Optical fiber connector

Abstract

An optical fiber connector, comprising a connector body (100), an outer housing sleeve (200), and a tail housing sleeve (300). The front end of the connector body (100) is provided with an inner core (140) configured to be connected to a mating member; the outer housing sleeve (200) is slidably sleeved on the connector body (100); the tail housing sleeve (300) comprises a gripping portion (310) and a connection portion (320) which is connected to the outer housing sleeve (200); the connection portion (320) extends forward from the gripping portion (310), and the gripping portion (310) is slidably sleeved on the connector body (100); the connection portion (320) is configured to, when the tail housing sleeve (300) is pulled in a direction moving away from the inner core (140), apply a force to the outer housing sleeve (200) in a direction moving away from the mating member.

Description

Optical fiber connector

[0001] This application claims priority to the Chinese patent application No. 202421579481.1 filed on July 5, 2024 with the Chinese Patent Office, the whole content of the above application is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of optical fiber equipment, for example, to an optical fiber connector. BACKGROUND

[0003] With the rapid development of information technology, the demand for optical communication products is increasing worldwide, and the optical communication industry has gradually become one of the most important industries in the informationization process. In the optical transmission system, the optical fiber connector becomes an important part of connecting the optical fiber. When used, the connection body of the optical fiber connector is inserted into the adapter to be locked with the adapter, and the outer frame sleeve set on the connector body can be pulled backward to release the locking of the connector body and the adapter.

[0004] When the optical fiber connectors on the adapter are relatively dense, the distance between different optical fiber connectors is small, and it is not convenient to stretch the fingers backward to pull the outer frame sleeve. For this reason, some optical fiber connectors are provided with a pull rod, the pull rod is arranged on the outside of the connector body, and one end of the pull rod is connected with the outer frame sleeve. Pulling the other end of the pull rod can pull the outer frame sleeve to move backward, which is convenient to operate. However, a gap is formed between the pull rod and the connector body, which causes the optical cables led out of the adjacent optical fiber connectors to be easily clamped into the gap and intertwined, thereby being inconvenient to arrange, and the optical cables are easily clamped and broken. SUMMARY

[0005] The present application provides an optical fiber connector to solve the problem that the optical cables are easily clamped into the gap between the pull rod and the connector body in the related art, which causes the optical cables to be difficult to arrange and even be clamped and broken.

[0006] An optical fiber connector, comprising: a connector body, a front end of the connector body is provided with an inner core configured to be connected with a mating piece;

[0007] an outer frame sleeve, which is slidably sleeved on the connector body;

[0008] a tail frame sleeve, comprising a holding part and a connecting part connected with the outer frame sleeve, the connecting part extends forward from the holding part, and the holding part is slidably sleeved on the tail end of the connector body; the connecting part is configured to apply a force away from the mating piece to the outer frame sleeve when the tail frame sleeve is pulled away from the inner core.

[0009] As an optional technical scheme of the optical fiber connector, the connecting part comprises a connecting arm extending forward from the holding part and a hooking part at the front end of the connecting arm, and the outer frame is provided with an abutting part which abuts against the hooking part and is located at the rear side of the hooking part.

[0010] As an optional technical scheme of the optical fiber connector, the connecting arm is an elastic arm, the hooking part is perpendicular to the extension direction of the connecting arm, the outer frame is provided with an abutting groove, and the rear side wall of the abutting groove forms at least a part of the abutting part, and the hooking part is located in the abutting groove.

[0011] As an optional technical scheme of the optical fiber connector, the outer frame is provided with a first stop protrusion in the radial direction, and the rear side wall of the abutting groove and part of the front wall of the first stop protrusion form the abutting part.

[0012] As an optional technical scheme of the optical fiber connector, the hooking part is provided with a guide part for guiding the hooking part into the abutting groove, and the guide part extends forward and is inclined to the axis of the outer frame.

[0013] As an optional technical scheme of the optical fiber connector, the outer periphery of the connector body is provided with a sliding groove, one end of the connecting arm close to the holding part is provided with a reinforcing protrusion, and the reinforcing protrusion is arranged in the sliding groove.

[0014] As an optional technical scheme of the optical fiber connector, the outer periphery of the connector body is provided with a sliding groove, and the connecting part is slidably arranged in the sliding groove.

[0015] The connecting part is provided with at least four connecting parts which are arranged around the axis of the connector body.

[0016] As an optional technical scheme of the optical fiber connector, the tail frame is provided with a pulling protrusion in the radial direction.

[0017] As an optional technical scheme of the optical fiber connector, the outer periphery of the connector body is provided with a second stop protrusion, and the tail frame is provided with a pushing part which is configured to apply a force close to the mating part to the second stop protrusion when the tail frame is pushed close to the inner core.

[0018] As an optional technical scheme of the optical fiber connector, the connector body comprises a front frame, a middle frame and a compression ring, and the front frame, the middle frame and the compression ring are connected in sequence.

[0019] The inner core is arranged in the front frame; or

[0020] The tail frame is arranged in the compression ring and is gap-fitted with the compression ring. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is a structural schematic diagram of an optical fiber connector in the embodiments of the present application;

[0022] Fig. 2 is an enlarged view of A in Fig. 1;

[0023] Fig. 3 is an exploded schematic diagram of an optical fiber connector in the embodiments of the present application;

[0024] Fig. 4 is an enlarged view of B in Fig. 3;

[0025] Fig. 5 is a sectional view of an optical fiber connector in the embodiments of the present application;

[0026] Fig. 6 is a structural schematic diagram of a plurality of optical fiber connectors and a plurality of adapters in the embodiments of the present application.

[0027] In the drawings:

[0028] 10, an optical fiber connector;

[0029] 20, an adapter;

[0030] 100, a connector main body; 110, a front frame sleeve; 120, a middle frame sleeve; 121, a sliding groove; 122, a second stop protrusion; 130, a compression ring; 140, an inner core; 141, a mating portion;

[0031] 200, an outer frame sleeve; 210, an abutting portion; 220, an abutting groove; 230, a first stop protrusion;

[0032] 300, a tail frame sleeve; 310, a holding portion; 311, a pulling protrusion; 320, a connecting portion; 321, a connecting arm; 322, a hooking portion; 3221, a guide portion; 323, a reinforcing protrusion; 340, a pushing portion. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described below in conjunction with the drawings, and the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0034] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the "upper", "above" and "above" of the first feature to the second feature include the "upper" and "oblique" of the first feature to the second feature. Above or just indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the "below" and "oblique" of the first feature to the second feature, or just indicate that the horizontal height of the first feature is less than that of the second feature.

[0035] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0036] The embodiments of the application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions. The embodiments described below by referring to the drawings are exemplary and are only used to explain the application, and cannot be understood as limiting the application.

[0037] As shown in FIGS. 1-6, the present embodiment provides a fiber connector 10 connected with a mating member, wherein the mating member includes an adapter 20. The fiber connector 10 includes a connector body 100 and an outer frame sleeve 200. The front end of the connector body 100 can be locked with the adapter 20, and the front end of the connector body 100 is provided with an inner core 140 which is connected with the adapter 20, and the front end of the inner core 140 is provided with a connecting part 141. When the connector body 100 is inserted into the adapter 20, the inner core 140 remains fixed relative to the adapter 20, facilitating communication connection with other components. The outer frame sleeve 200 is slidably sleeved on the connector body 100, and pulling the outer frame sleeve 200 backward can unlock the fiber connector 10 and the adapter 20, so that the fiber connector 10 and the adapter 20 can be separated.

[0038] In some embodiments, the fiber connector 10 further comprises a tail frame sleeve 300, the tail frame sleeve 300 comprises a holding portion 310 and a connecting portion 320 connected with the outer frame sleeve 200, the connecting portion 320 extends forward from the holding portion 310, the holding portion 310 is slidably sleeved on the connector body 100; the connecting portion 320 is configured to apply a force to the outer frame sleeve 200 in a direction away from the adapter 20 when the tail frame sleeve 300 is pulled in a direction away from the inner core 140.

[0039] With such an arrangement, when the tail frame sleeve 300 is pulled backward, the connecting portion 320 can apply a force to the outer frame sleeve 200 in a direction away from the adapter 20, thereby driving the outer frame sleeve 200 to move backward, and further causing the connector body 100 and the adapter 20 to be unlocked. When a plurality of fiber connectors 10 are arranged side by side and all connected with the adapter 20, the outer frame sleeves 200 can be directly pulled backward to move backward, thereby improving the convenience of operation. Since the pull rod structure is omitted, i.e., there is no gap between the pull rod and the connector, the problem of cable jamming is avoided, the arrangement of the cable is facilitated, and the probability of the cable being broken at the connector body 100 is reduced.

[0040] In order to smoothly pull the tail frame sleeve 300 backward, the tail frame sleeve 300 is radially provided with a pulling protrusion 311. When manually pulling the tail frame sleeve 300 backward, the pulling protrusion 311 provides a point of application of force, thereby enabling the tail frame sleeve 300 to smoothly move backward relative to the connector body 100. The pulling protrusion 311 is provided at the rear end of the holding portion 310.

[0041] The outer periphery of the connector body 100 is provided with a sliding groove 121; the connecting portion 320 is slidably arranged in the sliding groove 121. Such an arrangement helps to standardize the sliding route of the connecting portion 320, and avoid the tail frame sleeve 300 from rotating about the axis; on the other hand, it helps to achieve accurate alignment between the tail frame sleeve 300 and the connector body 100 during installation.

[0042] For example, the connecting portion 320 is provided with at least four connecting portions 320, and the plurality of connecting portions 320 are arranged about the axis of the connector body 100. The cross-sectional outer contour of the tail frame sleeve 300 at the connecting portion 320 is rectangular, and the four connecting portions 320 are respectively arranged at the four corners of the rectangle, so that the outer frame sleeve 200 is uniformly stressed, and helps to smoothly move backward.

[0043] In order to enable the connecting portion 320 to apply a force to the outer frame sleeve 200, in some embodiments, the connecting portion 320 comprises a connecting arm 321 extending forward from the holding portion 310 and a hooking portion 322 at the front end of the connecting arm 321, and the outer frame sleeve 200 is provided with an abutting portion 210, the abutting portion 210 abuts against the hooking portion 322 and is located at the rear side of the hooking portion 322.

[0044] To facilitate assembly, in some embodiments, the connecting arm 321 is a resilient arm, the hooking portion 322 is outwardly protruded on the connecting arm 321 along a direction perpendicular to the extending direction of the connecting arm 321, the outer frame sleeve 200 is provided with an abutting groove 220, a rear side wall of the abutting groove 220 forms the at least partially abutting portion 210, and the hooking portion 322 is located in the abutting groove 220. In this embodiment, the hooking portion 322 is integrally formed with the connecting arm 321. During assembly, the resilient arm is bent and rebounds so that the hooking portion 322 can enter the abutting groove 220 from outside the abutting groove 220, and the reliability of the abutting of the hooking portion 322 and the abutting portion 210 can be ensured.

[0045] In embodiments in which the connecting arm 321 is a non-resilient arm, the hooking portion 322 is detachably connected with the connecting arm 321, so that the hooking portion 322 can smoothly enter the abutting groove 220.

[0046] Under the premise that the thickness of the outer frame sleeve 200 is constant, to increase the area of the abutting portion 210, in some embodiments, the outer frame sleeve 200 is radially provided with a first stop protrusion 230, and a part of the front wall of the first stop protrusion 230 and the rear side wall of the abutting groove 220 form the abutting portion 210. The provision of the first stop protrusion 230, on the one hand, increases the area of the abutting portion 210, improves the tensile strength of the outer frame sleeve 200, and reduces the probability of damage to the rear side wall of the abutting groove 220 during backward dragging; on the other hand, it can also provide a force point for the fingers when the fingers drag the outer frame sleeve 200 backward.

[0047] To facilitate the entry of the hooking portion 322 into the abutting groove 220, in some embodiments, the hooking portion 322 is provided with a guide portion 3221 for guiding the entry of the hooking portion 322 into the abutting groove 220, the guide portion 3221 is a slope, and extends forward and is inclined to the axis of the outer frame sleeve 200.

[0048] In combination with FIG. 2, in some embodiments, the connecting arm 321 is provided with a reinforcing protrusion 323 at one end close to the holding portion 310, the reinforcing protrusion 323 is provided in the sliding groove 121, and the cross-sectional profile of the connecting arm 321 at the reinforcing protrusion 323 is consistent with the profile of the sliding groove 121. The reinforcing protrusion 323, on the one hand, improves the strength of the connecting arm 321 at the end portion, and on the other hand, can avoid the shaking of the connecting arm 321 in the sliding groove 121, and improves the reliability of the connection of the hooking portion 322 and the abutting portion 210.

[0049] In other embodiments, the connection between the connecting portion 320 and the outer frame sleeve 200 can also be achieved by bonding or welding, as long as the connecting portion 320 can drive the outer frame sleeve 200 to move backward when the tail frame sleeve 300 is pulled backward.

[0050] To improve the convenience of installing the optical fiber connector 10 into the adapter 20, in some embodiments, the outer periphery of the connector body 100 is provided with a second stop protrusion 122; the outer frame sleeve 300 is provided with a pushing part 340, which is configured to apply a force to the second stop protrusion 122 in the direction of the adapter 20 when the outer frame sleeve 300 is pushed in the direction of the inner core 140, so as to drive the connector body 100 to move in the direction of the adapter 20, so that the connector body 100 is inserted into the adapter 20 and locked.

[0051] In some embodiments, the sliding groove 121 penetrates through the second stop protrusion 122 and forms a through-hole structure. During installation, the connecting part 320 passes through the sliding groove 121 to send the hooking part 322 at the front end of the connecting part 320 into the abutting groove 220.

[0052] In combination with FIG. 5, the connector body 100 includes a front frame sleeve 110, a middle frame sleeve 120, and a crimp ring 130, which are connected in sequence; and the inner core 140 is arranged in the front frame sleeve 110. The outer frame sleeve 300 is arranged on the crimp ring 130 and is in clearance fit with the crimp ring 130, so that the outer frame sleeve 300 and the crimp ring 130 can slide relative to each other. The front frame sleeve 110 and the middle frame sleeve 120 are clamped; the middle frame sleeve 120 is screwed with the crimp ring 130, and the front frame sleeve 110, the middle frame sleeve 120, and the crimp ring 130 are fixed in the front-rear direction. In this embodiment, the second stop protrusion 122 is arranged on the outer periphery of the middle frame sleeve 120.

[0053] During installation, the middle frame sleeve 120 and the crimp ring 130 are first connected, then the outer frame sleeve 200 is sleeved on the connecting part 320, and the hooking part 322 is arranged in the abutting groove 220, and then the front frame sleeve 110 with the inner core 140 installed is connected with the middle frame sleeve 120.

[0054] In this embodiment, taking the arrangement direction of the front frame sleeve 110, the middle frame sleeve 120, and the crimp ring 130 as the reference, the direction from the front frame sleeve 110 to the crimp ring 130 is the rear direction, and vice versa.

Claims

1. A fiber connector, comprising: a connector body (100), a front end of the connector body (100) being provided with an inner core (140) configured to connect with a mating piece; an outer sleeve (200) slidably sleeved on the connector body (100) ; a tail sleeve (300) including a holding part (310) and a connecting part (320) connected with the outer sleeve (200), the connecting part (320) extending forward from the holding part (310), the holding part (310) being slidably sleeved on a tail end of the connector body (100), and the connecting part (320) being configured to apply a force away from the mating piece to the outer sleeve (200) when the tail sleeve (300) is pulled away from the inner core (140).

2. The fiber optic connector of claim 1, wherein, The connecting part (320) includes a connecting arm (321) extending forward from the holding part (310) and a hooking part (322) located at a front end of the connecting arm (321), and the outer sleeve (200) is provided with an abutting part (210) abutting with the hooking part (322) and located at a rear side of the hooking part (322).

3. The fiber optic connector of claim 2, wherein, The connecting arm (321) is a resilient arm, the hooking part (322) is perpendicular to an extension direction of the connecting arm (321), the outer sleeve (200) is provided with an abutting groove (220), a rear side wall of the abutting groove (220) forms at least a part of the abutting part (210), and the hooking part (322) is located in the abutting groove (220).

4. The fiber optic connector of claim 3, wherein, The outer sleeve (200) is provided with a first stop protrusion (230) in a radial direction, and a rear side wall of the abutting groove (220) and a part of a front wall of the first stop protrusion (230) form the abutting part (210).

5. The fiber optic connector of claim 3, wherein, The hooking part (322) is provided with a guide part (3221) guiding the hooking part (322) to enter the abutting groove (220), the guide part (3221) extends forward and is inclined to an axis of the outer sleeve (200).

6. The fiber optic connector of claim 2, wherein, The connector body (100) is provided with a sliding groove (121) in a periphery thereof, one end of the connecting arm (321) close to the holding part (310) is provided with a reinforcing protrusion (323), and the reinforcing protrusion (323) penetrates the sliding groove (121).

7. The fiber optic connector of claim 1, wherein, The connector body (100) is provided with a sliding groove (121) in a periphery thereof, and the connecting part (320) penetrates the sliding groove (121) slidably.

8. The fiber optic connector of claims 1 or 7, wherein, The connecting part (320) is provided with at least four connecting parts (320), and the at least four connecting parts (320) are arranged around an axis of the connector body (100).

9. The fiber optic connector of claim 1, wherein, The tail sleeve (300) is provided with a pulling protrusion (311) in a radial direction.

10. The fiber optic connector of any one of claims 1-9, wherein, The connector body (100) is provided with a second stop protrusion (122) in a periphery thereof, and the tail sleeve (300) is provided with a pushing part (340) configured to apply a force close to the mating piece to the second stop protrusion (122) when the tail sleeve (300) is pushed close to the inner core (140).

11. The fiber optic connector of any one of claims 1-9, wherein, The connector body (100) comprises a front frame sleeve (110), a middle frame sleeve (120) and a crimp ring (130), which are connected in sequence; wherein, The inner core (140) is arranged in the front frame sleeve (110); or The tail frame sleeve (300) is arranged in the crimp ring (130) and gap-fitted with the crimp ring (130).

Images