Cabin-penetrating airtight optical fiber splitter

Abstract

The utility model relates to the technical field of connectors, in particular to a cabin-penetrating airtight optical fiber splitter, which comprises a female head thread sleeve, a first end of the female head thread sleeve is provided with a threaded connection section, a second end of the female head thread sleeve is provided with a cable penetrating-out section, and the outer wall of the female head thread sleeve is provided with a shielding ring; the first end of the male head thread sleeve is detachably connected to the threaded connection section of the female head thread sleeve, and the second end of the male head thread sleeve is used for penetration of a cable; and the sealing structure is connected to one side of the shielding ring. The optical fiber splitter is simple in structure, the female head thread sleeve can be fixed to the cabin wall, the male head thread sleeve and the female head thread sleeve are detachably connected, and a space for a cable to penetrate and split is formed between the male head thread sleeve and the female head thread sleeve, so that a new separation surface is not newly added while the optical fiber completes cabin penetrating and beam splitting, and the optical fiber splitting efficiency is improved. The optical fiber after beam splitting can be directly connected to equipment through the cable outlet hole, so that the environmental requirements of compact space, violent vibration and strong impact can be met, and the link loss and the weight of the whole assembly are also reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of connector, specifically to the cabin penetrating airtight optical fiber brancher. BACKGROUND

[0002] In the field of optical fiber transmission communication, with the increase of the use of equipment such as cases and racks, when the optical cable needs to be connected from the outside of the case to the inside of the case, a specially designed cabin penetrating adapter connector is required, and even a certain airtight requirement is required. This cabin penetrating connector is installed on the bulkhead, and the optical signal transmission between the two ends of the separation surface is realized by the butt joint of the two end adapters, realizing the transmission of massive data between the cabins.

[0003] Because of the separation surface caused by the connector connection mode, the overall loss increases greatly after butt joint, and in extreme environmental conditions such as severe vibration and strong impact, the existence of the separation surface may challenge the connection stability of the connector contact and cause problems such as light instantaneous interruption, affecting the normal transmission of the link. In addition, the total weight of the optical cable assembly of the cabin penetrating connector and the adapter connector is large, and after the two end adapters are connected, the distance between the sealing line body or the tail out line port and the separation surface is far, which may even interfere with the wiring of other equipment, and there is limitation. SUMMARY

[0004] In view of the technical problems of the existing optical fiber brancher, the utility model provides a cabin penetrating airtight optical fiber brancher, which comprises:

[0005] The female screw sleeve is provided with a shielding ring on the outer wall.

[0006] The male screw sleeve is detachably connected to the threaded connection section of the female screw sleeve at the first end, and the second end is used for cable penetration.

[0007] The sealing structure is connected to one side of the shielding ring.

[0008] The nut is threadedly connected to the outer wall of the female screw sleeve, and the mounting groove is formed between the nut and the shielding ring.

[0009] Among them, the male screw sleeve is provided with a cable penetration hole, the cable penetration section of the female screw sleeve is provided with a plurality of cable penetration holes, a glue filling cavity is formed between the cable penetration hole and the cable penetration hole, and the glue filling cavity is used for filling sealant, so that the cable in the glue filling cavity is fixed.

[0010] Preferably, the glue filling cavity is located in the female screw sleeve, the cable penetration hole comprises a first penetration hole and a second penetration hole, and the first penetration hole, the second penetration hole and the glue filling cavity are communicated with each other.

[0011] Preferably, the cable passes through the first entry hole, the second entry hole, the glue filling cavity and the cable exit hole in sequence along the threading direction of the cable.

[0012] Preferably, the inner diameter of the first entry hole is smaller than the inner diameter of the second entry hole, the inner diameter of the second entry hole is smaller than the inner diameter of the glue filling cavity, and the inner diameter of the cable exit hole is smaller than the inner diameter of the first entry hole.

[0013] Preferably, the male threaded sleeve is provided with an external threaded connection structure at one end of the female threaded sleeve, the threaded connection section is an internal threaded connection structure, and the external threaded connection structure is connected to the inner side of the internal threaded connection structure.

[0014] Preferably, the outer wall of the female threaded sleeve is provided with external threads, and the nut is threadedly connected to the outer wall of the female threaded sleeve from the second end of the female threaded sleeve.

[0015] Preferably, the shielding ring is provided with a groove at one side of the nut, and the sealing structure comprises a sealing ring which is clamped into the groove.

[0016] Preferably, the entrance of the first entry hole is provided with a rounded corner.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The optical fiber brancher provided in the application has a simple structure, the female threaded sleeve can be fixed to the bulkhead, the male threaded sleeve and the female threaded sleeve can be detachably connected, a space for cable entry and branching is formed between the male threaded sleeve and the female threaded sleeve, the optical fiber can complete the cable entry and branching without adding a new separation surface, and the branched optical fiber can be directly connected to equipment from the cable exit hole, so that the environment requirements of compact space, severe vibration and strong impact can be met, and the link loss and the overall component weight are reduced.

[0019] The number of the female threaded sleeve exit holes and the outer diameter of the male threaded sleeve entry holes can be replaced as needed through threaded cooperation, so that the diversification requirements of optical fiber signal distribution in the cabin entry scene are met. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures can be represented by a like numeral. For purposes of clarity, not every component can be called out in every drawing. There is now being described by way of example various embodiments of aspects of the present utility model, with reference to the accompanying drawings in which:

[0021] Figure 1 is a schematic view of the cabin entry airtight optical fiber brancher shown in the utility model mounted to the bulkhead;

[0022] Figure 2It is the structure schematic view of the cabin-penetrating airtight optical fiber brancher shown in the utility model;

[0023] Figure 3 It is Figure 2 The schematic view of A-A section in the middle;

[0024] Figure 4 It is the explosion view of the cabin-penetrating airtight optical fiber brancher shown in the utility model;

[0025] Figure 5 It is Figure 4 The schematic view of B-B section in the middle. DETAILED DESCRIPTION

[0026] In order to understand the technical content of the utility model more, specific embodiments are raised and the following is described with the attached drawings.

[0027] As shown in the combination Figure 1 The utility model discloses a kind of cabin-penetrating airtight optical fiber branchers 100, it can be fixed to cabin wall 200, so that optical fiber can pass through cabin wall 200, while realizing the function of beam splitting, from one bundle into multiple bundles, and without adding the separation surface of optical fiber.

[0028] As shown in the combination Figures 2 to 5 Cabin-penetrating airtight optical fiber brancher 100 includes female head screw sleeve 10, male head screw sleeve 20, sealing structure 30 and nut 40.

[0029] Wherein female head screw sleeve 10 and male head screw sleeve 20 can be connected or separated by thread structure, when female head screw sleeve 10 and male head screw sleeve 20 are separated, the sheath of optical fiber bundle needing to be penetrated into cabin can be peeled off first, the aramid fiber covering the outside of multiple optical fiber cores is exposed, after coating sealing glue on the outside of aramid fiber, female head screw sleeve 10 and male head screw sleeve 20 are connected together, by coating sealing glue on the outside of aramid fiber, the cable filled between female head screw sleeve 10 and male head screw sleeve 20 realizes the function of fixation and sealing.

[0030] As shown in the combination Figure 3 The outer wall of female head screw sleeve 10 is provided with shielding ring 13, sealing structure 30 is connected to one side of shielding ring 13, nut 40 is threadedly connected to the outer wall of female head screw sleeve 10, installation groove is formed between nut 40 and shielding ring 13, by adjusting the position of nut 40 on the surface of female head screw sleeve 10, the width of installation groove can be adjusted, to adapt to cabin wall 200 of different thickness.

[0031] Specifically, the outer wall of female head screw sleeve 10 is provided with external thread, nut 40 is threadedly connected to the outer wall of female head screw sleeve 10 from the second end of female head screw sleeve 10.

[0032] The surface of the bulkhead 200 is provided with an opening, the female threaded sleeve 10 is installed into the opening, and the nut 40 is installed from the inside of the bulkhead 200 to fix the female threaded sleeve 10 to the bulkhead 200.

[0033] In an optional embodiment, the shielding ring 13 has a groove on the side facing the nut 40, and the sealing structure 30 includes a sealing ring that is engaged in the groove.

[0034] Thus, the outer side of the bulkhead 200 is sealed by a sealing ring, and the inner side is tightened by a nut 40, so that the female threaded sleeve 10 is fixed to the surface of the bulkhead 200.

[0035] like Figure 3 As shown, the first end of the female threaded sleeve 10 is provided with a threaded connection section 11, and the second end of the female threaded sleeve 10 is provided with a cable exit section 12, which has multiple cable exit holes 121. The first end of the male threaded sleeve 20 is detachably connected to the threaded connection section 11 of the female threaded sleeve 10, and the second end of the male threaded sleeve 20 is used for cable insertion.

[0036] The number of cable exit holes 121 varies from 2 to 6, depending on the number of optical fiber cores inside the cable.

[0037] Specifically, the male threaded sleeve 20 has a cable insertion hole, and a potting cavity is formed between the cable insertion hole and the cable exit hole 121. The potting cavity is filled with sealant to fix the cable inside the potting cavity.

[0038] In this way, the cables are directly connected through potting, avoiding optical path conversion, reducing the number of two docking connectors, effectively reducing weight and link loss, and improving transmission stability.

[0039] In a specific embodiment, the cable sheath is removed, the male threaded sleeve 20 is fitted onto the outer wall of the cable, a sealant such as DG-3 adhesive is applied to the exposed aramid yarn surface, the optical fiber core is inserted into the corresponding cable exit hole 121 and extended to the inside of the bulkhead 200, and then the male threaded sleeve 20 is connected to the female threaded sleeve 10.

[0040] The above method can achieve fiber optic cable splitting through the compartment without adding new splitting surfaces. It also has a compact structure. The fiber optic cable exits through the cable exit hole 121. The distance between the exit point and the compartment wall 200 is short, allowing for more space to connect other equipment. It avoids the fiber optic cable bending radius being too small. The fiber optic cable is branched simultaneously during the insertion process, which facilitates signal distribution at the insertion point. It greatly reduces space occupation and wiring interference, and is especially suitable for environments with compact space, severe vibration, and strong impact.

[0041] Combination Figure 3As shown, the glue pouring cavity is located in the female threaded sleeve 10, the cable penetrating hole includes a first penetrating hole 21 and a second penetrating hole 22, and the first penetrating hole 21, the second penetrating hole 22 and the glue pouring cavity are in communication with each other.

[0042] In the cable penetrating direction, the cable sequentially passes through the first penetrating hole 21, the second penetrating hole 22, the glue pouring cavity and the cable penetrating hole 121.

[0043] Preferably, the inner diameter of the first penetrating hole 21 is smaller than the inner diameter of the second penetrating hole 22, the inner diameter of the second penetrating hole 22 is smaller than the inner diameter of the glue pouring cavity, and the inner diameter of the cable penetrating hole 121 is smaller than the inner diameter of the first penetrating hole 21.

[0044] It can be understood that when the cable is in the first penetrating hole 21, the outer diameter of the cable is equal to the inner diameter of the first penetrating hole 21, the model of the male threaded sleeve 20 can be matched with appropriate parameters according to the outer diameter of the cable, the cable is at the second penetrating hole 22, the sheath layer is stripped off, and this place is aramid yarn and filled glue, the cable is in the glue pouring cavity, the sheath layer is stripped off, and this place is aramid yarn and filled glue, it can be seen that the glue pouring cavity and the second penetrating hole 22 are both mixtures of glue and aramid yarn, on the basis of ensuring the sealing, the step structure formed after the glue solidifies is matched with the step cavity formed by the second penetrating hole 22 and the glue pouring cavity, and has good tensile property.

[0045] In specific embodiments, the male threaded sleeve 20 is provided with an external threaded connection structure at one end of the female threaded sleeve 10, the threaded connection section 11 is an internal threaded connection structure, and the external threaded connection structure is connected to the inner side of the internal threaded connection structure.

[0046] In this way, the male threaded sleeve 20 can be fixed to one end of the female threaded sleeve 10 through threaded connection.

[0047] Preferably, the entrance of the first penetrating hole 21 is provided with a rounded corner, so that when the cable is bent on the outside of the male threaded sleeve 20, stress concentration is not easy to occur at the first penetrating hole 21.

[0048] In combination with the above embodiments, the optical fiber branch device has simple structure, the female threaded sleeve can be fixed to the cabin wall, the male threaded sleeve and the female threaded sleeve can be detachably connected, a space for cable penetration and beam splitting is formed between the male threaded sleeve and the female threaded sleeve, the optical fiber can complete the cable penetration and beam splitting without adding new separation surfaces, and the beam-splitting optical fiber can be directly connected to the equipment from the cable penetrating hole, so that the environment requirements of compact space, severe vibration and strong impact can be met, and the link loss and the overall component weight are reduced.

[0049] Although the utility model has disclosed as above with preferable embodiments, it is not used to limit the utility model. Those skilled in the art to which the utility model belongs can make various changes and decorations without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model is accurate according to the definition of the claims.

Claims

1. A transcathode-mounted airtight fiber optic splitter, characterized in that, include: The female threaded sleeve (10) has a threaded connection section (11) at the first end and a cable exit section (12) at the second end. The outer wall of the female threaded sleeve (10) is provided with a shielding ring (13). The male threaded sleeve (20) has a first end that is detachably connected to the threaded connection section (11) of the female threaded sleeve (10), and a second end that is used for cable insertion. A sealing structure (30) is connected to one side of the shielding ring (13); Nut (40), threaded to the outer wall of the female threaded sleeve (10), forming a mounting groove between the nut (40) and the retaining ring (13); The male threaded sleeve (20) has a cable insertion hole, and the female threaded sleeve (10) has a cable exit section (12) with multiple cable exit holes (121). A potting cavity is formed between the cable insertion hole and the cable exit hole (121). The potting cavity is filled with sealant to fix the cable in the potting cavity.

2. The transcathode airtight fiber optic splitter according to claim 1, characterized in that, The glue-filling cavity is located inside the female threaded sleeve (10), and the cable insertion hole includes a first insertion hole (21) and a second insertion hole (22), which are interconnected with the glue-filling cavity.

3. The transcathode airtight fiber optic splitter according to claim 2, characterized in that, Along the cable threading direction, the cable passes through the first insertion hole (21), the second insertion hole (22), the potting cavity, and the cable exit hole (121) in sequence.

4. The transcathode airtight fiber optic splitter according to claim 2, characterized in that, The inner diameter of the first insertion hole (21) is smaller than the inner diameter of the second insertion hole (22), the inner diameter of the second insertion hole (22) is smaller than the inner diameter of the potting cavity, and the inner diameter of the cable exit hole (121) is smaller than the inner diameter of the first insertion hole (21).

5. The transcathode airtight fiber optic splitter according to claim 1, characterized in that, The male threaded sleeve (20) has an external threaded connection structure at one end facing the female threaded sleeve (10), and the threaded connection section (11) is an internal threaded connection structure. The external threaded connection structure is connected to the inner side of the internal threaded connection structure.

6. The transcathode airtight fiber optic splitter according to claim 1, characterized in that, The outer wall of the female threaded sleeve (10) is provided with external threads, and the nut (40) is threaded to the outer wall of the female threaded sleeve (10) from the second end of the female threaded sleeve (10).

7. The transcathode airtight fiber optic splitter according to claim 1, characterized in that, The shielding ring (13) has a groove on one side facing the nut (40), and the sealing structure (30) includes a sealing ring that is inserted into the groove.

8. The transcathode airtight fiber optic splitter according to claim 2, characterized in that, The entrance of the first through hole (21) is rounded.

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