Hot melt type optical fiber connector

Abstract

The utility model discloses a hot melt type optical fiber connector, which comprises an outer frame sleeve, an optical fiber connecting assembly and a tail sleeve, wherein the optical fiber connecting assembly comprises a connecting assembly main body and an aramid fiber locking cap, one end of the connecting assembly main body is arranged in the outer frame sleeve in a penetrating manner, and the aramid fiber locking cap is used for locking an optical fiber cable to the connecting assembly main body; the tail sleeve is provided with a head end and a tail end, and the head end is arranged outside the aramid fiber locking cap in a sleeving mode and detachably connected with the outer frame sleeve. Wherein the tail end of the hot melt type optical fiber connector is provided with the tail sleeve, and the head end of the tail sleeve is sleeved outside the aramid fiber locking cap and is detachably connected with the outer frame sleeve, so that the tail sleeve can be connected with the outer frame sleeve after the optical fiber is fixed in the connector in a hot melt manner and is locked by the aramid fiber locking cap in the process of terminating the optical fiber on site; the optical fiber connector is fixed inside from the head end and the tail end, stability is good, the connector can be directly installed on or detached from optical connection equipment by pushing and pulling the tail sleeve in the face of a high-density installation environment, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber communication, and particularly relates to a hot-melt type optical fiber connector. Background Art

[0002] In an optical communication system, it is necessary to connect one section of optical fiber to another section of optical fiber to ensure the smoothness of the optical link. Among them, the hot-melt type optical fiber connector is widely used in the remote household access of FTTH (Fiber to the Home) / FTTR (Fiber to the Room) network. Technicians can perform termination at the actual wiring site and use the hot-melt technology to permanently fuse the optical fiber core with the connector end.

[0003] At present, when the existing hot-melt type optical fiber connectors are applied to a high-density installation environment, during the process of installing or disassembling the connectors on the optical connection device, due to the relatively compact arrangement of multiple connectors, it is not convenient for installers to install and disassemble. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a hot-melt type optical fiber connector, aiming to improve the convenience of installation and disassembly of the hot-melt type optical fiber connector.

[0005] To achieve the above purpose, the utility model proposes a hot-melt type optical fiber connector, including:

[0006] An outer frame sleeve;

[0007] An optical fiber connection component, including a connection component main body and a spool lock nut. One end of the connection component main body penetrates through the outer frame sleeve, and the spool lock nut is used to lock the optical fiber cable to the connection component main body;

[0008] A tail sleeve, which has a head end and a tail end. The head end is sleeved outside the spool lock nut and is detachably connected to the outer frame sleeve.

[0009] In some embodiments of the utility model, a clamping portion is provided on the inner wall of the open end of the outer frame sleeve facing the head end, and an elastic clamping hook is provided at the head end. The elastic clamping hook is clamped in the clamping portion.

[0010] In some embodiments of the utility model, two clamping portions are provided on the inner wall surface of the open end of the outer frame sleeve. The two clamping portions are arranged oppositely, and two corresponding elastic clamping hooks are provided at the head end and are respectively clamped with the two clamping portions.

[0011] In some embodiments of the utility model, the clamping portion is a clamping hole penetrating to the outer wall surface of the outer frame sleeve.

[0012] In some embodiments of the present utility model, a plurality of stress grids are provided at the tail end, and the plurality of stress grids are arranged at intervals along the axial direction and the circumferential direction of the tail sleeve.

[0013] In some embodiments of the present utility model, the length ratio of the tail end to the overall length of the tail sleeve is greater than or equal to 1 / 5 and less than or equal to 2 / 3.

[0014] In some embodiments of the present utility model, the chamfer at the port of the tail end is set to a curved surface.

[0015] In some embodiments of the present utility model, an external thread is provided on the outer wall surface of the main body of the connection component, and the spinnable locking cap is threadedly connected to the main body of the connection component to lock the main body of the connection component and the optical fiber sheath.

[0016] In some embodiments of the present utility model, the hot-melt type optical fiber connector further includes a dust cap, and the dust cap is installed at the end of the optical fiber connection component to cover the internal optical fiber.

[0017] In some embodiments of the present utility model, a pull rod is provided at one end of the dust cap away from the optical fiber connection component.

[0018] In the technical solution of the present utility model, a tail sleeve is provided at the tail end of the hot-melt type optical fiber connector. The head end of the tail sleeve is sleeved outside the spinnable locking cap and is detachably connected to the outer frame sleeve. In this way, during the on-site end-to-end optical fiber process, after the optical fiber is hot-melt fixed in the connector and locked by the spinnable locking cap, the tail sleeve can be connected to the outer frame sleeve, and the two fix the optical fiber connector inside from the head and tail ends, with good stability. Moreover, in the face of a high-density installation environment, the connector can be directly installed or disassembled on the optical connection device by pushing or pulling the tail sleeve, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 It is a schematic structural diagram of an embodiment of the hot-melt type optical fiber connector provided by the present utility model;

[0021] Figure 2 It is an exploded view of an embodiment of the hot-melt type optical fiber connector provided by the present utility model;

[0022] Figure 3Cross-sectional view of an embodiment of the hot-melt optical fiber connector provided by the present utility model;

[0023] Figure 4 is Figure 3 the enlarged view of part A in

[0024] Explanation of the reference numerals in the drawings:

[0025] 100, hot-melt optical fiber connector; 10, outer frame sleeve; 11, clamping portion; 20, optical fiber connection assembly; 21, connection assembly main body; 211, thread; 22, spun-locking cap; 30, tail sleeve; 31, head end; 311, elastic catch; 32, tail end; 40, dust cap; 200, optical fiber.

[0026] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0030] The present utility model provides a hot-melt type optical fiber connector 100, which includes an outer frame sleeve 10, an optical fiber 200 connection component 20, and a tail sleeve 30; wherein, the optical fiber 200 connection component 20 includes a connection component main body 21 and a spun yarn locking cap 22. One end of the connection component main body 21 is disposed inside the outer frame sleeve 10, and the spun yarn locking cap 22 is used to lock the optical fiber 200 cable to the connection component main body 21; the tail sleeve 30 has a head end 31 and a tail end 32, and the head end 31 is sleeved outside the spun yarn locking cap 22 and is detachably connected to the outer frame sleeve 10.

[0031] The above-mentioned connection component main body 21 is generally installed inside the outer frame sleeve 10 by a snap connection method, which is convenient for on-site installation. The inner diameter of the end of the spun yarn locking cap 22 away from the connection component main body 21 is gradually reduced. The connection component main body 21 is a tubular structure. The spun yarn locking cap 22 is connected to one end of the connection component main body 21. During the process of the spun yarn locking cap 22 being sleeved on one end of the connection component main body 21 and locked, the inner wall of the spun yarn locking cap 22 presses the connection component main body 21, so that the end of the connection component main body 21 is in tight fit with the optical fiber 200 cable, thereby achieving locking. The spun yarn locking cap 22 is generally connected to the connection component main body 21 by a threaded connection method. Specifically, in some embodiments of the present utility model, an external thread 211 is provided on the outer wall surface of the connection component main body 21, and the spun yarn locking cap 22 is threadedly connected to the connection component main body 21 to lock the connection component main body 21 and the optical fiber 200 sheath. Of course, the spun yarn locking cap 22 can also adopt an insertion snap connection method. By pressing the spun yarn locking cap 22 axially towards the connection component main body 21, one end of it is snap-fixed to the outer wall of the connection component main body 21, and the inner wall of the other end presses the connection component main body 21. The spun yarn locking cap 22 is generally made of polypropylene or polyvinyl chloride, with high mechanical properties, which can effectively lock and fix the spun yarn of the optical cable and has high chemical stability. The specific structure of the optical fiber 200 connection component 20 is set according to specific circumstances and is not limited herein.

[0032] The tail sleeve 30 is generally made of a ductile plastic material, such as polyvinyl chloride (PVC), polyester (PET), etc., and is not easily broken, thereby ensuring the integrity of the structure. There are various specific implementation manners for the detachable connection between the tail sleeve 30 and the outer frame sleeve 10.

[0033] In some embodiments of the present utility model, two snap connection parts 11 are provided on the inner wall surface of the open end of the outer frame sleeve 10, and the two snap connection parts 11 are arranged opposite to each other. The head end 31 is correspondingly provided with two elastic hooks 311 and is respectively snap-connected to the two snap connection parts 11. With such a setting, during the process of installing the tail sleeve 30 onto the outer frame sleeve 10, the elastic hooks 311 elastically press against the inner wall of the outer frame sleeve 10 until the ends of the elastic hooks 311 are aligned with and snap-connected to the snap connection parts 11, thereby restricting the tail sleeve 30 from disengaging from the outer frame sleeve 10.

[0034] The clamping portion 11 can be a clamping groove or a clamping protrusion. In some embodiments of the present utility model, the clamping portion 11 is a clamping hole penetrating through the outer wall surface of the outer frame sleeve 10. In this way, the elastic clamping hook 311 is snapped into the clamping hole. When the tail sleeve 30 is detached from the outer frame sleeve 10, the end of the elastic clamping hook 311 can be pressed from the outer end of the clamping hole to make it withdraw from the clamping hole, thus facilitating disassembly.

[0035] In some embodiments of the present utility model, two parallel limiting plates are respectively and convexly provided on the inner walls of two opposite sides of the outer frame sleeve 10. Two insertion arms are convexly provided on the end surface of the tail sleeve 30. Elastic clamping hooks 311 are provided on the opposite sides of the end of the insertion arm. The insertion arm passes through between the two limiting plates. When the two elastic clamping hooks 311 pass through the two limiting plates, they spring open and are limited on one side of the limiting plates.

[0036] Further, in some embodiments of the present utility model, a plurality of stress grids are provided at the tail end 32, and the plurality of stress grids are arranged at intervals along the axial direction and the circumferential direction of the tail sleeve 30.

[0037] In this way, for the tail sleeve 30 made of plastic material, when the tail end 32 is stressed, a large elastic deformation amount can be generated. When the part of the optical fiber 200 close to the tail end 32 of the tail sleeve 30 is bent under stress, the tail end 32 can provide an elastic supporting force to keep the bending degree of the optical fiber 200 within a certain range, thereby avoiding excessive bending damage of the optical fiber 200. This enables the optical fiber 200 connector to be applicable to an environment with a narrower installation space, and has better applicability and protection for light.

[0038] Considering that if the overall length of the grid part provided at the tail end 32 is too large, the supportability of the tail sleeve 30 will be poor, and if it is too short, the bending angle of the optical fiber 200 will be restricted by the tail sleeve 30. Therefore, in some embodiments of the present utility model, the length ratio of the tail end 32 to the whole tail sleeve 30 is greater than or equal to 1 / 5 and less than or equal to 2 / 3. This can avoid both the problem that the overall length of the grid part provided at the tail end 32 is too large resulting in poor supportability of the tail sleeve 30 and the problem that it is too short resulting in the tail sleeve 30 overly restricting the bending angle of the optical fiber 200.

[0039] Further, in some embodiments of the present utility model, the chamfer at the port of the tail end 32 is set as a curved surface. Such a setting can avoid the problem that the optical fiber 200 is overly bent and damaged due to a large pressure generated at the contact portion between the optical fiber 200 and the port of the tail end 32 due to a small contact area.

[0040] In some embodiments of the present utility model, the hot-melt type optical fiber connector 100 further includes a dust cap 40. The dust cap 40 is installed at the end of the optical fiber 200 connection assembly 20 to cover the internal optical fiber 200 to prevent dust and impurities from entering the internal optical fiber 200 and affecting the light transmission performance.

[0041] In some embodiments of the present utility model, a pull rod 41 is provided at one end of the dust cap 40 away from the optical fiber connection assembly, which facilitates an operator to directly pull the pull rod 41 to remove the dust cap 40.

[0042] The above description is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the technical concept of the present utility model, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A hot-melt type optical fiber connector (100), characterized in that, Comprising: An outer frame sleeve (10); An optical fiber connection component (20), including a connection component body (21) and a spinnable locking cap (22), one end of the connection component body (21) is inserted into the outer frame sleeve (10), and the spinnable locking cap is used to lock an optical fiber cable to the connection component body (21); A tail sleeve (30), the tail sleeve (30) has a head end (31) and a tail end (32), the head end (31) is sleeved outside the spinnable locking cap (22) and is detachably connected to the outer frame sleeve (10).

2. The hot-melt type optical fiber connector (100) according to claim 1, characterized in that, An inner wall of an opening end of the outer frame sleeve (10) facing the head end (31) is provided with a clamping portion (11), and the head end (31) is provided with an elastic catch (311), and the elastic catch (311) is clamped in the clamping portion (11).

3. The heat-melt type optical fiber connector (100) according to claim 2, characterized in that, The inner wall surface of an opening end of the outer frame sleeve (10) is provided with two of the clamping portions (11), the two clamping portions (11) are arranged oppositely, and the head end (31) is correspondingly provided with two of the elastic catches (311) and is respectively clamped with the two clamping portions (11).

4. The hot-melt optical fiber connector (100) according to claim 3, characterized in that The clamping portion (11) is a clamping hole penetrating to the outer wall surface of the outer frame sleeve (10).

5. The hot-melt type optical fiber connector (100) according to any one of claims 1 to 4, characterized in that, The tail end (32) is provided with a plurality of stress grids, and the plurality of stress grids are arranged at intervals along the axial and circumferential directions of the tail sleeve.

6. The hot-melt type optical fiber connector (100) according to claim 5, characterized in that, The length ratio of the tail end (32) to the whole tail sleeve is greater than or equal to 1 / 5 and less than or equal to 2 / 3.

7. The hot-melt type optical fiber connector (100) according to any one of claims 1 to 4, characterized in that, The port chamfer of the tail end (32) is set as a curved surface.

8. The hot-melt type optical fiber connector (100) according to any one of claims 1 to 4, characterized in that, An outer wall surface of the connection component body (21) is provided with an external thread (211), and the spinnable locking cap (22) is threadedly connected to the connection component body (21) by the thread (211) to lock the connection component body (21) and an optical fiber sheath.

9. The hot-melt type optical fiber connector (100) according to any one of claims 1 to 4, characterized in that, The hot-melt type optical fiber connector (100) further includes a dust cap (40), and the dust cap (40) is installed at an end of the optical fiber connection component (20) to cover an internal optical fiber.

10. The hot-melt type optical fiber connector (100) according to claim 9, characterized in that, One end of the dust cap away from the optical fiber connection component is provided with a pull rod.

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