FC connector

Abstract

The utility model discloses an FC connector comprising a sleeve which is a hollow pipe fitting and is provided with a first end portion and a second end portion which are opposite to each other, and the two end portions are in an opening shape; the insertion core is inserted into the sleeve from the first end part of the sleeve; the optical fiber is inserted into the sleeve from the second end part of the sleeve and is connected with the insertion core; the FC connector further comprises an adjusting nut, the adjusting nut is in threaded connection with the periphery of the sleeve, and when the adjusting nut rotates relative to the sleeve, the adjusting nut can drive the insertion core to linearly move along the extension direction of the optical fiber relative to the sleeve. Compared with the prior art, the FC connector has the advantages that the adjusting nut is additionally arranged, so that the inserting core can be driven to move linearly by operating the adjusting nut, and the working distance of a system applied by the FC connector can be adjusted, so that the stability of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optics, in particular to an FC connector. Background Art

[0002] In fiber optic systems, the most commonly used connector type is the FC (Ferrule Connector). FC connectors are removable (removable) devices that connect optical fibers. They precisely butt together the two ends of the fibers to maximize the coupling of light energy from the transmitting fiber into the receiving fiber, minimizing the impact of the fiber's presence on the optical link.

[0003] Existing FC connectors, such as those disclosed in Chinese patent applications No. 202120008771.0 and No. 202321211863.4, typically include a ferrule, a retaining nut, a sleeve, and an optical fiber connected to the ferrule. After installation, the position of the ferrule cannot be adjusted, making these FC connectors unsuitable for applications requiring focusing.

[0004] Therefore, there is room for further improvement. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an FC connector with adjustable ferrule position to expand application occasions in view of the deficiencies in the above-mentioned prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an FC connector, comprising:

[0007] The sleeve is a hollow tube having a first end and a second end opposite to each other, and both ends are open;

[0008] a ferrule, inserted into the interior of the sleeve from the first end portion of the sleeve; and

[0009] An optical fiber is inserted into the sleeve from the second end portion of the sleeve and connected to the ferrule;

[0010] Its characteristics are:

[0011] The FC connector further includes an adjusting nut, which is threadedly connected to the outer periphery of the sleeve. When the adjusting nut rotates relative to the sleeve, it can drive the ferrule to move linearly relative to the sleeve along the extension direction of the optical fiber.

[0012] Compared with the existing FC connector, by adding an adjustment nut, the ferrule can be driven to move linearly by operating the adjustment nut, thereby enabling the system used by the FC connector to adjust the working distance to improve the stability of the system.

[0013] Furthermore, in order to facilitate the adjustment of the nut to drive the insert, the adjustment nut includes a nut body threadedly connected to the sleeve, and a groove is formed in the nut body;

[0014] A tail handle and a positioning pin are also provided in the sleeve. The tail handle is provided at the end of the ferrule located in the sleeve and is arranged at intervals on the outer periphery of the optical fiber. The positioning pin is provided on the tail handle. A key slot is provided on the peripheral wall of the sleeve. The positioning pin passes through the sleeve from the key slot and enters the groove of the adjusting nut. The positioning pin can be driven by the adjusting nut to slide along the key slot, thereby allowing the ferrule to move linearly relative to the sleeve along the extension direction of the optical fiber.

[0015] In addition, the provision of the positioning pin can also limit the movement trajectory of the ferrule and prevent it from rotating relative to the sleeve.

[0016] Preferably, the adjusting nut is arranged on the outer periphery of the sleeve near the second end, the groove is formed by the side of the nut body away from the second end being recessed toward the second end, and the insert maintains a tendency to move and reset toward the second end.

[0017] In order to achieve automatic resetting of the ferrule, a first step portion is formed on the peripheral wall of the tail handle, and a second step portion is formed in the sleeve. The second step portion is arranged close to the first end portion. An elastic member is sleeved on the outer periphery of the tail handle. The elastic member abuts between the first step portion and the second step portion, thereby keeping the ferrule in a resetting trend.

[0018] In order to prevent the adjusting nut from being separated from the sleeve, the adjusting nut is arranged on the outer periphery of the sleeve near the second end portion, and a limiting ring is sleeved on the outer periphery of the second end portion of the sleeve.

[0019] In order to facilitate the connection of the FC connector as a whole with the outside, the adjusting nut is provided on the outer periphery of the sleeve near the second end, and the outer periphery of the sleeve near the first end is provided with a fixing nut.

[0020] Compared with the prior art, the advantages of the present invention are: by adding an adjusting nut, the ferrule can be driven to move linearly by operating the adjusting nut, thereby enabling the system used by the FC connector to adjust the working distance to improve the stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of an FC connector according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the exploded structure of the FC connector according to an embodiment of the present invention;

[0023] Figure 3 A cross-sectional view of an FC connector according to an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of an application state of FC according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of another application state of the FC according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0028] See also Figures 1 to 3 , an FC connector, including a sleeve 1, a core 2, a fixing nut 3, an adjusting nut 4, a limiting ring 5, a tail handle 6 and an elastic member 7.

[0029] The cannula 1 is a hollow tube having a first end 11 and a second end 12, both of which are open. The ferrule 2 is inserted into the cannula 1 through the first end 11, and the optical fiber 8 is inserted into the cannula 1 through the second end 12 and connected to the ferrule 2. The portion of the optical fiber 8 exposed outside the cannula 1 may be provided with a sheath 81, preferably a rubber sheath.

[0030] The fixing nut 3 is arranged on the outer periphery of the sleeve 1 near the first end 11, the adjusting nut 4 is arranged on the outer periphery of the sleeve 1 near the second end 12, the limiting ring 5 is sleeved on the outer periphery of the second end 12 of the sleeve 1, and the adjusting nut 4 is located between the fixing nut 3 and the limiting ring 5. The fixing nut 3 is a universal nut of the FC connector and is used to connect to the outside of the FC connector. The adjusting nut 4 is used to adjust the position of the ferrule 2 (the position along the extension direction of the optical fiber 8, such as Figure 3 X direction shown in ).

[0031] The adjusting nut 4 includes a nut body 41 threadedly connected to the sleeve 1, and a groove 42 is formed in the nut body 41. The groove 42 is formed by a side of the nut body 41 away from the second end 12 being recessed in the direction of the second end 12. The FC connector also includes a locating pin 9. The tail handle 6 is provided at the end of the ferrule 2 located in the sleeve 1 and is arranged at intervals on the outer periphery of the optical fiber 8. The locating pin 9 is provided on the tail handle 6. A keyway 13 is provided on the peripheral wall of the sleeve 1, extending in a direction parallel to the X direction. The locating pin 9 passes through the sleeve 1 at the keyway 13 and enters the groove 42 of the adjusting nut 4. The locating pin 9 is preferably perpendicular to the X direction. The locating pin 9 can slide along the keyway 13 (i.e., slide along the X direction).

[0032] A first step portion 61 is formed on the peripheral wall of the tail handle 6, and a second step portion 14 is formed in the sleeve 1. The second step portion 14 is arranged close to the first end portion 11. The above-mentioned elastic member 7 is preferably a spring, which is sleeved on the outer periphery of the tail handle 6 and abuts between the first step portion 61 and the second step portion 14.

[0033] When adjusting nut 4 is operated, it rotates relative to sleeve 1. Due to the threaded connection between the two, adjusting nut 4 also moves in the X-direction, for example, toward first end 11. This, in turn, pushes locating pin 9, pushing tail handle 6 toward first end 11. Furthermore, because tail handle 6 is connected to ferrule 2, it can push ferrule 2 out of sleeve 1, compressing elastic member 7. The smaller the pitch of adjusting nut 4, the higher the adjustment accuracy.

[0034] Thus, the FC connector of the present invention, by adding an adjustment nut 4, enables the ferrule 2 to move, thereby adjusting the position of the ferrule 2. The limit ring 5 limits the adjustment limit of the adjustment nut 4 to prevent it from separating from the sleeve 1. Furthermore, the adjustment nut 4 and the ferrule 2 can also be connected using other existing structures to enable synchronous linear movement and relative rotation, such as an elastic connection. In this embodiment, the specific matching structure of the positioning pin 9 and the keyway 14 also ensures that the ferrule 2 does not rotate during movement, thereby ensuring that the direction of the polarization-maintaining axis is substantially fixed when using polarization-maintaining fiber.

[0035] The FC connector of this utility model can be applied to the collimation system, see Figure 4 , connected to the optical fiber collimator 100 through the fixing nut 3, the optical fiber collimator 100 is disclosed in the Chinese patent application No. 202320639256.1 of the applicant. By adjusting the position of the ferrule 2, the working distance of the collimation system can be adjusted to ensure the stability of the collimation system. Or, as Figure 5As shown, it is connected to the UPC flange plug-in collimator 200 through a fixing nut 3. Similarly, by adjusting the position of the ferrule 2, the working distance of the collimation system can be adjusted.

Claims

1. An FC connector, comprising: The sleeve (1) is a hollow tube having a first end (11) and a second end (12) opposite to each other, and both ends are open; The ferrule (2) is inserted into the interior of the sleeve (1) from the first end (11) of the sleeve (1); as well as An optical fiber (8) is inserted into the sleeve (1) from the second end (12) of the sleeve (1) and connected to the ferrule (2); Its characteristics are: The FC connector further comprises an adjusting nut (4), which is threadedly connected to the outer periphery of the sleeve (1). When the adjusting nut (4) rotates relative to the sleeve (1), it can drive the ferrule (2) to move linearly relative to the sleeve (1) along the extension direction of the optical fiber (8).

2. The FC connector according to claim 1, wherein: The adjusting nut (4) comprises a nut body (41) threadedly connected to the sleeve (1), and a groove (42) is formed in the nut body (41); The sleeve (1) is further provided with a tail handle (6) and a positioning pin (9). The tail handle (6) is provided at the end of the ferrule (2) located in the sleeve (1) and is arranged at intervals on the outer periphery of the optical fiber (8). The positioning pin (9) is provided on the tail handle (6). A key groove (13) is provided on the peripheral wall of the sleeve (1). The positioning pin (9) passes through the sleeve (1) from the key groove (13) and enters the groove (42) of the adjusting nut (4). The positioning pin (9) can be driven by the adjusting nut (4) to slide along the key groove (13), thereby allowing the ferrule (2) to move linearly relative to the sleeve (1) along the extension direction of the optical fiber (8).

3. The FC connector according to claim 2, wherein: The adjusting nut (4) is arranged on the outer periphery of the sleeve (1) near the second end (12), and the groove (42) is formed by a side of the nut body (41) away from the second end (12) being recessed in the direction of the second end (12), and the insert (2) maintains a tendency to move and reset toward the second end (12).

4. The FC connector according to claim 3, wherein: A first step portion (61) is formed on the peripheral wall of the tail handle (6), a second step portion (14) is formed in the sleeve (1), the second step portion (14) is arranged close to the first end portion (11), and an elastic member (7) is sleeved on the outer periphery of the tail handle (6), the elastic member (7) abuts between the first step portion (61) and the second step portion (14), thereby maintaining the tendency of the ferrule (2) to reset.

5. The FC connector according to claim 1, wherein: The adjusting nut (4) is arranged on the outer periphery of the sleeve (1) close to the second end (12), and a limiting ring (5) is sleeved on the outer periphery of the second end (12) of the sleeve (1).

6. The FC connector according to claim 1, wherein: The adjusting nut (4) is arranged on the outer periphery of the sleeve (1) close to the second end (12), and a fixing nut (3) is arranged on the outer periphery of the sleeve (1) close to the first end (11).

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