WO2015032024A1

WO2015032024A1 - Split type optical fiber centering structure

Info

Publication number: WO2015032024A1
Application number: PCT/CN2013/082855
Authority: WO
Inventors: 王七月; 陈新军; 衷诚
Original assignee: 深圳日海通讯技术股份有限公司
Priority date: 2013-09-03
Filing date: 2013-09-03
Publication date: 2015-03-12

Abstract

A split type optical fiber centering structure comprises a tail handle (1) provided with a groove portion (113). The groove portion (113) is provided with a detachable connecting optical fiber centering member (6). The optical fiber centering member (6) is provided with an optical fiber guiding groove (61). The outside of the optical fiber centering member (6) is provided with a cover board (2). The outside of the tail handle (1) and the outside of the cover board (2) clamp a spring sheet (3). The split type optical fiber centering structure is easy to manufacture, and the manufacturing precision can be ensured with a good stability.

Description

Split type fiber centering structure

The utility model belongs to a fiber fixed connection technology in the field of communication, and relates to a fiber optic mechanical connection device, in particular to a split type fiber centering structure. Background technique

With the development of network technology, fiber optic connectors have become increasingly popular as a high-speed, broadband data communication connector. There are two kinds of existing optical fiber connectors. One is that the fixed-gap method is used to fix the optical fiber and the optical fiber connector; the other is the fiber-optic connector installed on site by the maintenance personnel. The optical fiber is mechanically connected and has a mechanical mechanism for centering the card. The device is provided with a slot for placing the optical fiber, and the optical fiber and the pre-embedded fiber are aligned in the slot and then fixed. For centering installation, when it is necessary to replace the fiber, a special tool needs to be inserted into the traditional field-installed fiber connector to open the carding device to remove the fiber. However, since the diameter of the bare fiber is very small, the alignment of the fiber and the fiber is difficult, so that the device for the centering of the card has a very high processing precision, and the structure which is too complicated will be difficult to ensure the precision after processing. Therefore, the stability of the mechanical connection performance of the optical fiber cannot be ensured; at the same time, the processing difficulty is increased and the processing cost is increased. Utility model content

The object of the present invention is to propose a split type fiber centering structure which is easy to process and can ensure processing accuracy and stability.

To achieve this, the utility model adopts the following technical solutions:

A split type fiber centering structure includes a tail shank, and the shank is provided with a groove portion, a detachably connected fiber optic centering member is disposed in the groove portion, the fiber optic centering member is provided with a fiber guiding slot, and an outer side of the fiber optic centering member is provided with a cover plate, and the outer side of the tail shank is A shrapnel is disposed on the outer side of the cover.

Wherein, the cover surface of the cover plate cooperates with the optical fiber guiding slot to clamp the optical fiber placed in the optical fiber guiding slot.

Wherein the two ends of the groove portion are provided with a U-shaped boss, the back surface of the fiber pairing member is matched with the surface of the boss, and the two opposite sides of the fiber pairing member are respectively The two opposite sides of the boss are correspondingly engaged, and the fiber guiding groove is located on the front surface of the fiber centering member.

Wherein, the bottom of the groove portion is further provided with a second hole through which the fiber centering member is pushed on the back side of the fiber pairing member to remove the fiber centering member.

The tail handle includes a front section and a rear section coaxially connected to the front section, and the groove portion is located on the front section.

Wherein, one end of the front section is provided with a first hole coaxial with the front section, and the other end is provided with a third hole coaxial with the first hole, wherein the third hole is located in the groove part One end connected to the rear section and coaxially and in communication with the inner hole of the rear section; a ceramic ferrule coaxially disposed in the first hole, and a pre-embedded optical fiber extension in the ceramic ferrule Inserting into the optical fiber guiding slot, the outer optical fiber extends into the optical fiber guiding slot through the inner hole of the rear section and the third hole, and the embedded optical fiber is realized in the optical fiber guiding slot Connected in.

Wherein, the elastic piece has a u-shaped structure.

The fiber guide groove is a V-shaped groove, and the V-shaped groove has an angle of 45° to 75°.

Wherein, the V-shaped groove has an included angle of 60°.

Wherein, the tail handle and the fiber centering piece are made of the same material.

The utility model has the beneficial effects that: the split type optical fiber centering structure of the utility model passes A groove portion is arranged on the tail handle, a fiber centering piece is detachably connected in the groove portion, a fiber guide groove is arranged on the fiber centering piece, and a cover plate is arranged on the outer side of the fiber pairing piece, and the outer side of the tail handle is The outer side of the cover plate is provided with a spring piece, so that the fiber centering piece and the tail handle are two separate structures. During the processing, the fiber centering piece with the fiber guide groove can be finished to make the fiber guide. The groove satisfies high precision and stability, so as to facilitate the centering connection of the optical fiber, and the processing of the tail shank only requires high-precision machining at the intersection of the fiber centering piece and the tail shank, and does not need to perform all high-precision machining. The processing can also be more adapted to the existing processing level, making the processing easy, and ensuring the processing precision, and ensuring the stability of the fiber pairing device and the tail handle after assembly, thereby ensuring the stability of the fiber centering connection; At the same time, the elastic piece is clamped on the outer side of the tail shank and the cover plate. When the optical fiber is placed in the optical fiber guide groove, the optical fiber pushes the cover plate toward the one away from the optical fiber guide groove under the elastic action of the elastic piece. Movable to accommodate placement of the optical fiber, the optical fiber clamped by such a way that the optical fiber is placed more stable, more conducive to fiber alignment.

DRAWINGS

1 is a schematic view showing the overall structure of a split-type fiber centering structure of the present invention; FIG. 2 is a cross-sectional structural view of the split-type fiber centering structure of FIG.

3 is an exploded perspective view of the split-type fiber centering structure of FIG. 1;

4 is a schematic view showing the connection of the tail shank and the fiber centering member during the fiber alignment of the split type fiber centering structure of FIG. 1;

Figure 5 is a schematic exploded view of the tail shank and the fiber centering member of Figure 4;

Figure 6 is a schematic view of the tail handle structure of Figure 4;

Figure 7 is a schematic view 2 of the tail handle structure of Figure 4;

Figure 8 is a schematic view showing the structure of the cover plate of Figure 1.

In the figure: 1-tail shank; 2-cover; 3-shrap; 4-ceramic ferrule; 5-fiber; 6-fiber centering; 11-front section; 12-rear section; 111-first hole; 112-second hole; 113-groove portion; 114-land; 115-third hole; 21-cover surface; 61-fiber guide groove.

detailed description

The technical scheme of the present invention will be further described below in conjunction with the accompanying drawings and by way of specific embodiments.

As shown in FIG. 1 to FIG. 8 , a split type fiber centering structure includes a tail shank 1 , a shank 1 is provided with a groove portion 113 , and the groove portion 113 is provided with a detachably connected fiber centering member 6 . The optical fiber centering member 6 is provided with a fiber guide groove 61. The outer side of the fiber centering member 6 is provided with a cover plate 2, and the outer side of the tailstock 1 and the outer side of the cover plate 2 are sandwiched with the elastic piece 3. The split type fiber centering structure is provided with a groove portion 113 on the tail shank 1, and a detachably connected fiber centering member 6 is disposed in the groove portion 113. The fiber centering member 6 is provided with a fiber guiding groove 61. The outer side of the middle member 6 is provided with a cover plate 2, and the outer side of the tailstock 1 and the outer side of the cover plate 2 are sandwiched with elastic pieces 3, so that the fiber centering member 6 and the tailstock 1 are separated and two separate and simple The fiber centering piece 6 having the fiber guiding groove 61 can be finished during the processing, so that the fiber guiding groove 61 can satisfy the high precision and stability, so as to facilitate the centering connection of the fiber, and the tail The processing of the shank 1 only needs to be processed with high precision in the joint of the fiber centering piece 6 and the shank 1, and it is not necessary to perform all high-precision machining, and the processing can further adapt to the existing processing level, making the processing easy. Moreover, the processing precision can be ensured, and the stability of the fiber centering member 6 and the tail shank 1 after assembly can be ensured, thereby ensuring the stability of the fiber centering connection; meanwhile, the elastic piece 3 is clamped on the tail shank 1 and the cover plate 2 Outside When the centering fiber is placed in the fiber guiding slot 61 for centering, the optical fiber pushes the cover plate 2 to move slowly away from the side of the fiber guiding slot 61 by the elastic force of the elastic piece 3 to accommodate the placement of the optical fiber. By clamping the fiber in this way, the fiber placement is more stable, which is more conducive to fiber alignment.

Preferably, in the embodiment, the cover surface 21 of the cover plate 2 is correspondingly matched with the optical fiber guiding slot 61. The optical fiber placed in the fiber guide groove 61 is clamped, and the elastic piece 3 has a U-shaped structure. When the optical fiber is placed in the optical fiber guiding slot 61, the surface of the optical fiber is in contact with the cover surface 21, so that the cover 2 can always adjust the distance between the optical fiber and the cover 2 under the elastic force of the U-shaped elastic piece 3. In order to make the fiber placement more stable, the fiber is well aligned and a stable connection is achieved.

The stern 1 includes a front section 11 and a rear section 12 coaxially connected to the front section 11, and a groove portion 113 is located on the front section 11. Further, the U-shaped boss 114 is disposed at both ends of the groove portion 113, and the back surface of the fiber centering member 6 is matched with the surface of the boss 114, and the two opposite sides of the fiber centering member 6 and the boss are respectively The two opposite sides of the 114 are correspondingly mated, and the fiber guide 61 is located on the front side of the fiber centering member 6. Wherein, the U-shaped boss 114 is convex with respect to the groove portion 113, and relative to the outer circumference of the front segment 11, it can also be understood that the U-shaped boss 114 is still a groove for accommodating the supporting fiber alignment. Item 6. In this embodiment, the two opposite sides of the fiber centering member 6 refer to the faces of the fiber guiding groove 61 on the fiber centering member 6 having the same length direction. Similarly, the two opposite sides of the boss 114 refer to A surface that coincides with the groove length direction of the groove portion 113. As shown in the figure, the side surface on the upper surface of the fiber centering member 6 is matched with the side surface on the upper surface of the boss 114, and the side surface on the lower surface of the fiber centering member 6 is fitted to the side surface below the boss 114. Further, in the present embodiment, the tail shank 1 is a conventional part, and the surface on which the finishing is required is the surface of the boss 114 and the two sides, and since the area of the portion is small, it is more convenient and easier to process. To ensure the roughness or flatness or verticality of the plane, a stable and more accurate fit is formed when mating with the fiber centering member 6, which is advantageous for the centering connection of the fiber. For other parts of the tail shank 1, there is no need to process with too high processing requirements, which can save processing costs and reduce processing difficulty. In addition, the processing of the fiber centering member 6 can be separately processed according to the special precision. Since the structure of the fiber centering member 6 is simple, the performance of the fiber guiding groove 6 is more favorable; the processed tail shank 1 and the optical fiber are respectively aligned. When the component 6 is assembled and assembled, a high matching requirement can be realized, and the perfect coupling of the optical power is realized, so that The connector with such a split-type fiber centering structure has stable and reliable performance, and the loss is smaller than the existing products of the same type, and meets the requirements of the industry. Moreover, in the production of such connectors, core components, such as fiber optic centering members 6, can be recycled for reuse, saving manufacturing costs.

In this embodiment, one end of the front section 11 is provided with a first hole 111 coaxial with the front section 11 , and the other end is provided with a third hole 115 coaxial with the first hole 111 , wherein the third hole 115 is located at the groove portion 113 is connected to the rear end 12 and coaxially and coaxially with the inner hole of the rear section 12; the first hole 111 is coaxially disposed with a ceramic ferrule 4, and the embedded optical fiber in the ceramic ferrule 4 extends into the optical fiber. In the guiding slot 61, the optical fiber 5 of the external optical cable extends into the optical fiber guiding slot 61 through the hole inside the rear section 12 and the third hole 115, and realizes the centering connection with the embedded optical fiber in the optical fiber guiding slot 61. Among them, the ceramic ferrule 4 is a standard part that is matched with a standard adapter, and a pre-embedded optical fiber can be fixed therein by using a curing agent; and the exposed fiber end surface at the exposed end is generally ground and polished, which is more advantageous to the outside. The centering of the fiber 5 of the fiber optic cable.

Preferably, the fiber guiding groove 61 is a V-shaped groove, and the V-shaped groove has an angle of 45° to 75°. Further, in the present embodiment, the V-shaped groove has an included angle of 60°. The size of the V-shaped groove just ensures that the pre-embedded optical fiber in the ceramic ferrule 4 is centered with the optical fiber 5 of the external optical cable; and a guiding structure for guiding the optical fiber is disposed at both ends of the optical fiber guiding groove 6, the guiding structure is V The end of the groove is provided with a portion of the groove having a larger opening, where the fiber 5 of the external cable enters the fiber guide 61 from the rear section 12 of the tail shank 1, or when the embedded fiber in the ceramic ferrule 4 enters the fiber guide When the slot 6 is used, it can play a good guiding role, which is beneficial to the smooth penetration of the optical fiber, protects the end structure of the optical fiber, and realizes high-precision alignment of the pre-embedded optical fiber in the ceramic ferrule 4 and the optical fiber 5 of the external optical cable.

The split type fiber centering structure requires assembly of the fiber centering member 6 and the tail shank 1 and thus requires assembly or disassembly operations to be relatively simple and convenient. In this embodiment, a second hole 112 is disposed at the bottom of the groove portion 113, and the fiber centering member 6 is pushed on the back surface of the fiber centering member 6 through the second hole 112, To remove the fiber optic centering member 6. After the fiber centering member 6 and the tail shank 1 are separated into two separate parts, in use, the fiber centering member 6 is correspondingly assembled according to the above-mentioned mating portion, so that the fiber guiding groove 61 and the first hole 111, the third The holes 115 are coaxially disposed, which facilitates the alignment of the pre-embedded fibers in the ceramic ferrule 4 with the fibers 5 of the external optical cable; and when disassembling, only the back surface of the fiber centering member 6 needs to be pushed on the back of the tail shank 1 The fiber centering member 6 is pushed out of the groove portion 113 of the tail shank 1 to be disassembled. Not only is the assembly simple, no tooling is required, and the disassembly is convenient, which is more conducive to field operation.

In the present invention, the material of the tail shank 1 and the fiber centering member 6 is not limited to the same type; however, in order to make the purchase and processing more convenient, in the present embodiment, the tail shank 1 and the optical fiber centering member 6 are The structure made of the same material can save costs.

The split type fiber centering structure splits the integrated complex structure of the V-groove and the tail shank in the prior art into a plurality of separate parts, improves the performance stability of the V-groove portion, and realizes the perfect connection of the optical fiber. .

The technical principles of the present invention have been described above in connection with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present invention and are not to be construed as limiting the scope of the invention. Based on the explanation herein, those skilled in the art can devise various other embodiments of the present invention without departing from the scope of the present invention.

Claims

claims

1. A split optical fiber centering structure, including a tail handle (1), characterized in that: a groove portion (113) is provided on the tail handle (1), and a groove portion (113) is provided in the groove portion (113). Detachably connected optical fiber centering piece (6), the optical fiber centering piece (6) is provided with an optical fiber guide groove (61), and the outer side of the optical fiber centering piece (6) is provided with a cover plate (2), A spring piece (3) is provided between the outer side of the tail handle (1) and the outer side of the cover plate (2).

2. A split optical fiber centering structure according to claim 1, characterized in that: the cover surface (21) of the cover plate (2) matches the optical fiber guide groove (61) correspondingly to clamp the optical fiber guide groove (61). Tightly place the optical fiber in the optical fiber guide groove (61).

3. A split optical fiber centering structure according to claim 1, characterized in that: U-shaped bosses (114) are provided at both ends of the groove portion (113), and the optical fiber centering piece The back side of (6) matches the surface of the boss (114), and the two opposite sides of the optical fiber centering piece (6) match the two opposite sides of the boss (114) respectively. The optical fiber guide groove (61) is located on the front side of the optical fiber centering piece (6).

4. A split optical fiber centering structure according to claim 3, characterized in that: a second hole (112) is also provided at the bottom of the groove portion (113), and the second hole (112) passes through the second hole (112). ) Push the fiber optic centering piece (6) on the back side of the fiber optic centering piece (6) to remove the fiber optic centering piece (6).

5. A split optical fiber centering structure according to claim 3, characterized in that: the tail shank (1) includes a front section (11), and a rear section (11) coaxially connected to the front section (11) 12), the groove portion (113) is located on the front section (11).

6. A split optical fiber centering structure according to claim 5, characterized in that: one end of the front section (11) is provided with a first hole (111) coaxial with the front section (11), and the other is one end A third hole (115) coaxial with the first hole (111) is provided, wherein the third hole (115) is located between the groove portion (113) and the rear section (12). One end is coaxially and connected with the hole inside the rear section (12); a ceramic ferrule (4) is coaxially provided in the first hole (111), and a ceramic ferrule (4) is provided in the first hole (111). The pre-embedded optical fiber extends into the optical fiber guide groove (61), and the external optical fiber (5) extends into the optical fiber guide groove through the hole inside the rear section (12) and the third hole (115). (61), and the pre-embedded optical fiber is centrally connected in the optical fiber guide groove (61).

7. A split optical fiber centering structure according to claim 1, characterized in that: the elastic piece (3) has a U-shaped structure.

8. A split optical fiber centering structure according to claim 1, characterized in that: the optical fiber guide groove (61) is a V-shaped groove, and the included angle of the V-shaped groove is 45°~75°.

9. A split optical fiber centering structure according to claim 8, characterized in that: the included angle of the V-shaped groove is 60°.

10. A split optical fiber centering structure according to claim 1, characterized in that: the tail handle (1) and the optical fiber centering piece (6) are made of the same material.