An ultra-low-loss multi-core optical cable assembly

Abstract

The utility model relates to the technical field of optical fiber connectors, and discloses an ultra-low loss multi-core connecting optical cable assembly. It includes a first ferrule, a second ferrule and a sleeve; the first ferrule and the second ferrule both include a first end face and a second end face, the first end face is provided with an optical fiber hole, the optical fiber hole runs from the first end face to the second end face, and first inclined surfaces are provided on both sides of the ferrule, and the first inclined surface extends from the side of the ferrule to the first end face; the sleeve includes a plurality of side walls, the plurality of side walls enclose a docking cavity and two openings connected to the docking cavity, and a second inclined surface is provided at the opening of the sleeve, and the second inclined surface is adapted to the first inclined surface; the sleeve is sleeved on the first ferrule and the second ferrule, and the first end face of the first ferrule and the first end face of the second ferrule are arranged opposite to each other. The utility model achieves the following technical effects: improving docking accuracy and preventing offset.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical fiber connectors, and in particular relates to an ultra-low-loss multi-core connection optical cable assembly. Background Art

[0002] MPO connectors are designed for handling multiple optical fibers at the same time and are mainly used in data centers, enterprise networks, telecommunications equipment, and other scenarios that require high-density optical fiber connections. The design feature of MPO connectors is the use of MT (Mechanical Transfer) ferrule technology, which allows multiple optical fibers to be aligned and connected in one operation.

[0003] Currently, during the use of the ferrules, the two ferrules need to be docked. The existing docking method adopts a direct docking method, that is, the heads of the two ferrules are simply fitted together. This method has low docking accuracy and is prone to errors, which affects the subsequent use effect. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides an ultra-low-loss multi-core connecting optical cable assembly and optical fiber.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] In a first aspect, an ultra-low loss multi-core connection optical cable assembly is provided, comprising a first ferrule, a second ferrule and a sleeve;

[0007] The first ferrule and the second ferrule both include a first end face and a second end face, the first end face is provided with a fiber hole, the fiber hole runs from the first end face to the second end face, and first inclined surfaces are provided on both sides of the ferrule, the first inclined surfaces extend from the side face of the ferrule to the first end face;

[0008] The sleeve includes a plurality of side walls, which enclose a docking cavity and two openings connected to the docking cavity. A second inclined surface is provided at the opening of the sleeve, and the second inclined surface is adapted to the first inclined surface.

[0009] The sleeve is sleeved on the first ferrule and the second ferrule, and the first end surface of the first ferrule and the first end surface of the second ferrule are arranged opposite to each other.

[0010] In some embodiments, a clamping block is provided on the side wall of the docking cavity of the sleeve, and a clamping groove is provided on the outer side of the first ferrule and the second ferrule, and the clamping block is clamped with the clamping groove.

[0011] In some embodiments, a positioning portion for positioning the insertion distance of the first ferrule and the second ferrule is further provided on the side wall of the docking cavity.

[0012] In some embodiments, the cross section of the positioning portion is triangular, and the slope of the hypotenuse of the positioning portion that contacts the first ferrule and the second ferrule respectively matches the first slope.

[0013] In some embodiments, one side of the sleeve has two ends formed by enclosure, and a crack is formed between the two ends.

[0014] In some embodiments, the first inclined surface extends to the long side of the first end surface.

[0015] In some embodiments, the width of the first end surface is 0.3-0.7 mm.

[0016] In some embodiments, glue injection windows capable of injecting glue into the optical fiber hole are further provided on the side surfaces of the first ferrule and the second ferrule.

[0017] In some embodiments, the distance between the glue injection window and the first end surface is greater than the distance between the first end surface and the end of the sleeve.

[0018] In some embodiments, a positioning hole is further provided on the first end surface of the first ferrule and the second ferrule, and the positioning hole passes through from the first end surface to the second end surface.

[0019] In summary, the utility model has the following benefits:

[0020] By providing a sleeve, the first ferrule and the second ferrule can be docked in the docking cavity in the sleeve, so that the first end faces of the first ferrule and the second ferrule fit together, reducing the docking angle and improving the docking accuracy. A first bevel is provided on both the first ferrule and the second ferrule, and a second bevel corresponding to the first bevel is provided in the sleeve. When docking, the first bevel is fitted with the second bevel, and the second bevel is used for guidance, so that the first ferrule and the second ferrule can enter the docking cavity more easily, reducing the loss during the docking process. At the same time, the sleeve can also fix the first ferrule and the second ferrule to prevent them from being offset during subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an ultra-low-loss multi-core optical cable assembly in an embodiment of the present application.

[0022] Figure 2 It is a schematic diagram of the structure of the first ferrule or the second ferrule in the embodiment of the present application.

[0023] Figure 3 It is a schematic diagram of the structure of the sleeve in the embodiment of the present application.

[0024] Figure 44 is a top view of an ultra-low-loss multi-core connecting optical cable assembly in an embodiment of the present application.

[0025] Figure 5 It is a cross-sectional view at AA in the embodiment of the present application.

[0026] Figure 6 It is a front view of the first ferrule or the second ferrule in the embodiment of the present application.

[0027] Markings in the figure:

[0028] 10. first ferrule; 20. second ferrule;

[0029] 30. Sleeve; 31. Docking cavity; 32. Second inclined surface; 33. Block; 34. Positioning portion; 35. Crack;

[0030] 1. First end face; 2. Second end face; 3. Optical fiber hole; 4. First inclined surface; 5. Card slot; 6. Glue injection window. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. The described embodiment is a contact part embodiment of the utility model, not all embodiments.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] Please see attached Figure 1-3 The present embodiment provides an ultra-low loss multi-core connecting optical cable assembly, including a first ferrule 10, a second ferrule 20 and a sleeve 30; the first ferrule 10 and the second ferrule 20 both include a first end face 1 and a second end face 2, the first end face 1 is provided with a fiber hole 3, the fiber hole 3 extends from the first end face 1 to the second end face 2, the first ferrule 10 and the second ferrule 20 are provided with a first inclined surface 4 on both sides, and the first inclined surface 4 extends from the side of the ferrule to the first end face 1; the sleeve 30 includes a plurality of side walls, the plurality of side walls enclose a docking cavity 31 and two openings connected to the docking cavity 31, and a second inclined surface 32 is provided at the opening of the sleeve 30, and the second inclined surface 32 is adapted to the first inclined surface 4.

[0035] The first ferrule 10 and the second ferrule 20 have similar structures. This embodiment takes the first ferrule 10 as an example. The first ferrule 10 is block-shaped. The first ferrule 10 has a first end face 1 and a second end face 2 at both ends. The first end face 1 is located at the top, and the second end face 2 is located at the bottom. The first end face 1 is provided with a plurality of fiber holes 3. This embodiment does not specifically limit the number of fiber holes 3. The fiber holes 3 extend from the first end face 1 to the second end face 2 to form a through hole. The optical fiber passes through the fiber holes 3 when in use. The first end face 1 of the first ferrule 10 is provided with a chamfer to form a first inclined surface 4, and the first inclined surface 4 is located between the side wall and the first end face 1. The first core 10 may be chamfered on one side, or on two sides or four sides. A docking cavity 31 for docking the first core 10 and the second core 20 is provided in the sleeve 30. The side wall end of the docking cavity 31 at the opening of the sleeve 30 is chamfered to form a second inclined surface 32. The first inclined surface 4 is adapted to the second inclined surface 32. The number of the second inclined surfaces 32 corresponds to the first inclined surface 4, which plays a guiding role and can make it easier for the first core 10 and the second core 20 to enter the docking cavity 31. When in use, the first inclined surface 4 on the first core 10 is corresponded to the second inclined surface 32, and it is pushed into the docking cavity 31. The first inclined surface 4 on the second core 20 corresponds to the second inclined surface 32, and the second core 20 is pushed into the docking cavity 31 to achieve docking of the first core 10 and the second core 20.

[0036] By providing a sleeve 30, this embodiment enables the first ferrule 10 and the second ferrule 20 to be docked in the docking cavity 31 in the sleeve 30, so that the first end faces 1 of the first ferrule 10 and the second ferrule 20 fit together, thereby improving the docking accuracy. The first bevel 4 is provided on both the first ferrule 10 and the second ferrule 20, and the sleeve 30 is provided with a second bevel 32 corresponding to the first bevel 4. When docking, the first bevel 4 is fitted with the second bevel 32, and the second bevel 32 is used for guidance, so that the first ferrule 10 and the second ferrule 20 can enter the docking cavity 31 more easily, thereby reducing the loss during the docking process. At the same time, the sleeve 30 can also fix the first ferrule 10 and the second ferrule 20 to prevent them from being offset in subsequent use.

[0037] Example 2

[0038] The difference between Example 2 and Example 1 is that this example further optimizes the ultra-low loss multi-core connection optical cable assembly. Figure 4-6As shown, a block 33 is provided on the side wall of the docking cavity 31 of the sleeve 30, and a slot 5 is provided on the outer side of the first ferrule 10 and the second ferrule 20, and the block 33 is engaged with the slot 5. The block 33 can be arranged on the upper side, lower side, left side or right side of the docking cavity 31, which is not limited in this embodiment. The block 33 is arranged at the opening close to the sleeve 30, and the first ferrule 10 and the second ferrule 20 are both provided with a slot 5, which is arranged on the side wall of the first ferrule 10 and the second ferrule 20, and is arranged on a side close to the first inclined surface 4. By setting the block 33, the first ferrule 10 and the second ferrule 20 can be fixed by being engaged, so as to prevent the first ferrule 10 and the second ferrule 20 from being offset during subsequent use. It can be understood that multiple blocks 33 can also be provided to improve the stability of the device.

[0039] Preferably, the clamping block 33 is arranged on the upper side of the docking cavity 31 of the sleeve 30. Since a positioning groove is usually provided on the side where the first core 10 contacts the long side of the first end face 1, at this time, a clamping block 33 is provided on the side wall of the docking cavity 31 of the sleeve 30, so that the positioning groove and the clamping block 33 can be clamped together, eliminating the trouble of reopening and improving production efficiency.

[0040] In some embodiments, the docking cavity 31 is further provided with a positioning portion 34 for positioning the insertion distance of the first ferrule 10 and the second ferrule 20. The positioning portion 34 can play a positioning role for the first ferrule 10 and the second ferrule 20, ensuring that the first ferrule 10 and the second ferrule 20 extend into the docking cavity 31 at the same distance, making the docking process more accurate. The positioning portion 34 can be a limit block, which is arranged in the middle of the docking cavity 31. When the first ferrule 10 and the second ferrule 20 are pushed into the docking cavity 31, the limit block can limit the push-in distance of the first ferrule 10 and the second ferrule 20, thereby improving the docking accuracy.

[0041] In some embodiments, the cross section of the positioning portion 34 is triangular, and the slope of the hypotenuse of the positioning portion 34 contacting the first ferrule 10 and the second ferrule 20 is adapted to the first inclined surface 4. Preferably, there are two positioning portions 34, the two positioning portions 34 are arranged opposite to each other, the positioning portion 34 is a triangular prism, the cross section of the positioning portion 34 is an isosceles triangle shape, and the bottom side of the positioning portion 34 is connected to the side wall of the docking cavity 31. During use, after the first ferrule 10 and the second ferrule 20 are pushed in, the first inclined surface 4 of the first ferrule 10 and the second ferrule 20 is adapted to the triangular inclined surface of the positioning portion 34 to position them, and at the same time, the distance between the vertex angles of the two positioning portions 34 is equal to the width of the first end face 1. By setting the positioning portion 34, the positioning of the first ferrule 10 and the second ferrule 20 can be more accurately achieved. At the same time, the positioning portion 34 is completely stuck in the gap between the first inclined surfaces 4 of the first ferrule 10 and the second ferrule 20, thereby improving the stability of the product.

[0042] In some embodiments, one side of the sleeve 30 has two ends formed by enclosure, and a crack 35 is formed between the two ends. Specifically, the sleeve 30 is semi-closed so that it can rebound within a certain range, making it easier to dock the first ferrule 10 and the second ferrule 20. The sleeve 30 can be made of plastic injection molding, metal and other materials, and its size is micrometers and sizes, so that the optical fiber docking end face is more accurate and can reduce losses.

[0043] In some embodiments, the first bevel 4 extends to the long side of the first end face 1. By providing the first bevel 4 at the long side of the first end face 1, the contact area with the second bevel 32 during docking can be increased, making it easier to enter the docking cavity 31.

[0044] The width of the first end face 1 can be changed by setting the inclination angle of the first bevel 4, and the width of the first end face 1 is 0.3-0.7 mm, preferably 0.5 mm. The first bevel 4 is provided on both sides, so that the first ferrule 10 and the second ferrule 20 are in a "V" shape. The V-shaped ferrule has a smaller contact area with the grinding sheet during grinding, less dust is generated during the grinding process, and the grinding efficiency can be improved, so that the grinding time is reduced, saving time.

[0045] After the first ferrule 10 and the second ferrule 20 are docked, the contact area of ​​the first end face 1 is small, so that the surface of the first end face 1 is not easily scratched during physical docking, and the docking collision rate is low. In addition, due to its small docking contact area, compared with similar products, it generates greater pressure and has a smaller insertion loss, which can greatly improve the optical performance and usage stability and reduce losses.

[0046] In some embodiments, the side surfaces of the first ferrule 10 and the second ferrule 20 are also provided with a glue injection window for injecting glue into the optical fiber hole 3. The glue injection window is used to inject glue into the optical fiber to fix the optical fiber.

[0047] In some embodiments, the distance between the injection window and the first end face 1 is greater than the distance between the first end face 1 and the end of the sleeve 30. At this time, when the first ferrule 10 and the second ferrule 20 are connected, the injection window can be outside the sleeve 30, which is convenient for injecting glue into the optical fiber.

[0048] In some embodiments, a positioning hole is further provided on the first end face 1 of the first ferrule 10 and the second ferrule 20, and the positioning hole runs through the first end face 1 to the second end face 2. There are multiple positioning holes, and illustratively, there are two positioning holes, which are respectively provided on both sides of the optical fiber hole 3 and pass through the first end face 1 and the second end face 2. It can also include a positioning pin, and the positioning pin is passed through the positioning hole for positioning, so that the docking process is more accurate. The positioning hole is provided with a chamfer, which is also convenient for the insertion of the ferrule and improves the efficiency of positioning.

[0049] Example 3

[0050] This embodiment provides an optical cable, including an optical fiber and an ultra-low loss multi-core connecting optical cable assembly, wherein the optical fiber passes through the optical fiber hole 3 of the first ferrule 10 and the second ferrule 20, and the sleeve 30 is sleeved on the first ferrule 10 and the second ferrule 20. The first end face 1 of the first ferrule 10 is guided into one opening of the sleeve 30 through the first inclined surface 4, and the first end face 1 of the second ferrule 20 is guided into the other opening of the sleeve 30 through the first inclined surface 4, so that the second end faces 2 of the first ferrule 10 and the second ferrule 20 are opposite to each other, the optical fiber hole 3 is positioned, and the optical fiber passes through the optical fiber hole 3.

[0051] The optical cable of this embodiment can set the number of optical fiber holes according to actual conditions, and is suitable for high-density optical connection scenarios such as data centers and enterprise networks. In addition, due to the provision of a sleeve, the first ferrule and the second ferrule can be quickly positioned with high positioning accuracy, thereby improving the data transmission effect and service life of the cable.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between 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.

[0053] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0054] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0055] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. An ultra-low loss multi-core optical cable assembly, characterized in that: It includes a first ferrule, a second ferrule and a sleeve; The first ferrule and the second ferrule each include a first end face and a second end face, the first end face is provided with an optical fiber hole, the optical fiber hole extends from the first end face to the second end face, and the first ferrule and the second ferrule are respectively provided with first inclined surfaces on both sides, the first inclined surfaces extend from the side faces of the ferrule to the first end face; The sleeve includes a plurality of side walls, which enclose a docking cavity and two openings connected to the docking cavity. A second inclined surface is provided at the opening of the sleeve, and the second inclined surface is adapted to the first inclined surface. The sleeve is sleeved on the first ferrule and the second ferrule, and the first end surface of the first ferrule and the first end surface of the second ferrule are arranged opposite to each other.

2. The ultra-low loss multi-core connection optical cable assembly according to claim 1, characterized in that: A clamping block is arranged on the side wall of the sleeve docking cavity, and a clamping groove is arranged on the outer side of the first ferrule and the second ferrule, and the clamping block is clamped with the clamping groove.

3. The ultra-low loss multi-core connection optical cable assembly according to claim 1, characterized in that: A positioning portion for positioning the insertion distance between the first ferrule and the second ferrule is also provided on the side wall of the docking cavity.

4. The ultra-low loss multi-core connection optical cable assembly according to claim 3, characterized in that: The cross section of the positioning portion is triangular, and the slopes of the hypotenuses of the positioning portion that are in contact with the first ferrule and the second ferrule respectively match the first inclined surface.

5. The ultra-low loss multi-core connection optical cable assembly according to claim 1, characterized in that: One side of the sleeve has two ends formed by enclosure, and a crack is formed between the two ends.

6. The ultra-low loss multi-core connection optical cable assembly according to claim 1, characterized in that: The first inclined surface extends to the long side of the first end surface.

7. The ultra-low loss multi-core connection optical cable assembly according to claim 1, characterized in that: The width of the first end surface is 0.3-0.7 mm.

8. The ultra-low loss multi-core connection optical cable assembly according to claim 1, characterized in that: Glue injection windows capable of injecting glue into the optical fiber hole are also provided on the side surfaces of the first ferrule and the second ferrule.

9. The ultra-low loss multi-core connection optical cable assembly according to claim 8, characterized in that: The distance between the glue injection window and the first end surface is greater than the distance between the first end surface and the end of the sleeve.

10. The ultra-low loss multi-core connection optical cable assembly according to claim 1, characterized in that: A positioning hole is also provided on the first end surface of the first ferrule and the second ferrule, and the positioning hole passes through from the first end surface to the second end surface.

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