.

The ferrule holder 7 is configured to be adapted to the insertion hole 21 in a shape similar to that of the insertion hole 21, so that the ferrule holder 7 can be inserted into the insertion hole 21 in only one state, and therefore, the ferrule holder 7 is also substantially rectangular in shape as a whole, and the ferrule holder 7 is also provided with two corresponding bevel chamfers 71 on corresponding portions corresponding to the two chamfers 211 in the insertion hole 21. In addition, the inner wall of the rotating outer sleeve 3 in the annular gap 8 is provided with two connecting blocks 31 correspondingly penetrating through the connecting groove 22, and the optical fiber connector and the optical fiber adapter are axially limited by the advancing of the connecting blocks 31 in the connecting groove 22.

The end part of the ferrule support 7 protrudes out of the end part of the rotating outer sleeve 3, the end part of the ferrule support 7 is integrally provided with a guide ring 72, the guide ring 72 is arranged around the circumference of the contact pin 6 and is coaxial with the contact pin 6, and the inner wall of the guide ring 72 and the inner wall of the ferrule support 7 are on the same cylindrical surface. The axial projection of the outer diameter surface of the guide ring 72 falls within the axial projection of the ferrule holder 7, so that the guide ring 72 can be inserted into the insertion hole 21 in any posture in the circumferential direction. The ferrule holder 7 has an inclined surface 73, which is located in the circumferential direction of the guide ring 72 and is connected to the guide ring 72, at an end surface thereof connected to the guide ring 72. Specifically, the inclined surface 73 is convex and located on the same spherical surface, and gradually increases in diameter in a direction away from the guide ring 72. Preferably, the inclined surface 73 is spherical as a whole so that a plurality of stable contact points with the circumferential direction of the insertion hole can be ensured even when the ferrule holder 7 is axially angularly deflected.

With reference to fig. 3 and 4, on the basis of which the guide ring 72 does not need to be corrected to a fixed position during the insertion of the ferrule holder 7 into the insertion hole 21, it can be seen that with this arrangement of the guide ring 72, the outer diameter thereof is smaller than the radius of the inscribed circle inscribed in the insertion hole 21, so that the guide ring 72 can be inserted into the insertion hole 21 more easily. Subsequently, since the guide ring 72 is not exactly positioned at the center of the ferrule holder 7 in the insertion hole 21, by applying an axial insertion force to the optical fiber connector, the inclined surface 73 in the axial direction of the guide ring 72 abuts against the edge of the insertion hole 21, and the ferrule holder 7 as a whole tends to move toward the center of the insertion hole 21 by the guiding action of the inclined surface 73. When the ferrule holder 7 is rotated (i.e., the inner tube body 4 is driven to rotate) on this basis, the guide ring 72 is always located within the range defined by the insertion hole 21, so that the ferrule holder 7 and the connector holder 2 can be always in a radially relatively limited state, and the guide ring 72 cannot be disengaged from the insertion hole 21 under the application of an axial force. Therefore, by rotating the ferrule holder 7 and making the axial projections of the ferrule holder 7 and the insertion hole 21 coincide with each other, the ferrule holder 7 is inserted into the insertion hole 21 by the axial force.

Therefore, in this embodiment, the ferrule holder 7 can be inserted into the insertion hole 21 on the premise of blind mating only by inserting the guide ring 72 into the insertion hole 21 and rotating the ferrule holder 7, without defining the ferrule holder 7 and the insertion hole 21 to be in a state where axial projections coincide with each other before the insertion of the ferrule holder 7, and the scheme adopted in the embodiment of the present application can realize quick blind mating in terms of assembly efficiency.

Referring to fig. 5 and 6, the rotating outer sleeve 3 can axially limit sliding relative to the inner pipe main body 4, and in the sliding process, the rotating outer sleeve 3 and the inner pipe main body 4 are mutually switched between a first state and a second state. Specifically, when the rotating outer sleeve 3 slides to the end provided with the ferrule holder 7, that is, when the rotating outer sleeve 3 is switched from the first state to the second state, in the first state, the rotating outer sleeve 3 and the inner pipe main body 4 are locked circumferentially relatively, that is, the rotating outer sleeve 3 can only slide axially relatively with the inner pipe main body 4. In the second state, the rotating outer sleeve 3 is freely rotatable circumferentially with respect to the inner pipe body 4.

Referring to fig. 7 and 8, it can be seen that, in the process of rotating the inner pipe body 4 to adjust the ferrule, if the rotating sleeve 3 is in the first state, the rotating sleeve 3 rotates together with the inner pipe body 4. Due to the particularity of the L-shaped coupling groove 22, the rotating sleeve 3 needs to be rotated to slide the coupling block 31 into the transverse section 22c of the coupling groove 22 when the coupling block 31 is located at the corner 22b of the coupling groove 22. Therefore, on this basis, the rotating outer sleeve 3 is defined as the first state during the rotation of the inner pipe body 4, and the connecting block 31 is set in a state of being opposed to the vertical section 22a of the connecting groove 22 when the ferrule holder 7 can be inserted into the insertion hole 21, so that the connecting block 31 can be directly inserted into the connecting groove 22 and reaches the corner 22b of the connecting groove 22 during the switching from the first state to the second state, and at this time, since the rotating outer sleeve 3 in the second state is not restricted by the circumferential rotation, the rotating outer sleeve 3 can be rotated so that the connecting block 31 slides into the horizontal section 22c of the connecting groove 22.

For example, as shown in fig. 7, as an embodiment for convenient implementation, when the ferrule holder 7 is fully inserted into the insertion hole 21, the connecting block 31 may be just inserted into the vertical section 22a of the connecting groove 22 and located at the port. During the axial pushing of the ferrule holder 7, the connecting block 31 is pushed to the corner 22b of the connecting groove 22, and the rotating sleeve 3 is in the second state.

As a specific embodiment, the outer surface of the inner tube main body 4 is integrally provided with a positioning key 41, the tail end of the rotating outer sleeve 3 (i.e. the end departing from the ferrule holder 7) is provided with a notch 32 through which the positioning key 41 passes, the positioning key 41 can be separated from the notch 32 in the process of axially pushing the rotating outer sleeve 3 to slide, when the rotating outer sleeve 3 is located in the second state, the positioning key 41 can be completely separated from the rotating outer sleeve 3, and at this time, the rotating outer sleeve 3 which is not limited by the positioning key 41 can rotate relatively in the circumferential direction. Further, the inner tube body 4 is coaxially engaged with a snap ring 42 for preventing the rotation sleeve 3 from being disengaged.

One side of the orientation of the positioning key 41 towards the direction of inserting the slot 32 is provided with a semicircular arc-shaped guide surface, on one hand, in the rebounding process of the rotating outer sleeve 3, the arc-shaped guide surface can guide the positioning key 41 to penetrate into the slot 32, and when the positioning key 41 is not completely separated from the slot 32, the arc-shaped guide surface is also arranged to guide the positioning key 41 to be separated from the slot 32 in the process of rotating the rotating outer sleeve 3.

Referring to fig. 9 and 10, an elastic member 9 sleeved outside the inner tube body 4 is interposed between the rotating outer sleeve 3 and the inner tube body 4, the elastic member 9 is a compression spring, a shoulder 43 is disposed outside the inner tube body 4, an accommodating cavity 33 communicated with the annular region is disposed in the rotating outer sleeve 3, two ends of the elastic member 9 are respectively abutted to the shoulder 43 of the inner tube body 4 and an axial end wall of the accommodating cavity 33 of the rotating outer sleeve 3, so that the rotating outer sleeve 3 always tends to move in a direction away from the ferrule support 7 under the action of the elastic member 9, and therefore, the rotating outer sleeve 3 and the inner tube body 4 tend to be maintained in the first state.

The outer seal ring 10 that is equipped with the cover and locates the outer seal ring 10 of inner tube main part 4 that just lies in one side that the shaft shoulder 43 deviates from the elastic component 9 outside the inner tube main part 4, seal ring 10 be used for with rotate overcoat 3 and inner tube main part 4 mutual butt in order to cut off to hinder liquid from holding chamber 33 to the flow of annular gap 8. In one embodiment, the seal ring 10 is located in the annular gap 8 and is not in contact with the rotating outer sleeve 3 in the first state, and the seal ring 10 is in contact with the rotating outer sleeve 3 in the second state, and the distance between the rotating sleeve and the inner pipe main body 4 is smaller than the thickness of the seal ring 10 to press the seal ring 10. Specifically, a transition guide surface 34 connecting the accommodating cavity 33 and the annular region is arranged on the inner wall of the rotating outer sleeve 3, the diameter of the accommodating cavity 33 is smaller than that of the annular gap 8 to form a step difference, and in the process of switching the rotating outer sleeve 3 from the first state to the second state, the transition guide surface 34 faces the seal ring 10 and gradually forces the seal ring 10 to be extruded and guided into the accommodating cavity 33 along with abutting. In addition, the cavity wall of the accommodating cavity 33 is obliquely arranged, so that the radial space where the sealing ring 10 is located is gradually reduced in the process of sliding the rotating outer sleeve 3 to the ferrule support 7, and the sealing effect of the sealing ring 10 is improved.

It can be seen that in this embodiment of the construction, the seal ring 10 does not contact and squeeze the inner wall of the rotating outer sleeve 3 during the initial movement of the rotating outer sleeve 3, and when the rotating outer sleeve 3 is pushed to the second state, the rotating outer sleeve 3 squeezes the seal ring 10 to seal the rotating outer sleeve 3. And in match, a sealing ring positioned in the rotating outer sleeve 3 can be embedded at the outer side of the connecting seat 2 of the optical fiber adapter to realize the sealing connection between the optical fiber connector and the optical fiber connector.

Still have the spacing ring platform 44 that is arranged in annular clearance 8 on the inner tube main part 4, after rotating overcoat 3 and being connected with connecting seat 2, spacing ring platform 44 can press from both sides and locate between the diapire of annular clearance 8 and connecting seat 2, carries out the effect that the axial is spacing through rotating the relative fixation between overcoat 3 and the connecting seat 2 and play inner tube main part 4. Meanwhile, the limit ring table 44 is matched with the snap ring 42, so that the rotating outer sleeve 3 and the inner pipe main body 4 cannot be separated from each other through axial sliding of the rotating outer sleeve 3.

Further, referring to fig. 12, as an embodiment that can be realized, it is also possible to provide a stopper sleeve 34 in a direction in which the rotating outer jacket 3 is away from the annular gap 8, and form an annular groove 35 between the stopper sleeve 34 and the inner pipe main body 4, and when in the first state, a part of the end portion of the tail pipe 5 can be inserted into the annular groove 35.

Furthermore, the tail end of the connection groove 22 of the optical fiber adapter may be further provided with a return groove 22d extending in the same direction as the vertical section 22a of the connection groove 22, and after the optical fiber connector is completely butted with the optical fiber adapter, certain errors (especially errors caused by parts such as a limit ring table) may be caused due to the influence of production precision of each component, so that certain deviation may be caused in the overall assembly. Therefore, in order to reduce the rigid force applied to the insertion pin 6, a certain axial floating can exist after the optical fiber adapter is butted with the optical fiber connector through the arrangement of the return groove 22d, and a certain error can exist.

The implementation principle of the optical fiber connector in the embodiment of the application is as follows:

in the connection process, the insertion position of the ferrule support 7 is found through the guide structure at the end part of the ferrule support 7, the rotating outer sleeve 3 can synchronously rotate together with the inner pipe body 4, and when the ferrule support 7 is inserted into the insertion hole 21, the connecting block 31 can be opposite to the connecting groove 22 and inserted into the connecting groove 22 along with the pushing-in of the ferrule support 7, so that the quick blind-matching butt joint of the optical fiber connector and the optical fiber adapter is realized.

The embodiment of the application also discloses an optical fiber connection assembly, which refers to fig. 12 and includes an optical fiber connector and an optical fiber adapter connected with the optical fiber connector. The optical fiber adapter may be the structure disclosed in the above embodiment, or the optical fiber adapter may be constructed in a structure in which both ends are the connection seat 2, so that the optical fiber adapter can axially butt-joint two optical fiber connectors.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An optical fiber connector, characterized in that: the optical fiber connector comprises an inner tube main body (4) used for bearing a ferrule assembly and a rotary outer sleeve (3) sleeved outside the inner tube main body (4), wherein an annular gap (8) for a connecting seat (2) of an optical fiber adapter to penetrate is formed between the rotary outer sleeve (3) and the inner tube main body (4);

one end of the inner tube main body (4) is provided with a ferrule support (7) used for being inserted into a plug hole (21) of the optical fiber adapter, a plug pin (6) of the ferrule assembly penetrates through the ferrule support (7), the ferrule support (7) can be inserted into the plug hole (21) of the optical fiber adapter only in a fixed state, the end of the ferrule support (7) is provided with a guide ring (72), and the axial projection of the guide ring (72) falls into the axial projection of the ferrule support (7).

2. The fiber optic connector of claim 1, wherein: the end face, connected with the guide ring (72), of the ferrule holder (7) is provided with an inclined surface (73) which is positioned in the circumferential direction of the guide ring (72) and connected with the guide ring (72).

3. The fiber optic connector of claim 2, wherein: the inclined surface (73) is a spherical surface protruding outwards.

4. The fiber optic connector of claim 1, wherein: the inner wall of the rotating outer sleeve (3) is provided with at least one connecting block (31) used for being connected into a connecting groove (22) of an optical fiber adapter, and the rotating outer sleeve (3) axially limits and slides relative to the inner pipe main body (4) to have a first state and a second state;

when in the first state, the rotating outer sleeve (3) and the inner pipe main body (4) are locked relatively in the circumferential direction;

in the second state, the rotating outer sleeve (3) freely rotates along the circumferential direction relative to the inner pipe main body (4);

when the optical fiber adapter is in the first state, the connecting block (31) is opposite to the connecting groove (22) of the optical fiber adapter in the process that the ferrule support (7) is inserted into the insertion hole (21) of the optical fiber adapter.

5. The fiber optic connector of claim 4, wherein: in the first state, when the ferrule holder (7) is fully inserted into the insertion hole (21) of the optical fiber adapter, the connecting block (31) is located in the connecting groove (22) of the optical fiber adapter.

6. The fiber optic connector of claim 4, wherein: rotate overcoat (3) with press from both sides between inner tube main part (4) and be equipped with elastic component (9) that the cover was located outside inner tube main part (4), the both ends of elastic component (9) are connected with rotation overcoat (3) and inner tube main part (4) respectively, just elastic component (9) force rotate overcoat (3) and inner tube main part (4) have the trend of maintaining under the first state.

7. The fiber optic connector of claim 4, wherein: inner tube main part (4) overcoat is equipped with sealing washer (10), and when under the first state, sealing washer (10) be located in the annular region and with rotate overcoat (3) contactless, when under the second state, sealing washer (10) with rotate overcoat (3) and contact, just rotate overcoat (3) with inner tube main part (4) extrusion sealing washer (10) each other.

8. The fiber optic connector of claim 7, wherein: the rotating outer sleeve (3) is further provided with an accommodating cavity (33) communicated with the annular region, a transition guide surface (34) connecting the accommodating cavity (33) and the annular region is arranged on the inner wall of the rotating outer sleeve (3), and the cavity wall of the accommodating cavity (33) is obliquely arranged so that the radial space where the sealing ring (10) is located is gradually reduced in the switching process from the first state to the second state.

9. The fiber optic connector of claim 4, wherein: the inner tube main part (4) is provided with navigation key (41) outward, the tail end of rotating overcoat (3) has scarce groove (32) that supplies navigation key (41) to wear to establish, and at the switching process of first state to second state, rotating overcoat (3) and navigation key (41) break away from each other.

10. The fiber optic connector of claim 9, wherein: one side of the positioning key (41) facing the direction of inserting into the notch groove (32) is provided with a guide surface.

11. The fiber optic connector of claim 4, wherein: rotate overcoat (3) and extend to the direction of keeping away from annular gap (8) place and have stop collar (34), be formed with between stop collar (34) and inner tube main part (4) and be used for supplying tail pipe (5) part to wear to establish annular (35).

12. An optical fiber connection assembly, characterized by: comprising optical fibre adapters axially abutting each other and an optical fibre connector according to any of claims 1-11.