Prefabricated optical fiber connector

Abstract

The invention relates to a preassembled optical fiber connector, which comprises a connector main body provided with an assembly hole penetrating through the head part and the tail part of the connector main body, and a retaining block is convexly arranged on the hole wall of the assembly hole; a locking groove matched with the retaining block is concavely formed in the circumferential side wall of the preassembling part; an insertion core body is fixed at the front end of the preassembling part, a pre-embedded optical fiber is fixed at the tail part of the preassembling part, and the insertion core body and the pre-embedded optical fiber are pre-connected and assembled with the preassembling part into a whole before the pre-embedded optical fiber and an external bare optical fiber are subjected to hot melting; the elastic component is arranged in the assembly hole, and one end of the elastic component abuts against the side, facing the tail of the connector body, of the retaining block. According to the pre-assembled optical fiber connector designed by the invention, a pre-assembly design is adopted, the insertion core body and the pre-embedded optical fiber are pre-connected and are assembled with the pre-assembled part into a whole, the assembly hole with a retaining structure and the pre-assembled part which is matched with the assembly hole and is provided with a locking structure are adopted, and the pre-assembled part can be quickly positioned and fixed under the action of the elastic component; and the connection stability is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber connectors, in particular to a preassembled optical fiber connector. Background Art

[0002] In the existing technology, optical fiber connectors play a vital role in the construction of optical fiber networks. Optical fiber connectors such as SC, FC, ST, etc. have been widely used due to their advantages such as convenient use, reliable connection, and low insertion loss. However, despite the excellent performance of these connectors, there are still some problems that need to be solved in practical applications.

[0003] First of all, the installation process of existing fiber optic connectors has certain requirements on the skill level of the operator. Although in an ideal situation, installation by professional technicians can ensure the quality of the connection, in actual application scenarios, many non-professionals, including end users, also need to participate in the installation of fiber optic connectors. These users who lack professional assembly skills often find it difficult to control the assembly quality and connector performance, thus affecting the overall stability and transmission efficiency of the fiber optic network. In order to solve this problem, end users usually choose to directly purchase pre-assembled fiber optic patch cords. Although this is convenient, it also requires merchants to use standardized connectors to connect external optical fibers when providing customized fiber optic solutions to meet the personalized needs of different users for fiber optic parameters.

[0004] Secondly, in order to facilitate on-site installation, standardized connectors usually adopt a relatively complex internal design to adapt to the convenience of on-site operation. Although this design facilitates on-site installation, it also brings additional costs. Therefore, when merchants use standardized connectors to select and assemble customized optical fibers, the high connector costs will be directly passed on to the end user's purchase price, which undoubtedly increases the user's economic burden and is not conducive to the large-scale promotion and application of optical fiber connectors.

[0005] In addition, the quality of on-site fiber optic connector assembly is significantly affected by the operator's proficiency and the operating environment. Due to the uneven skill levels of operators and the complexity and uncertainty of the on-site environment, it is often difficult to ensure the quality of assembly, and the stability and reliability of the connection are also reduced, which brings potential risks to the stable operation of the fiber optic network. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a preassembled optical fiber connector with stable and reliable assembly quality.

[0007] In order to achieve the above-mentioned object, the preassembled optical fiber connector designed by the present invention comprises:

[0008] The joint body has an assembly hole that passes through the head and tail of the joint body, and a stop block is protruding on the hole wall of the assembly hole;

[0009] The pre-installed part has a locking groove on its circumferential side wall that cooperates with the stop block; the front end of the pre-installed part is fixed with a core body, and the rear end is fixed with a pre-buried optical fiber, and the core body and the pre-buried optical fiber are pre-connected and assembled into one with the pre-installed part before the pre-buried optical fiber is thermally fused with the external optical fiber bare fiber;

[0010] An elastic component is arranged in the assembly hole, one end of which abuts against a side of the stop block toward the rear of the joint body;

[0011] Wherein, when the locking groove and the stop block are aligned and assembled, the pre-installed part can be inserted into the assembly hole and compress the elastic component, so that the elastic component pushes the pre-installed part to make it have a tendency to move toward the head of the joint body and abut against the stop block; when the pre-installed part compresses the elastic component, the stop block passes over the pre-installed part and extends into the locking groove; when the locking groove and the stop block are misaligned and assembled, the circumferential side wall of the pre-installed part abuts against the opening edge of the assembly hole to control the depth of the pre-installed part inserted into the assembly hole.

[0012] Preferably, two avoidance grooves arranged opposite to each other are provided on the hole wall of the assembly hole, elastic arms extending along the axial direction of the assembly hole are provided in the avoidance grooves, and a stop block is provided on opposite sides of the two elastic arms.

[0013] Preferably, the elastic arm, the stop block and the joint body are integrally formed.

[0014] Preferably, a first guiding slope is provided on a side of the retaining block facing away from the elastic component, and the first guiding slope is used to guide the pre-installed part to pass over the retaining block and be inserted into the assembly hole to compress the elastic component.

[0015] Preferably, the pre-installation portion is provided with a second guiding inclined surface corresponding to the position of the first guiding inclined surface.

[0016] Preferably, at least one guide groove is recessed in the head of the joint body, the guide groove is connected to the assembly hole and extends axially along the assembly hole; a sliding block corresponding to the position of the guide groove is convexly provided on the circumferential side wall of the pre-installed part.

[0017] Preferably, a convex ring is convexly provided at the tail of the pre-installed part, the pre-buried optical fiber at least partially passes through the convex ring and is placed outside the convex ring, and a heat shrink tube is sleeved on the convex ring.

[0018] Preferably, one end of the insert core body facing away from the pre-installed portion is provided with a tail plug for holding.

[0019] Preferably, the elastic component is a spring.

[0020] The preinstalled fiber optic connector designed by the present invention adopts a pre-assembly design, in which the core body and the embedded optical fiber are pre-connected and assembled with the pre-installed part as a whole, and adopts an assembly hole with a stop structure and a pre-installed part with a locking structure that cooperates therewith. Combined with the effect of the elastic component, the pre-installed part can be quickly positioned and fixed, thereby ensuring the stability of the connection. This not only simplifies the operation, but also reduces the skill requirements for the operator, so that non-professionals can also complete the fiber optic connection quickly and reliably, thereby reducing the dependence on professional and technical personnel, and also reducing the assembly quality risk caused by the uncertainty of the operating environment, providing a solid guarantee for the stable operation of the fiber optic network. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a pre-assembled optical fiber connector provided in an embodiment of the present application.

[0022] Figure 2 yes Figure 1 Exploded three-dimensional diagram.

[0023] Figure 3 It is a schematic diagram of the assembly of the pre-assembled optical fiber connector provided in an embodiment of the present application.

[0024] Figure 4 It is a schematic diagram of the assembly of the pre-installed part and the connector body provided in an embodiment of the present application.

[0025] Among them: connector body 10, assembly hole 11, avoidance groove 12, elastic arm 13, guide groove 14, stop block 20, first guide slope 21, pre-installed part 30, locking groove 31, second guide slope 32, slider 33, convex ring 34, ferrule core 40, embedded optical fiber 50, heat shrink tube 70, tail plug 80, external optical fiber 90. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] like Figures 1 to 4 As shown, the preassembled optical fiber connector described in this embodiment includes a connector body 10, a preassembled portion 30 and an elastic component.

[0028] The joint body 10 is a roughly cylindrical or square columnar structure, and has an assembly hole 11 that passes through its head and tail, and a stop block 20 is protruding from the hole wall of the assembly hole 11. In this embodiment, the stop block 20 can be a protruding structure protruding from the hole wall, and its shape can be a rectangular block or a trapezoidal block, which plays a role in preventing the pre-installed part 30 from moving in the reverse direction.

[0029] The pre-installed part 30 is a cylindrical or square column structure that matches the inner shape of the assembly hole, and its circumferential side wall is recessed with a locking groove 31 that matches the stop block 20; the structure of the locking groove 31 should match the shape of the stop block 20 and present a corresponding groove structure. The front end of the pre-installed part 30 is fixed with a ferrule core 40, and the rear end is fixed with a pre-buried optical fiber 50. The ferrule core 40 and the pre-buried optical fiber 50 are pre-connected and assembled with the pre-installed part 30 before the pre-buried optical fiber 50 is hot-fused with the bare fiber of the external optical fiber 90, forming a complete pre-installed component for subsequent rapid installation.

[0030] An elastic component is arranged in the assembly hole 11, and one end of which abuts against the side of the stop block 20 toward the tail of the connector body 10; in this embodiment, the elastic component can be a spring, one end of which abuts against the side of the stop block 20 toward the tail of the connector body 10 to provide elastic force for the axial movement of the pre-installed part 30.

[0031] Among them, when the locking groove 31 is aligned and assembled with the stop block 20, the pre-installed part 30 can be inserted into the assembly hole 11 and compress the elastic component, so that the elastic component pushes the pre-installed part 30 so that it has a tendency to move toward the head of the joint body 10 and abuts against the stop block 20; that is, when the pre-installed part 30 is inserted into the assembly hole 11 and compresses the elastic component, the elastic component will push the pre-installed part 30 so that it has a tendency to move toward the head of the joint body 10, and abut the pre-installed part 30 against the stop block 20 to avoid shaking. At this time, the pre-installed part 30 compresses the elastic component, and the stop block 20 passes over the pre-installed part 30 and extends into the locking groove 31; thereby realizing the axial fixation of the pre-installed part 30 in the assembly hole 11. When the locking groove 31 and the stop block 20 are assembled in a misaligned manner, the circumferential side wall of the pre-installed portion 30 abuts against the opening edge of the assembly hole 11 to control the insertion depth of the pre-installed portion 30 into the assembly hole 11, thereby avoiding unexpected incorrect assembly.

[0032] In summary, the preassembled fiber optic connector pre-assembles the core body 40 and the embedded optical fiber 50, and the modular connector body 10 and the pre-installed part 30, so that after the embedded optical fiber 50 is hot-fused with the bare fiber of the external optical fiber 90, it only needs to align the pre-installed part 30 directly with the assembly hole 11 and insert it. The whole process is intuitive and easy to operate, and can ensure the reliability and consistency of the connection quality.

[0033] In some embodiments, Figure 2 , Figure 4 As shown, two avoidance grooves 12 arranged opposite to each other are provided on the hole wall of the assembly hole 11, and elastic arms 13 extending along the axial direction of the assembly hole 11 are provided in the avoidance grooves 12, and a stop block 20 is provided on the opposite sides of the two elastic arms 13.

[0034] Specifically, the avoidance groove 12 is a groove structure formed on the inner wall of the assembly hole 11, and its main function is to provide space for the elastic deformation of the elastic arm 13. The elastic arm 13 is a thin sheet structure with a certain elasticity. The specific elastic arm 13 can be made of elastic plastic or metal sheet, so that it has good elastic deformation ability. When the pre-installed part 30 is inserted into the assembly hole 11, its side wall will first contact the stop block 20 on the elastic arm 13. Through the deformation of the elastic arm 13, the stop block 20 will move away from the surface of the pre-installed part 30, so that it can be smoothly inserted into the assembly hole 11. When the pre-installed part 30 is inserted into place, the elastic arm 13 returns to its original state, and the stop block 20 at its end is embedded in the locking groove 31 of the pre-installed part 30, so as to realize the axial fixation of the pre-installed part 30 and ensure the stability and reliability of the pre-installed part 30 in the assembly hole 11.

[0035] In some embodiments, the elastic arm 13, the stop block 20 and the connector body 10 are integrally formed. The integrally formed structure has no gaps at the connection, which can provide better structural strength and rigidity to enhance the overall stability and durability of the connector and reduce damage caused by external impact or vibration.

[0036] In some embodiments, Figure 4 As shown, the first guide slope 21 is provided on the side of the stop block 20 away from the elastic component, and the first guide slope 21 is used to guide the pre-installed part 30 to pass over the stop block 20 and be inserted into the assembly hole 11 to compress the elastic component. In this way, when the pre-installed part 30 is inserted into the assembly hole 11, its side wall first contacts the first guide slope 21, and under the action of the insertion force, the pre-installed part 30 gradually pushes the elastic arm 13 away along the first guide slope 21, so that the stop block 20 gradually deforms, and finally smoothly passes over the surface of the pre-installed part 30 and enters the locking groove 31. Due to the presence of the first guide bevel 21, the pre-installed part 30 will not directly impact the stop block 20 during the insertion process, but will gradually complete the insertion by sliding, thereby reducing the assembly friction and the impact on the stop block 20 and the elastic arm 13, thereby improving the overall reliability and durability of the connector. At the same time, the first guide bevel 21 can guide the pre-installed part 30 to be inserted into the assembly hole 11 in the correct direction, preventing the pre-installed part 30 from getting stuck or offset during the insertion process, thereby ensuring the accuracy of the assembly.

[0037] In some embodiments, Figure 3 , Figure 4 As shown, the pre-installed part 30 is provided with a second guide bevel 32 corresponding to the position of the first guide bevel 21. When the pre-installed part 30 is inserted into the assembly hole 11, the second guide bevel 32 on its side wall first contacts the first guide bevel 21 on the stop block 20. Under the action of the insertion force, the two bevels cooperate with each other to achieve smoother introduction. This double guide bevel design can further reduce the friction during the insertion of the pre-installed part 30, and guide the pre-installed part 30 to be inserted along the correct path to avoid jamming or deviation, thereby ensuring the smoothness and reliability of assembly.

[0038] In some embodiments, Figure 3 , Figure 4 As shown, the head of the joint body 10 is recessed with at least one guide groove 14, which is connected to the assembly hole 11 and extends along the axial direction of the assembly hole 11; a slider 33 corresponding to the position of the guide groove 14 is convexly provided on the circumferential side wall of the pre-installed part 30. When the pre-installed part 30 is inserted into the assembly hole 11, the slider 33 contacts the guide groove 14 and slides along the guide groove 14, thereby guiding the pre-installed part 30 to be inserted into the assembly hole 11 in the correct direction, and due to the cooperation between the guide groove 14 and the slider 33, the pre-installed part 30 will not rotate or misalign during the insertion process, ensuring that the locking groove 31 can be accurately aligned with the stop block 20 to achieve a reliable connection.

[0039] In some embodiments, Figure 2 , Figure 3 , Figure 4 As shown, a convex ring 34 is convexly provided at the tail of the pre-installed part 30, and the pre-buried optical fiber 50 at least partially passes through the convex ring 34 and is placed outside the convex ring 34, and a heat shrink tube 70 is sleeved on the convex ring 34. Specifically, the convex ring 34 is an annular convex structure integrally formed at the tail of the pre-installed part 30, and has a through hole inside, and the pre-buried optical fiber 50 at least partially passes through the through hole and extends outside the convex ring 34. After the pre-buried optical fiber 50 passes through the convex ring 34, the structure of the convex ring 34 can be used to support and limit the tail of the pre-buried optical fiber 50, reduce the movement and bending of the optical fiber, and provide mechanical protection, while the heat shrink tube 70 is sleeved outside the convex ring 34. When heated, the heat shrink tube 70 will shrink, wrapping the convex ring 34 and the pre-buried optical fiber 50 after being fused with the external optical fiber 90, providing additional protection for the pre-buried optical fiber 50, and further enhancing the fixing strength of the optical fiber connection, so that it is not easy to loosen.

[0040] In some embodiments, Figure 3 , Figure 4 As shown, a tail plug 80 for holding is sleeved on one end of the ferrule core body 40 away from the pre-installation part 30. The tail plug 80 provides a convenient holding position, so that the operator can operate the pre-installation part 30 more easily.

[0041] The preinstalled fiber optic connector provided in this embodiment adopts a pre-assembly design, in which the core body and the embedded optical fiber are pre-connected and assembled with the pre-installed part as one body, and adopts an assembly hole with a stop structure and a pre-installed part with a locking structure that cooperates therewith. Combined with the effect of the elastic component, the pre-installed part can be quickly positioned and fixed, thereby ensuring the stability of the connection. This not only simplifies the operation, but also reduces the skill requirements for the operator, so that non-professionals can also complete the fiber optic connection quickly and reliably, thereby reducing the dependence on professional and technical personnel, and also reducing the assembly quality risk caused by the uncertainty of the operating environment, providing a solid guarantee for the stable operation of the fiber optic network.

[0042] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preassembled optical fiber connector, characterized in that: include: The joint body has an assembly hole that passes through the head and tail of the joint body, and a stop block is protruding on the hole wall of the assembly hole; The pre-installed part has a locking groove on its circumferential side wall that cooperates with the stop block; the front end of the pre-installed part is fixed with a core body, and the rear end is fixed with a pre-buried optical fiber, and the core body and the pre-buried optical fiber are pre-connected and assembled into one with the pre-installed part before the pre-buried optical fiber is thermally fused with the external optical fiber bare fiber; An elastic component is arranged in the assembly hole, one end of which abuts against a side of the stop block toward the rear of the joint body; Wherein, when the locking groove and the stop block are aligned and assembled, the pre-installed part can be inserted into the assembly hole and compress the elastic component, so that the elastic component pushes the pre-installed part to make it have a tendency to move toward the head of the joint body and abut against the stop block; when the pre-installed part compresses the elastic component, the stop block passes over the pre-installed part and extends into the locking groove; when the locking groove and the stop block are misaligned and assembled, the circumferential side wall of the pre-installed part abuts against the opening edge of the assembly hole to control the depth of the pre-installed part inserted into the assembly hole.

2. The preassembled optical fiber connector according to claim 1, characterized in that: Two avoidance grooves arranged opposite to each other are provided on the hole wall of the assembly hole, elastic arms extending along the axial direction of the assembly hole are arranged in the avoidance grooves, and a stop block is provided on the opposite sides of the two elastic arms.

3. The preassembled optical fiber connector according to claim 2, characterized in that: The elastic arm, the stop block and the joint body are integrally formed.

4. The preassembled optical fiber connector according to claim 1, characterized in that: A first guiding slope is provided on a side of the stop block facing away from the elastic component, and the first guiding slope is used to guide the pre-installed part to pass over the stop block and be inserted into the assembly hole to compress the elastic component.

5. The preassembled optical fiber connector according to claim 4, characterized in that: The pre-installation portion is provided with a second guiding inclined surface corresponding to the position of the first guiding inclined surface.

6. The preassembled optical fiber connector according to claim 1, characterized in that: The head of the joint body is recessed with at least one guide groove, which is connected to the assembly hole and extends along the axial direction of the assembly hole; a sliding block corresponding to the position of the guide groove is convexly provided on the circumferential side wall of the pre-installed part.

7. The preassembled optical fiber connector according to claim 1, characterized in that: A convex ring is convexly provided at the tail of the pre-installed part, and at least a part of the pre-buried optical fiber passes through the convex ring and is arranged outside the convex ring. A heat shrink tube is sleeved on the convex ring.

8. The preassembled optical fiber connector according to claim 1, characterized in that: One end of the insert core body away from the pre-installed portion is sleeved with a tail insert for holding.

9. The preassembled optical fiber connector according to claim 1, characterized in that: The elastic component is a spring.

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