Prefabricated optical fiber connector

Abstract

The utility model relates to a preassembled optical fiber connector, comprising a joint main body which is provided with an assembly hole penetrating through the head part and the tail part of the joint main body, and the hole wall of the assembly hole is convexly provided with a retaining block; 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 preassembled optical fiber connector designed by the utility model, a preassembly design is adopted, the insertion core body and the pre-embedded optical fiber are connected in advance and are assembled with the preassembled part into a whole, the assembly hole with a retaining structure and the preassembled part which is matched with the assembly hole and is provided with a locking structure are adopted, and the preassembled optical fiber connector is formed by combining the action of the elastic component. The preassembling part can be quickly positioned and fixed, and the connection stability is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber connector technology, and in particular to a pre-installed optical fiber connector. Background Technology

[0002] In existing technologies, fiber optic connectors play a crucial role in the construction of fiber optic networks. Types of fiber optic connectors such as SC, FC, and ST are widely used due to their ease of use, reliable connection, and low insertion loss. However, despite their excellent performance, these connectors still present some problems that need to be addressed in practical applications.

[0003] First, the installation process of existing fiber optic connectors requires a certain level of skill from the operators. While ideally, installation by professional technicians can ensure connection quality, in real-world applications, many non-professionals, including end users, also need to participate in the installation of fiber optic connectors. These users, lacking professional assembly skills, often struggle to control assembly quality and connector performance, thus affecting the overall stability and transmission efficiency of the fiber optic network. To address this issue, end users typically choose to purchase pre-assembled fiber optic patch cords. While convenient, this necessitates vendors using standardized connectors to attach external fibers when providing customized fiber optic solutions to meet the individualized fiber optic parameter requirements of different users.

[0004] Secondly, to facilitate on-site installation, standardized connectors typically employ relatively complex internal designs to ensure ease of operation. While this design facilitates installation, it also increases costs. Therefore, when vendors use standardized connectors for the selection and assembly of customized optical fibers, the high connector cost is directly passed on to the end user, undoubtedly increasing their financial burden and hindering the large-scale promotion and application of fiber optic connectors.

[0005] Furthermore, the quality of field-assembled fiber optic connectors is significantly affected by the operator's skill level and the operating environment. Due to the varying skill levels of operators, coupled with the complexity and uncertainty of the field environment, assembly quality is often difficult to guarantee, resulting in reduced stability and reliability of the connection. This poses a potential risk to the stable operation of the fiber optic network. Utility Model Content

[0006] To address the aforementioned problems, this invention provides a pre-assembled fiber optic connector with stable and reliable assembly quality.

[0007] To achieve the above objectives, the pre-installed fiber optic connector designed in this utility model includes:

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

[0009] The pre-assembly part has a locking groove on its circumferential sidewall that cooperates with the anti-reverse block; the front end of the pre-assembly part is fixed with a ferrule core and the rear end is fixed with a pre-embedded optical fiber. The ferrule core and the pre-embedded optical fiber are pre-connected and assembled into a whole with the pre-assembly part before the pre-embedded optical fiber is thermally fused with the external optical fiber bare fiber.

[0010] An elastic component is disposed in the mounting hole, with one end abutting against the side of the anti-reverse block facing the tail of the connector body;

[0011] When the locking groove and the anti-reverse block are aligned and assembled, the pre-installed part can be inserted into the assembly hole and compress the elastic member, so that the elastic member pushes the pre-installed part to have a tendency to move towards the head of the connector body and abut against the anti-reverse block; when the pre-installed part compresses the elastic member, the anti-reverse block extends into the locking groove past the pre-installed part; when the locking groove and the anti-reverse block are misaligned and assembled, the circumferential sidewall of the pre-installed part abuts against the opening edge of the assembly hole to limit the depth of the pre-installed part inserted into the assembly hole.

[0012] Preferably, the mounting hole has two opposing clearance grooves on its wall, and each clearance groove has an elastic arm extending axially along the mounting hole. Each of the two elastic arms has a backstop block on its opposite side.

[0013] Preferably, the elastic arm, the anti-reverse block, and the connector body are integrally formed.

[0014] Preferably, the anti-reverse block has a first guide slope on the side opposite to the elastic component, the first guide slope being used to guide the pre-installed part past the anti-reverse block and insert into the assembly hole to compress the elastic component.

[0015] Preferably, the pre-assembly part is provided with a second guide slope corresponding to the position of the first guide slope.

[0016] Preferably, the head of the connector body is recessed with at least one guide groove, the guide groove is connected to the assembly hole and extends along the axial direction of the assembly hole; the circumferential sidewall of the pre-assembly part is provided with a slider corresponding to the position of the guide groove.

[0017] Preferably, the tail of the pre-installed part is provided with a protruding ring, the pre-embedded optical fiber passes through the protruding ring at least partially and is placed outside the protruding ring, and a heat shrink tubing is fitted on the protruding ring.

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

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

[0020] The pre-assembled fiber optic connector designed in this invention adopts a pre-assembly design, pre-connecting the ferrule core and pre-embedded optical fiber and assembling them into a pre-assembled unit. It uses an assembly hole with a backstop structure and a matching pre-assembled unit with a locking structure. Combined with the function of elastic components, it can achieve rapid positioning and fixation of the pre-assembled unit, ensuring the stability of the connection. This not only simplifies the operation but also reduces the skill requirements of the operators, enabling non-professionals to quickly and reliably complete fiber optic connections. This reduces the reliance on professional technicians and also reduces the assembly quality risks caused by uncertainties in the operating environment, providing a solid guarantee for the stable operation of fiber optic networks. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the pre-installed fiber optic connector structure provided in the embodiments of this application.

[0022] Figure 2 yes Figure 1 A three-dimensional exploded view.

[0023] Figure 3 This is a schematic diagram of the assembly of a pre-installed fiber optic connector provided in an embodiment of this application.

[0024] Figure 4 This is a schematic diagram of the assembly of the pre-assembled part and the connector body provided in the embodiments of this application.

[0025] The components include: connector body 10, assembly hole 11, clearance groove 12, elastic arm 13, guide groove 14, anti-reverse 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, pre-embedded optical fiber 50, heat shrink tubing 70, tail plug 80, and external optical fiber 90. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] like Figures 1 to 4 As shown, the pre-installed fiber optic connector described in this embodiment includes a connector body 10, a pre-installed part 30, and an elastic component.

[0028] The connector body 10 is generally cylindrical or square-column shaped, with an assembly hole 11 extending through its head and tail. A backstop block 20 protrudes from the wall of the assembly hole 11. In this embodiment, the backstop block 20 can be a protruding structure extending from the hole wall, and its shape can be rectangular or trapezoidal, serving to prevent the pre-assembly part 30 from moving in the opposite direction.

[0029] The pre-assembly part 30 has a cylindrical or square columnar structure adapted to the shape of the assembly hole, and its circumferential sidewall is recessed with a locking groove 31 that mates with the anti-reverse block 20; the structure of the locking groove 31 should match the shape of the anti-reverse block 20, and be a corresponding groove structure. The front end of the pre-assembly part 30 is fixed with a ferrule core 40, and the rear end is fixed with a pre-embedded optical fiber 50. The ferrule core 40 and the pre-embedded optical fiber 50 are pre-connected and assembled with the pre-assembly part 30 before the pre-embedded optical fiber 50 is thermally fused with the bare external optical fiber 90, forming a complete pre-assembly assembly to facilitate subsequent rapid installation.

[0030] An elastic component is disposed within the mounting hole 11, with one end abutting against the side of the anti-reverse block 20 facing the tail of the connector body 10. In this embodiment, the elastic component may be a spring, with one end abutting against the side of the anti-reverse block 20 facing the tail of the connector body 10, providing elastic force for the axial movement of the pre-installed part 30.

[0031] When the locking groove 31 is aligned and assembled with the anti-reverse 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 to have a tendency to move towards the head of the connector body 10 and abut against the anti-reverse block 20; that is, when the pre-installed part 30 is inserted into the assembly hole 11 and the elastic component is compressed, the elastic component will push the pre-installed part 30 to have a tendency to move towards the head of the connector body 10 and make the pre-installed part 30 abut against the anti-reverse block 20 to prevent shaking. At this time, the pre-installed part 30 compresses the elastic component, and the anti-reverse block 20 extends past the pre-installed part 30 into the locking groove 31; thereby achieving axial fixation of the pre-installed part 30 in the assembly hole 11. When the locking groove 31 and the anti-reverse block 20 are misaligned during assembly, the circumferential sidewall of the pre-installed part 30 abuts against the opening edge of the assembly hole 11 to limit the depth of the pre-installed part 30 inserted into the assembly hole 11 and avoid unexpected incorrect assembly.

[0032] In summary, this pre-assembled fiber optic connector, through the pre-assembly of the ferrule core 40 and the pre-embedded fiber 50, as well as the modular connector body 10 and the pre-assembly part 30, allows the pre-embedded fiber 50 to be inserted directly into the assembly hole 11 after the pre-embedded fiber 50 has been thermally spliced ​​with the bare external fiber 90. The whole process is intuitive, easy to operate, and ensures the reliability and consistency of the connection quality.

[0033] In some embodiments, such as Figure 2 , Figure 4 As shown, two opposing clearance grooves 12 are provided on the wall of the assembly hole 11. An elastic arm 13 extending along the axial direction of the assembly hole 11 is provided in the clearance groove 12. A stop block 20 is provided on the opposite side of the two elastic arms 13.

[0034] Specifically, the clearance groove 12 is a groove structure formed on the inner wall of the assembly hole 11. 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 degree of elasticity. Specifically, the elastic arm 13 can be made of elastic plastic or metal sheet, so that it has good elastic deformation capability. When the pre-installed part 30 is inserted into the assembly hole 11, its side wall will first contact the anti-retraction block 20 on the elastic arm 13. Through the deformation of the elastic arm 13, the anti-retraction block 20 will make way for the surface of the pre-installed part 30, so that it can be smoothly inserted into the assembly hole 11. After the pre-installed part 30 is inserted into place, the elastic arm 13 returns to its original shape, and the anti-retraction 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 anti-reverse 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, thereby enhancing the overall stability and durability of the connector and reducing damage caused by external impacts or vibrations.

[0036] In some embodiments, such as Figure 4 As shown, the anti-retraction block 20 has a first guide slope 21 on the side opposite to the elastic component. The first guide slope 21 is used to guide the pre-installed part 30 past the anti-retraction block 20 and into the assembly hole 11 to compress the elastic component. Thus, when the pre-installed part 30 is inserted into the assembly hole 11, its sidewall first contacts the first guide slope 21. 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, causing the anti-retraction block 20 to gradually deform and finally smoothly pass over the surface of the pre-installed part 30 and enter the locking groove 31. Due to the presence of the first guide slope 21, the pre-installed part 30 will not directly impact the anti-reverse block 20 during insertion. Instead, it will gradually complete the insertion by sliding, reducing assembly friction and impact on the anti-reverse block 20 and the elastic arm 13. This improves the overall reliability and durability of the connector. At the same time, the first guide slope 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 shifting during insertion, thus ensuring the accuracy of assembly.

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

[0038] In some embodiments, such as Figure 3 , Figure 4 As shown, the head of the connector body 10 is recessed with at least one guide groove 14, which connects to the assembly hole 11 and extends axially along the assembly hole 11. A slider 33, corresponding to the position of the guide groove 14, protrudes from the circumferential sidewall of the pre-assembly part 30. When the pre-assembly 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-assembly part 30 to be inserted into the assembly hole 11 in the correct direction. Due to the cooperation between the guide groove 14 and the slider 33, the pre-assembly part 30 will not rotate or misalign during insertion, ensuring that the locking groove 31 can be accurately aligned with the anti-reverse block 20, achieving a reliable connection.

[0039] In some embodiments, such as Figure 2 , Figure 3 , Figure 4 As shown, the pre-assembly part 30 has a protruding ring 34 at its tail. The pre-embedded optical fiber 50 passes through the protruding ring 34 at least partially and is positioned outside the protruding ring 34. A heat-shrink tubing 70 is fitted onto the protruding ring 34. Specifically, the protruding ring 34 is an annular protrusion integrally formed at the tail of the pre-assembly part 30. It has a through hole inside, through which the pre-embedded optical fiber 50 passes at least partially and extends outside the protruding ring 34. After the pre-embedded optical fiber 50 passes through the protruding ring 34, the structure of the protruding ring 34 can be used to support and limit the tail of the pre-embedded optical fiber 50, reducing the movement and bending of the optical fiber and providing mechanical protection. The heat-shrink tubing 70 is fitted outside the protruding ring 34. When heated, the heat-shrink tubing 70 will shrink, wrapping the protruding ring 34 and the pre-embedded optical fiber 50 after being fused with the external optical fiber 90, providing additional protection for the pre-embedded optical fiber 50 and further enhancing the fixing strength of the optical fiber connection, making it less prone to loosening.

[0040] In some embodiments, such as Figure 3 , Figure 4 As shown, the end of the insert core 40 facing away from the pre-installation part 30 is fitted with a tail plug 80 for gripping. The tail plug 80 provides a convenient gripping part, making it easier for the operator to operate the pre-installation part 30.

[0041] The pre-assembled fiber optic connector provided in this embodiment adopts a pre-assembly design, pre-connecting the ferrule core and pre-embedded optical fiber and assembling them into a pre-assembled unit. It uses an assembly hole with a backstop structure and a matching pre-assembled unit with a locking structure. Combined with the function of elastic components, it can achieve rapid positioning and fixation of the pre-assembled unit, ensuring the stability of the connection. This not only simplifies the operation but also reduces the skill requirements of the operators, enabling non-professionals to quickly and reliably complete fiber optic connections. This reduces the reliance on professional technicians and also reduces the assembly quality risks caused by uncertainties in the operating environment, providing a solid guarantee for the stable operation of the fiber optic network.

[0042] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pre-assembled fiber optic connector, characterized in that, include: The connector body has an assembly hole that passes through its head and tail, and a backstop block is protruding on the wall of the assembly hole; The pre-assembly part has a locking groove on its circumferential sidewall that cooperates with the anti-reverse block; the front end of the pre-assembly part is fixed with a ferrule core and the rear end is fixed with a pre-embedded optical fiber. The ferrule core and the pre-embedded optical fiber are pre-connected and assembled into a whole with the pre-assembly part before the pre-embedded optical fiber is thermally fused with the external optical fiber bare fiber. An elastic component is disposed in the mounting hole, with one end abutting against the side of the anti-reverse block facing the tail of the connector body; When the locking groove and the anti-reverse block are aligned and assembled, the pre-installed part can be inserted into the assembly hole and compress the elastic member, so that the elastic member pushes the pre-installed part to have a tendency to move towards the head of the connector body and abut against the anti-reverse block; when the pre-installed part compresses the elastic member, the anti-reverse block extends into the locking groove past the pre-installed part; when the locking groove and the anti-reverse block are misaligned and assembled, the circumferential sidewall of the pre-installed part abuts against the opening edge of the assembly hole to limit the depth of the pre-installed part inserted into the assembly hole.

2. The pre-installed fiber optic connector according to claim 1, characterized in that, The assembly hole has two opposing clearance grooves on its wall. Each clearance groove contains an elastic arm that extends axially along the assembly hole. Each of the two elastic arms has a backstop block on its opposite side.

3. The pre-installed fiber optic connector according to claim 2, characterized in that, The elastic arm, anti-reverse block, and connector body are integrally formed.

4. The pre-installed fiber optic connector according to claim 1, characterized in that, The anti-reverse block has a first guide slope on the side opposite to the elastic component. The first guide slope is used to guide the pre-installed part to pass over the anti-reverse block and insert into the assembly hole to compress the elastic component.

5. The pre-installed fiber optic connector according to claim 4, characterized in that, The pre-assembly section is provided with a second guide slope corresponding to the position of the first guide slope.

6. The pre-installed fiber optic connector according to claim 1, characterized in that, The head of the connector body is recessed with at least one guide groove, which connects to the assembly hole and extends along the axial direction of the assembly hole; the circumferential sidewall of the pre-assembly part is provided with a slider corresponding to the position of the guide groove.

7. The pre-installed fiber optic connector according to claim 1, characterized in that, The pre-installed part has a protruding ring at its tail end, and the pre-embedded optical fiber passes through the protruding ring at least partially outside the protruding ring. A heat shrink tubing is fitted on the protruding ring.

8. The pre-installed fiber optic connector according to claim 1, characterized in that, The end of the insert core facing away from the pre-installed part is fitted with a tail plug for holding.

9. The pre-assembled fiber optic connector according to claim 1, characterized in that, The elastic component is a spring.

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