Cabin-penetrating optical fiber connector

Abstract

The optical fiber connector comprises an optical fiber and a hollow protective sleeve, the optical fiber is arranged in the protective sleeve in a penetrating mode, the inner diameter of the protective sleeve is larger than the outer diameter of the optical fiber, the optical fiber connector further comprises a flange, and the flange is provided with a glue pouring hole which is formed in the axial direction of the flange in a penetrating mode. The optical fiber penetrates through the glue pouring hole, and at least part of the optical fiber in the glue pouring hole is a fiber core which is exposed after the protective sleeve and the tight wrapping layer and the coating layer of the optical fiber are stripped; the fiber core is bonded in the glue filling hole of the flange through first glue; and the first glue flows into a gap between the protective sleeve and the optical fiber through the cut-off end surface of the protective sleeve so as to fix the protective sleeve and the optical fiber in the protective sleeve. The optical fiber connector provided by the invention is good in stability and stable in signal transmission after optical fibers are installed.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to an optical fiber connector for penetrating a cabin. Background Art

[0002] In modern communications technology, optical fiber has become a core medium for data transmission due to its high bandwidth, low loss, and strong anti-interference capabilities. To protect the fiber and ensure its stable installation in the connector, it is often secured with a sleeve. This installation method is widely used in communications equipment connections.

[0003] However, in the prior art, due to the gap between the optical fiber and the sleeve, during actual use, especially when affected by external vibrations, temperature changes, or mechanical stress generated by long-term use, the optical fiber is prone to move relative to the sleeve, thereby causing the signal transmitted by the optical fiber to be unstable. In severe cases, the signal may even be interrupted, affecting the communication quality and the normal operation of the equipment. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a fiber optic connector for penetrating a cabin, in which the optical fiber has good stability after installation and stable transmission signals.

[0005] The present invention is achieved through the following technical solutions:

[0006] A fiber optic connector for penetrating a cabin, comprising an optical fiber and a hollow protective sleeve, wherein the optical fiber is inserted into the protective sleeve, and the inner diameter of the protective sleeve is larger than the outer diameter of the optical fiber, and further comprising:

[0007] A flange, wherein the flange is provided with a glue filling hole extending through the flange in an axial direction, the optical fiber passes through the glue filling hole, and at least a portion of the optical fiber located in the glue filling hole is a bare fiber core exposed after the protective sleeve and the tight cladding and coating layers of the optical fiber are stripped off;

[0008] The fiber core is bonded to the glue hole of the flange by a first glue;

[0009] The first glue flows through the cut end surface of the protective sleeve into the gap between the protective sleeve and the optical fiber, thereby fixing the protective sleeve and the optical fiber located in the protective sleeve.

[0010] Furthermore, the glue filling hole includes a first fixing hole located in the middle of the glue filling hole, and the fiber core is bonded in the first fixing hole by a first glue.

[0011] Furthermore, the glue filling hole further includes a pair of second fixing holes respectively located at both ends of the first fixing hole;

[0012] The second fixing hole is coaxial with the first fixing hole and is interpenetrating with each other;

[0013] The inner diameter of the second fixing hole is larger than the inner diameter of the first fixing hole;

[0014] The protective sleeve is at least partially received in the second fixing hole and is bonded to the second fixing hole via the first glue.

[0015] Furthermore, the truncated end surface of the protective sleeve abuts against the bottom wall forming the second fixing hole.

[0016] Furthermore, the first glue is epoxy glue.

[0017] Furthermore, the flange includes a fiber splitting portion located in the middle of the flange, and a plurality of the glue injection holes are provided, and the plurality of glue injection holes are all opened on the fiber splitting portion;

[0018] The plurality of fiber cores pass through and are bonded to the plurality of glue-filling holes in a one-to-one correspondence.

[0019] Furthermore, the flange is further provided with a glue pouring groove, the glue pouring groove comprising a first glue pouring groove and a second glue pouring groove respectively located on both sides of the glue pouring hole, and the first glue pouring groove and the second glue pouring groove are mutually connected with the glue pouring hole;

[0020] The portions of the protective sleeve located in the first glue pouring groove and the second glue pouring groove are respectively fixed in the first glue pouring groove and the second glue pouring groove via second glue.

[0021] Furthermore, the inner peripheral wall of the glue pouring groove is concave to form at least one glue retaining groove, and the glue retaining groove is filled with the second glue.

[0022] Furthermore, a plurality of the glue retaining grooves are provided, and the plurality of the glue retaining grooves are circumferentially distributed on the inner peripheral wall forming the glue pouring groove.

[0023] Furthermore, the second glue is polyurethane glue.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] 1. By stripping off the protective sleeve and the tight cladding and coating layer of the optical fiber in the glue-filling hole, the fiber core is directly glued to the flange of the connector with glue. The glue can also enter the gap between the optical fiber and the protective sleeve. After installation, the optical fiber has good stability, is not easy to shake, and transmits stable signals.

[0026] 2. By using part of the flange structure for fiber splitting, there is no need to set up a separate fiber splitting plate, which has a simple structure and good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the cross section of the fiber core and the protective sleeve;

[0028] Figure 2 It is a partial structural diagram of the optical fiber connector;

[0029] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0030] Figure 4 for Figure 3 Schematic diagram after filling with the first glue.

[0031] 100, optical fiber; 110, fiber core; 120, tight cladding; 130, coating; 200, protective sleeve; 210, truncated end face; 300, flange; 301, fiber splitting part; 310, glue pouring hole; 311, first fixing hole; 312, second fixing hole; 313, bottom wall; 320, first glue pouring groove; 330, second glue pouring groove; 340, glue buckle groove; 350, first sealing ring; 360, second sealing ring. DETAILED DESCRIPTION

[0032] The following is a further non-restrictive detailed description of the technical solution of the invention in conjunction with the preferred embodiments and the accompanying drawings. 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] like Figure 1 As shown, an optical fiber connector for penetration into a cabin according to one embodiment of the present invention includes an optical fiber 100 and a hollow protective sleeve 200. The optical fiber 100 is inserted into the protective sleeve 200, and the inner diameter of the protective sleeve 200 is larger than the outer diameter of the optical fiber 100. The optical fiber 100 includes a core 110 and a coating layer 130 and a tight cladding layer 120 wrapped around the outer periphery of the core 110.

[0034] like Figure 2-Figure 4 As shown, the optical fiber connector further includes a flange 300, which defines a glue injection hole 310 extending axially therethrough. The optical fiber 100 passes through the glue injection hole 310. At least the portion of the optical fiber 100 located within the glue injection hole 310 is the exposed core 110 after the protective sleeve 200, the tight cladding 120, and the coating 130 of the optical fiber 100 have been stripped away. The core 110 is bonded to the glue injection hole 310 of the flange 300 using a first glue. Furthermore, the first glue flows through the truncated end face 210 of the protective sleeve 200 into the gap between the protective sleeve 200 and the optical fiber 100, thereby securing the protective sleeve 200 and the optical fiber 100 within the protective sleeve 200. During glue pouring, the first glue is injected simultaneously from both ends of the glue pouring hole 310. The first glue gradually penetrates and fills the gap between the fiber core 110 and the glue pouring hole 310, thereby forming a high-strength fixed connection between the fiber core 110 and the flange 300. In addition, the first glue can also penetrate into the interior of the protective sleeve 200 through the truncated end face 210 of the protective sleeve 200, filling the annular gap between the optical fiber 100 and the sleeve 200. By stripping the protective sleeve 200 and the tight cladding 120 and coating 130 of the optical fiber 100 from the portion of the optical fiber located within the glue pouring hole 310, the fiber core 110 is directly adhered to the flange 300 of the connector using glue. The glue can also penetrate into the gap between the optical fiber 100 and the protective sleeve 200. After installation, the optical fiber 100 has good stability, is not prone to shaking, and transmits stable signals.

[0035] In this embodiment, reference Figure 2 The glue filling hole 310 includes a first fixing hole 311 located in the middle of the glue filling hole 310 and a pair of second fixing holes 312 located at both ends of the first fixing hole 311. The fiber core 110 is bonded to the first fixing hole 311 by the first glue. The second fixing hole 312 is coaxial with the first fixing hole 311 and is interpenetrating with it. The inner diameter of the second fixing hole 312 is larger than the inner diameter of the first fixing hole 311. The protective sleeve 200 is at least partially received in the second fixing hole 312 and bonded to the second fixing hole 312 by the first glue. Figure 3The red block part is the position filled with the first glue. When pouring glue, the first glue is injected from the end of the second fixing hole 312 away from the first fixing hole 311. The first glue flows through the gap between the protective sleeve 200 and the second fixing hole 312 to the first fixing hole 311. The first glue gradually penetrates and fills the gap between the fiber core 110 and the first fixing hole 311, so that a high-strength fixed connection is formed between the fiber core 110 and the flange 300. Then, when the first fixing hole 311 is filled, the first glue overflows and continues to flow to penetrate into the protective sleeve 200 to fill the annular gap between the optical fiber 100 and the protective sleeve 200 or continue to fill the gap between the protective sleeve 200 and the second fixing hole 312, further improving the stability between the protective sleeve 200 and the flange 300 and the protective sleeve 200 and the optical fiber 100.

[0036] Furthermore, the truncated end surface 210 of the protection sleeve 200 abuts against the bottom wall 313 forming the second fixing hole 312 , ensuring that one end of the protection sleeve 200 is fixedly installed in place.

[0037] In this embodiment, the first glue is epoxy glue, and the epoxy glue is 353DN.

[0038] refer to Figure 2 The flange 300 includes a fiber splitting portion 301 located in the middle of the flange 300 . Multiple glue holes 310 are provided, and each of the glue holes 310 is opened on the fiber splitting portion 301. The multiple fiber cores 110 pass through and are bonded into the glue holes 310 in a one-to-one correspondence. Compared to the prior art that separately provides a fiber splitting tray for fiber splitting and then fixes the fiber splitting tray to the flange, which has poor stability, this embodiment utilizes part of the structure of the flange 300 for fiber splitting, eliminating the need for an additional fiber splitting tray, resulting in a simpler structure and better stability.

[0039] refer to Figure 2 The flange 300 also defines a glue pouring groove, which includes a first glue pouring groove 320 and a second glue pouring groove 330, respectively located on either side of the glue pouring hole 310. The first glue pouring groove 320 and the second glue pouring groove 330 are interlinked with the glue pouring hole 310. The portions of the protective sleeve 200 located in the first glue pouring groove 320 and the second glue pouring groove 330 are fixed to the first glue pouring groove 320 and the second glue pouring groove 330, respectively, via a second glue. In this embodiment, both ends of the multiple glue pouring holes 310 are connected to the first glue pouring groove 320 and the second glue pouring groove 330, respectively.

[0040] Furthermore, the inner circumferential wall forming the glue filling groove is concavely formed with at least one glue groove 340. This groove 340 is filled with the second glue and serves to limit the cured second glue, further enhancing the tensile strength of the optical fiber ends. Preferably, multiple glue grooves 340 are provided, and the multiple glue grooves 340 are circumferentially distributed along the inner circumferential wall forming the glue filling groove. Furthermore, the shape of the glue grooves 340 can be rectangular, trapezoidal, cylindrical, or other irregular shapes.

[0041] In this embodiment, the second glue is polyurethane glue.

[0042] In this embodiment, flange 300 is fixedly connected to the external sealed cabin by screws. The flange 300 and the external sealed cabin are sealed together by a first sealing ring 350 and a second sealing ring 360. The first sealing ring 350 is provided with at least one seal for the axial end face of flange 300, and the second sealing ring 360 is provided with at least one seal for the radial outer circumference of flange 300. The provision of the first sealing ring 350 and the second sealing ring 360 ensures dual sealing between the flange 300 and the external sealed cabin in both the axial and radial directions, ensuring tightness between the interior and exterior of the cabin.

[0043] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A fiber optic connector for penetrating a cabin, comprising an optical fiber (100) and a hollow protective sleeve (200), wherein the optical fiber (100) is inserted into the protective sleeve (200), and the inner diameter of the protective sleeve (200) is larger than the outer diameter of the optical fiber (100), characterized in that: Also includes: A flange (300), wherein the flange (300) is provided with a glue injection hole (310) extending through the flange (300) in an axial direction thereof, the optical fiber (100) passing through the glue injection hole (310), and at least a portion of the optical fiber (100) located in the glue injection hole (310) is a bare fiber core (110) after the protective sleeve (200) and the tight cladding (120) and the coating (130) of the optical fiber (100) are stripped off; The fiber core (110) is bonded to the glue hole (310) of the flange (300) by a first glue; The first glue flows through the truncated end surface (210) of the protective sleeve (200) into the gap between the protective sleeve (200) and the optical fiber (100), thereby fixing the protective sleeve (200) and the optical fiber (100) located in the protective sleeve (200).

2. The optical fiber connector for penetration into a cabin according to claim 1, characterized in that: The glue injection hole (310) comprises a first fixing hole (311) located in the middle of the glue injection hole (310), and the fiber core (110) is bonded in the first fixing hole (311) by first glue.

3. The optical fiber connector for penetration of a cabin according to claim 2, characterized in that: The glue injection hole (310) further includes a pair of second fixing holes (312) respectively located at two ends of the first fixing hole (311); The second fixing hole (312) and the first fixing hole (311) are coaxial and interpenetrating with each other; The inner diameter of the second fixing hole (312) is greater than the inner diameter of the first fixing hole (311); The protective sleeve (200) is at least partially received in the second fixing hole (312) and is bonded to the second fixing hole (312) via the first glue.

4. The optical fiber connector for penetration into a cabin according to claim 3, characterized in that: The truncated end surface (210) of the protective sleeve (200) abuts against the bottom wall (313) forming the second fixing hole (312).

5. The optical fiber connector for penetration into a cabin according to any one of claims 1 to 3, characterized in that: The first glue is epoxy glue.

6. The optical fiber connector for penetration of a cabin according to claim 1, characterized in that: The flange (300) includes a fiber splitting portion (301) located in the middle of the flange (300), and a plurality of glue injection holes (310) are provided, and the plurality of glue injection holes (310) are all opened on the fiber splitting portion (301); The plurality of fiber cores (110) pass through and are bonded to the plurality of glue injection holes (310) in a one-to-one correspondence.

7. The optical fiber connector for penetration of a cabin according to claim 1, characterized in that: The flange (300) is further provided with a glue pouring groove, the glue pouring groove comprising a first glue pouring groove (320) and a second glue pouring groove (330) respectively located on both sides of the glue pouring hole (310), and the first glue pouring groove (320) and the second glue pouring groove (330) are mutually connected with the glue pouring hole (310); The portions of the protective sleeve (200) located in the first glue pouring groove (320) and the second glue pouring groove (330) are respectively fixed in the first glue pouring groove (320) and the second glue pouring groove (330) via second glue.

8. The optical fiber connector for penetration into a cabin according to claim 7, characterized in that: The inner peripheral wall forming the glue pouring groove is concave to form at least one glue retaining groove (340), and the glue retaining groove (340) is filled with the second glue.

9. The optical fiber connector for penetration into a cabin according to claim 8, characterized in that: A plurality of the glue retaining grooves (340) are provided, and the plurality of the glue retaining grooves (340) are circumferentially distributed on the inner peripheral wall forming the glue pouring groove.

10. The optical fiber connector for penetrating a cabin according to any one of claims 7 to 9, characterized in that: The second glue is polyurethane glue.

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