CN221078976U - Hot melt type optical fiber connector - Google Patents

Abstract

The utility model relates to a hot-melt optical fiber connector, which comprises a front shell, a rear shell, a core-inserting assembly and a heat-shrinkable tube, wherein the core-inserting assembly comprises a core-inserting body and a connecting piece, and the front shell is sleeved at the front end of the core-inserting body and is in clamping connection with the rear shell through the connecting piece; the rear end of the core body of the inserting core is inserted with an embedded optical fiber, a threading hole for the embedded optical fiber to pass through is formed in the connecting piece, and the heat shrinkage tube is positioned in the rear shell and sleeved on the embedded optical fiber; the front shell is internally provided with a protection component which is used for limiting the core insert core body to be far away from the rear shell along the axial direction of the core insert core body. The hot-melt optical fiber connector designed by the utility model adopts the front shell and the rear shell with hollow structures, and the use of the supporting sleeve, the supporting seat and the elastic piece is matched to limit the movement of the core insert body along the axial direction, so that the embedded optical fiber is protected from being influenced by external stress, the hot-melt optical fiber connector can provide more stable connection in an optical communication system, and the quality and the stability of signal transmission are improved.

Description

Hot melt type optical fiber connector

Technical Field

The utility model relates to the technical field of optical fiber connectors, in particular to a hot-melt optical fiber connector.

Background

In the prior art, with the rapid development of optical communication technology, optical fiber connectors are widely used in optical fiber network construction. Common hot-melt optical fiber connectors such as SC, FC, ST and the like are used in a large amount because of their advantages such as simple structure, reliable connection, low insertion loss and the like. The prior art hot melt fiber optic connectors have problems in structural design and use.

There are some solutions for optical fiber connection stability and optical fiber protection in the market at present, however, there are still some technical problems to be solved. For example, how to achieve a more stable connection in a fiber optic connector, and how to protect the embedded optical fibers from the outside environment.

Disclosure of Invention

In order to solve the problems, the utility model provides a hot-melt optical fiber connector which has reasonable structure, convenient assembly and improved field operation efficiency

In order to achieve the above purpose, the hot-melt optical fiber connector designed by the utility model comprises a front shell, a rear shell, a core insert component and a heat shrinkage tube, wherein the core insert component comprises a core insert body and a connecting piece, the front shell and the rear shell are of hollow structures, and the front shell is sleeved at the front end of the core insert body and is in clamping connection with the rear shell through the connecting piece; the embedded optical fiber is inserted into the rear end of the core body of the core insert, a threading hole for the embedded optical fiber to pass through is formed in the connecting piece, one end, opposite to the core body of the core insert, of the embedded optical fiber penetrates through the threading hole and is arranged in the rear shell, and the heat shrinkage tube is positioned in the rear shell and sleeved on the embedded optical fiber; the front shell is internally provided with a protection component which is used for limiting the core insert core body to be far away from the rear shell along the axial direction of the core insert core body.

In order to protect the embedded optical fiber from external stress, the protection assembly comprises a support sleeve, a support seat and an elastic piece, wherein the support seat is clamped in the front shell, and the support sleeve is used for connecting the core insert core body and the connecting piece and is coaxially arranged with the threading hole, so that the embedded optical fiber penetrates through the support sleeve and the threading hole and then is arranged in the rear shell; the outer side wall of the front end of the supporting sleeve is provided with a skirt edge, the elastic piece is arranged on the supporting sleeve in a penetrating manner, and the front end and the rear end of the elastic piece are respectively propped against the skirt edge and the supporting seat; be equipped with first fixture block on the connecting piece lateral wall, be equipped with the first draw-in groove with first fixture block looks adaptation on the backshell lateral wall, first fixture block passes through first draw-in groove and backshell joint, just the connecting piece is set up to can drive the axial of first fixture block along the lock pin core body and remove at the backshell relatively in first draw-in groove under the exogenic action.

In order to make the structure more compact, the first clamping block is provided with an inclined plane, the highest point of the inclined plane is positioned in the first clamping groove, the lowest point of the inclined plane is positioned in the rear shell, and the inclined direction of the inclined plane from the highest point to the lowest point is opposite to the position of the area where the core insert body is positioned.

In order to easily realize the correct alignment and positioning of the connector assembly, a first positioning block is arranged on the side wall of the connecting piece, a first positioning groove matched with the first positioning block is arranged on the side wall of the rear shell, and the plane of the first positioning groove is perpendicular to the plane of the first clamping groove.

In order to prevent accidental or unnecessary rotation of the core body of the ferrule in the use process, the skirt edge is provided with a second clamping groove, the inner wall of the front shell is provided with a second clamping block, and the second clamping block is clamped with the skirt edge through the second clamping groove so as to limit the support sleeve to rotate along the axis of the support sleeve as the center.

In order to avoid loosening or displacement of the supporting seat, a third clamping block is arranged on the side wall of the supporting seat, a third clamping groove matched with the third clamping block is arranged on the side wall of the front shell, and the third clamping block is connected with the front shell in a clamping mode through the third clamping groove.

In order to reduce the positioning difficulty during assembly, a second positioning block is arranged on the side wall of the supporting seat, a second positioning groove matched with the second positioning block is arranged on the side wall of the front shell, and the plane of the second positioning groove is perpendicular to the plane of the third clamping groove.

In order to provide support to the heat shrinkage tube, the connecting piece rear end is equipped with the tail cover that sets up with the through wires hole is coaxial, heat shrinkage tube one end cover is located on the tail cover.

Further, a bulge is formed on the outer side wall of the tail sleeve.

In order to fix the optical cable, the rear end of the rear shell is provided with a wire clamp, and the inner side of the wire clamp is provided with anti-skid patterns.

The hot-melt optical fiber connector designed by the utility model adopts the front shell and the rear shell with hollow structures, and the use of the supporting sleeve, the supporting seat and the elastic piece is matched to limit the movement of the core insert body along the axial direction, so that the embedded optical fiber is protected from being influenced by external stress, the hot-melt optical fiber connector can provide more stable connection in an optical communication system, and the quality and the stability of signal transmission are improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view showing the mating of the ferrule assembly with the front housing in example 1;

FIG. 3 is an exploded perspective view of FIG. 1;

fig. 4 is a cross-sectional view at A-A in fig. 2.

Wherein: the front shell 1, the second clamping block 11, the second positioning groove 12, the third clamping groove 13, the rear shell 2, the first clamping groove 21, the first positioning groove 22, the wire clamp 23, the ferrule assembly 3, the heat shrinkage tube 4, the ferrule core 5, the embedded optical fiber 51, the connecting piece 6, the threading hole 61, the first clamping block 62, the inclined surface 621, the first positioning block 63, the tail sleeve 64, the protrusion 641, the protection assembly 7, the support sleeve 71, the support seat 72, the third clamping block 721, the second positioning block 722, the elastic piece 73, the skirt 74 and the second clamping groove 741.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Example 1

As shown in fig. 1 to 4, the hot-melt optical fiber connector described in this embodiment includes a front housing 1, a rear housing 2, a ferrule assembly 3 and a heat shrinkage tube 4, where the ferrule assembly 3 includes a ferrule body 5 and a connecting piece 6, the front housing 1 and the rear housing 2 are hollow structures, and the front housing 1 is sleeved at the front end of the ferrule body 5 and is connected with the rear housing 2 by the connecting piece 6 in a clamping manner; the embedded optical fiber 51 is inserted into the rear end of the core insert 5, the connecting piece 6 is provided with a threading hole 61 for the embedded optical fiber 51 to pass through, one end of the embedded optical fiber 51 opposite to the core insert 5 penetrates through the threading hole 61 and is arranged in the rear shell 2, and the heat shrinkage tube 4 is positioned in the rear shell 2 and sleeved on the embedded optical fiber 51; a protection component 7 is arranged in the front shell 1, and the protection component 7 is used for limiting the ferrule core 5 to be far away from the rear shell 2 along the axial direction of the ferrule core. In this embodiment, the ferrule assembly 3 includes the ferrule core, the connecting piece and the protection component 7 in the front housing 1, prefabricate and finish assembling before leaving the factory, this has avoided omission of the connecting component and complexity of on-site assembly, during on-site operation, the pyrocondensation pipe 4 and the backshell 2 wear to locate on the external optic fibre, take out prefabricated front housing 1 assembly, then put into the optical fiber fusion splicer and melt the fine pyrocondensation with the optic fibre that is ready with pre-buried optic fibre 51 to be counterpoint, after the pyrocondensation finishes, suit the backshell 2 on the optic fibre, aim at the connecting piece 66 and realize with the front housing 1 and splice fast, the whole process has realized "plug and play" fast connection, on-site operation is simple and convenient high-efficient, need not to handle the equipment of connecting component, greatly reduced the operation degree of difficulty and error risk, effectively avoid the possibility that the connecting component leaks outward when on-site installation, simultaneously, the protection component 7 in the front housing 1 has ensured that the positions of the ferrule core 5 and the pre-buried optic fibre 51 are stable, ensure its connection quality.

Specifically, as shown in fig. 3 and 4, the protection assembly 7 includes a support sleeve 71, a support seat 72, and an elastic member 73, where the support seat 72 is clamped inside the front shell 1, and the support sleeve 71 is used to connect the ferrule core 5 and the connecting member 6 and is coaxially arranged with the threading hole 61, so that the embedded optical fiber 51 penetrates through the support sleeve 71 and the threading hole 61 and is then placed inside the rear shell 2; the outer side wall of the front end of the supporting sleeve 71 is provided with a skirt 74, the elastic piece 73 is arranged on the supporting sleeve 71 in a penetrating way, and the front end and the rear end of the elastic piece 73 are respectively propped against the skirt 74 and the supporting seat 72; the connecting piece 6 is provided with a first clamping block 62 on the side wall, the side wall of the rear shell 2 is provided with a first clamping groove 21 matched with the first clamping block 62, the first clamping block 62 is connected with the rear shell 2 in a clamping way through the first clamping groove 21, and the connecting piece 6 is arranged to drive the first clamping block 62 to move relative to the rear shell 2 in the first clamping groove 21 along the axial direction of the core insert core body 5 under the action of external force. By means of the structural design, the support sleeve 71 is used for fixing the core-inserting core 51 and the connecting piece 6 to prevent relative displacement of the core-inserting core 51 and the connecting piece, the elastic piece 73 is supported by the support seat 72 and is always propped against the inner wall of the front shell 1 through the skirt 74, sliding of the core-inserting core 5 is further limited, connection stability of the core-inserting core is guaranteed, the first clamping block 62 and the first clamping groove 21 guarantee reliable connection between the connecting piece 6 and the rear shell 2, when the core-inserting core 5 is subjected to external force, the support sleeve 71 is stressed to compress the elastic piece 73 through the skirt 74, so that the connecting piece 6 can drive the first clamping block 62 to displace in the first clamping groove 21 along the axial direction of the core-inserting core 5, namely, the core-inserting core-1 is retracted into the front shell 1, accordingly damage possibility of the core-inserting core 5 is reduced, connection stability and external force resistance of the connector are guaranteed, and stability problems faced in the use process of the optical fiber connector are solved.

In some embodiments, as shown in fig. 4, the first latch 62 has a slope 621, the highest point of the slope 621 is located in the first latch groove 21, the lowest point of the slope 621 is located in the rear housing 2, and the slope 621 from the highest point to the lowest point is opposite to the location of the area where the ferrule 5 is located. The design of the inclined surface 621 can provide a gradually steeper inclined surface path when the rear housing 2 is inserted into the connecting piece 6, which helps to guide the interface part of the rear housing 2 to gradually move from the highest point to the lowest point, so as to ensure that the rear housing 2 is correctly clamped in place, and meanwhile, the design of the inclined surface 621 can ensure the reliable connection between the connecting piece 6 and the rear housing 2, and simultaneously, can provide enough movable space for the first clamping block 62 during the action of the protection component 7 so as to reduce the opening size of the second clamping groove 21, so as to ensure that the rear housing 2 is more compact in structure.

In some embodiments, as shown in fig. 1 and fig. 3, a first positioning block 63 is disposed on a side wall of the connecting piece 6, a first positioning groove 22 adapted to the first positioning block 63 is disposed on a side wall of the rear housing 2, and a plane of the first positioning groove 22 is perpendicular to a plane of the first clamping groove 21. The design of the first positioning block 63 and the first positioning groove 22 can provide accurate positioning and alignment when the rear housing 2 is inserted into the connecting member 6, which helps to prevent reverse direction connection, reduces complexity and time of assembly, and the design in which the plane of the first positioning groove 22 is perpendicular to the plane of the first clamping groove 21, i.e., the first clamping block 62 on the connecting member 6 is not on the same side of the connecting member 6 as the first positioning block 63, which can enhance stability of connection.

In some embodiments, as shown in fig. 1 and 3, the skirt 74 is provided with a second clamping groove 741, the inner wall of the front shell 1 is provided with a second clamping block 11, and the second clamping block 11 is clamped with the skirt 74 through the second clamping groove 741 so as to limit the support sleeve 71 to rotate along the axis thereof as the center. The design of the second block 11 and the second block groove 741 limits the possibility of the support sleeve 71 rotating along its axis, which prevents the ferrule body 5 from being accidentally or unnecessarily rotated during use, thereby stabilizing the internal structure of the connector and the position of the preformed optical fiber 51.

In some embodiments, as shown in fig. 1 and 3, in order to avoid loosening or displacement of the supporting seat 72, a third clamping block 721 is disposed on a side wall of the supporting seat 72, a third clamping groove 13 adapted to the third clamping block 721 is disposed on a side wall of the front shell 1, and the third clamping block 721 is clamped with the front shell 1 through the third clamping groove 13. This helps to ensure that the support base 72 is in the correct position, giving full play to its positioning and stabilizing functions. In this embodiment, in order to reduce positioning difficulty during assembly, the side wall of the supporting seat 72 is provided with a second positioning block 722, the side wall of the front housing 1 is provided with a second positioning slot 12 adapted to the second positioning block 722, and a plane of the second positioning slot 12 is perpendicular to a plane of the third clamping slot 13.

In some embodiments, as shown in fig. 4, in order to provide support for the heat shrinkable tube 4, a tail sleeve 64 coaxially disposed with the threading hole 61 is disposed at the rear end of the connecting piece 6, and one end of the heat shrinkable tube 4 is sleeved on the tail sleeve 64. The design of the boot 64 allows an assembler to more easily install the heat shrink tubing 4 properly in the connector while the proper location and support helps simplify the assembly process and reduce problems and errors that may occur during assembly. In this embodiment, as shown in fig. 3, a protrusion 641 is formed on the outer sidewall of the tail sleeve 64. When the heat shrinkable tube 4 is shrunk, the protrusions 641 can increase the contact points with the inner wall surface of the heat shrinkable tube 4, thereby enhancing the fixing effect on the heat shrinkable tube 4, which helps to prevent the heat shrinkable tube 4 from loosening or moving during use of the connector.

In some embodiments, as shown in fig. 1, in order to fix the optical cable, a wire clip 23 is disposed at the rear end of the rear housing 2, and a non-slip pattern is disposed inside the wire clip 23.

The hot melt type optical fiber connector provided by the embodiment adopts the front shell and the rear shell with hollow structures, and the use of the supporting sleeve, the supporting seat and the elastic piece is matched to limit the movement of the core insert body along the axial direction, so that the embedded optical fiber is protected from being influenced by external stress, and the hot melt type optical fiber connector can provide more stable connection in an optical communication system, and improves the quality and stability of signal transmission.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a hot melt type optical fiber connector, includes preceding shell (1), backshell (2), lock pin subassembly (3) and pyrocondensation pipe (4), its characterized in that, lock pin subassembly (3) are including lock pin core body (5) and connecting piece (6), preceding shell (1) and backshell (2) are hollow structure, preceding shell (1) cover is located lock pin core body (5) front end and is connected through connecting piece (6) and backshell (2) block; the embedded optical fiber (51) is inserted into the rear end of the core insert body (5), a threading hole (61) for the embedded optical fiber (51) to pass through is formed in the connecting piece (6), one end, opposite to the core insert body (5), of the embedded optical fiber (51) penetrates through the threading hole (61) and is arranged in the rear shell (2), and the heat shrinkage tube (4) is positioned in the rear shell (2) and sleeved on the embedded optical fiber (51); the front shell (1) is internally provided with a protection component (7), and the protection component (7) is used for limiting the ferrule core body (5) to be far away from the rear shell (2) along the axial direction of the ferrule core body.

2. The hot-melt optical fiber connector according to claim 1, wherein the protection assembly (7) comprises a supporting sleeve (71), a supporting seat (72) and an elastic piece (73), wherein the supporting seat (72) is clamped into the front shell (1), the supporting sleeve (71) is used for connecting the core insert core (5) and the connecting piece (6) and is coaxially arranged with the threading hole (61), so that the embedded optical fiber (51) penetrates through the supporting sleeve (71) and the threading hole (61) and then is arranged in the rear shell (2); the outer side wall of the front end of the supporting sleeve (71) is provided with a skirt (74), the elastic piece (73) is arranged on the supporting sleeve (71) in a penetrating mode, and the front end and the rear end of the elastic piece (73) are respectively propped against the skirt (74) and the supporting seat (72); be equipped with first fixture block (62) on connecting piece (6) lateral wall, be equipped with on backshell (2) lateral wall with first draw-in groove (21) of first fixture block (62) looks adaptation, first fixture block (62) are through first draw-in groove (21) and backshell (2) joint, just connecting piece (6) are set up to can drive first fixture block (62) under the exogenic action and move relative backshell (2) in first draw-in groove (21) along the axial of lock pin core body (5).

3. The hot-melt optical fiber connector according to claim 2, wherein the first clamping block (62) has a slope (621), a highest point of the slope (621) is located in the first clamping groove (21), a lowest point of the slope (621) is located in the rear housing (2), and a direction of inclination of the slope (621) from the highest point to the lowest point is opposite to a position of the region where the ferrule body (5) is located.

4. A hot-melt optical fiber connector according to claim 3, wherein a first positioning block (63) is arranged on the side wall of the connecting piece (6), a first positioning groove (22) adapted to the first positioning block (63) is arranged on the side wall of the rear housing (2), and the plane of the first positioning groove (22) is perpendicular to the plane of the first clamping groove (21).

5. The hot-melt optical fiber connector according to claim 2, wherein the skirt (74) is provided with a second clamping groove (741), the inner wall of the front housing (1) is provided with a second clamping block (11), and the second clamping block (11) is clamped with the skirt (74) through the second clamping groove (741) so as to limit the support sleeve (71) to rotate along the axis thereof as the center.

6. The hot-melt optical fiber connector according to claim 2, wherein a third clamping block (721) is arranged on the side wall of the supporting seat (72), a third clamping groove (13) matched with the third clamping block (721) is arranged on the side wall of the front shell (1), and the third clamping block (721) is clamped with the front shell (1) through the third clamping groove (13).

7. The hot-melt optical fiber connector according to claim 6, wherein a second positioning block (722) is arranged on the side wall of the supporting seat (72), a second positioning groove (12) matched with the second positioning block (722) is arranged on the side wall of the front shell (1), and the plane of the second positioning groove (12) is perpendicular to the plane of the third clamping groove (13).

8. The hot-melt optical fiber connector according to claim 1, wherein a tail sleeve (64) coaxially arranged with the threading hole (61) is arranged at the rear end of the connecting piece (6), and one end of the heat shrinkage tube (4) is sleeved on the tail sleeve (64).

9. The hot melt optical fiber connector according to claim 8, wherein the tail sleeve (64) has a protrusion (641) formed on an outer sidewall thereof.

10. The hot-melt optical fiber connector according to claim 1, wherein a wire clip (23) is provided at the rear end of the rear housing (2), and an anti-slip pattern is provided inside the wire clip (23).