CN103901552B - The joints of optical fibre - Google Patents

Abstract

An optical fiber connector for connecting a plurality of optical fibers, comprising a mounting part and a pressing part, a plurality of lens parts corresponding to the optical fibers are formed on the mounting part, and a lens part corresponding to the pressing part is provided in the mounting part The first installation slot. A plurality of positioning grooves corresponding to the optical fiber and the lens portion are opened on the bottom surface of the first installation groove, the pressing portion includes a pressing surface, the pressing portion is fixedly arranged in the first installation groove and the pressing The surface is press-fitted on the bottom surface of the first installation groove. The ends of the optical fibers are respectively arranged in the corresponding positioning grooves and optically aligned with the corresponding lens parts. Each positioning groove includes two opposite side support walls and a bottom support wall, and the side support walls, the bottom support wall and the pressing surface abut against the peripheral side of the corresponding optical fiber to position the optical fiber.

Description

The optical fiber connector

technical field

The invention relates to a connector, in particular to an optical fiber connector.

Background technique

Optical fiber connectors are used to realize optical coupling between optical fibers, between an optical signal transmitting device and an optical fiber, or between an optical fiber and an optical signal receiving device. Existing optical fiber connectors generally use circular holes to cooperate with optical fibers. Specifically, the end of the optical fiber is inserted into the circular hole and fixed in the through hole by dispensing. At the same time, when assembling , it is necessary to ensure the matching accuracy of the optical fiber and the circular hole.

However, the round hole is difficult to manufacture and process, and it is difficult to ensure the roundness of the round hole. Therefore, during assembly, the assembly accuracy of the optical fiber is likely to be reduced due to the influence of the roundness of the round hole. Furthermore, when fixing the optical fiber, the round hole brings difficulties to work such as optical fiber dispensing.

Contents of the invention

In view of this, it is necessary to provide an optical fiber connector that is easy to assemble and can ensure assembly accuracy.

A fiber optic connector used to connect multiple optical fibers. The fiber optic connector includes a mounting portion and a pressing portion, on which a plurality of lens portions corresponding to the optical fibers are formed, and a first mounting portion corresponding to the pressing portion is provided in the mounting portion groove. The bottom surface of the first installation groove is provided with a plurality of positioning grooves corresponding to the optical fiber and the lens part, the pressing part includes a pressing surface, and the pressing part is fixedly arranged on the first installation and the pressing surface is pressed on the bottom surface of the first installation groove. The ends of the optical fibers are respectively arranged in the corresponding positioning grooves and optically aligned with the corresponding lens parts. Each of the positioning grooves includes two opposite side support walls and a bottom support wall, and the side support walls, the bottom support wall and the pressing surface abut against the peripheral side of the corresponding optical fiber for positioning the optical fiber.

Compared with the prior art, the positioning groove of the optical fiber connector adopts a polygonal cross section, so it is relatively simple to manufacture, and it is easier to ensure the shape accuracy of the positioning groove. In addition, the positioning groove cooperates with the pressing The part supports the optical fiber in four directions, which can improve the positioning stability of the optical fiber.

Description of drawings

Fig. 1 is an exploded view of an optical fiber connector according to an embodiment of the present invention.

FIG. 2 is a partially enlarged view of the optical fiber connector of FIG. 1 .

FIG. 3 is another perspective view of the mounting portion of the fiber optic connector of FIG. 1 .

FIG. 4 is a perspective view of the fiber optic connector in FIG. 1 after assembly.

Fig. 5 is a partial sectional view along V-V of the optical fiber connector of Fig. 4 .

Description of main component symbols

The optical fiber connector 100 Installation department 10 Positioning department 11 first surface 111 second surface 112 Lens Department 112a Socket 112b first slot 113 bottom surface 114 Locating slot 115 side support wall 115a bottom support wall 115b the ribs 115c Chamfer 115d extension 12 Second installation slot 121 storage tank 122 Lamination 20 Compression end twenty one Pressing surface 211 fixed end twenty two optical fiber 200 Core 201 The protective layer 202

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

1 to 3 , the optical fiber connector 100 in the embodiment of the present invention includes a mounting portion 10 and a crimping portion 20 .

The installation part 10 includes a positioning part 11 and an extension part 12 connected with the positioning part 11 . The positioning portion 11 includes a first surface 111 and a second surface 112 . A first installation groove 113 is opened on the first surface 111. In this embodiment, the first installation groove 113 is roughly square. Of course, the first installation groove 113 can also be in other suitable shapes, such as trapezoid, parallelogram, etc. The first mounting groove 113 has a bottom surface 114, and a plurality of positioning grooves 115 are defined on the bottom surface 114, and the positioning grooves 115 extend along directions parallel to each other, and the extending direction of the positioning grooves 115 is roughly the same as that of the first mounting groove 115. The two surfaces 112 are vertical. The cross-sectional shape of each of the positioning grooves 115 is polygonal. In this embodiment, each of the positioning grooves 115 includes two opposite side support walls 115a and a bottom support wall 115b. The side support walls 115a Connected to the bottom surface 114 and substantially perpendicular to the bottom surface 114 , the bottom support wall 115 b is substantially parallel to the bottom surface 114 . A rib 115c is formed between each side support wall 115a and the bottom support wall 115b, and the surface of the rib 115c is plane. In addition, a chamfer 115d is formed at the junction of each side support wall 115a and the bottom surface 114 .

A plurality of lens portions 112a are formed on the second surface 112 corresponding to the positioning grooves 115, and the lens portions 112a are used to converge light. In this embodiment, the lens portions 112a are aspheric convex lenses. Two insertion holes 112b are also opened on the second surface 112 for insertion and mating with a matching connector (not shown in the figure). In this embodiment, the insertion holes 112b are respectively formed on both sides of the lens portion 112a along the arrangement direction of the lens portions 112a. Of course, the insertion hole 112b is replaced by a protruding insertion column, and an insertion hole is provided on a matching connector.

The extension portion 12 extends a certain distance away from the second surface 112 of the positioning portion 11 , and in this embodiment, the extension portion 12 is integrally formed with the positioning portion 11 . The extension portion 12 defines a second installation groove 121 communicating with the first installation groove 113 , and the second installation groove 121 runs through a side surface of the extension portion 12 away from the positioning portion 11 . Along the direction parallel to the alignment direction of the positioning grooves 115 , the size of the second mounting groove 121 is smaller than that of the second mounting groove 121 . A plurality of receiving grooves 122 corresponding to the positioning grooves 115 are defined on the bottom surface of the second mounting groove 121 . The cross-sectional shape of the receiving groove 122 corresponds to the cross-sectional shape of the positioning groove 115 , and the cross-sectional dimension of the receiving groove 122 is larger than that of the positioning groove 115 .

The mounting part 10 is made by injection molding. Since the positioning groove 115 adopts a polygonal cross section, the molding mold of the mounting part 10 is relatively simple to manufacture, and it is easier to ensure the shape accuracy of the positioning groove 115 . The design of the rib 115c can increase the structural stability of the positioning groove 115 when it is formed, and reduce the amount of distortion and deformation of the molding material around the positioning groove 115 when it is cooled. In addition, the chamfer 115d can avoid the Stress concentration is formed at the junction of the side support wall 115 a and the bottom surface 114 , which is beneficial to maintaining the molding quality of the installation part 10 . The shape of the pressing portion 20 corresponds to the first installation groove 113 . The pressing portion 20 includes a pressing end 21 and a fixing end 22 away from the pressing end 21 . The size of the pressing portion 20 gradually increases from the pressing end 21 to the fixing end 22 . The pressing end 21 forms a pressing surface 211 matched with the bottom surface 114 of the first installation groove 113 . The pressing surface 211 is smaller than the bottom surface but can cover all the positioning grooves 115 . The size of the fixed end 22 is equivalent to the size of the opening formed by the first mounting groove 113 on the first surface 111, so that the fixed end 22 can be disposed in the first mounting groove 113 in an interference fit manner. .

The optical fiber connector 100 is used to connect multiple optical fibers 200 , and each positioning groove 115 corresponds to one optical fiber 200 . Each of the optical fibers 200 includes a core 201 and a protective layer 202 covering the core 201, the core 201 is used to transmit optical signals, and the protective layer 202 is used to protect the core 201 from damage . One end of each optical fiber 200 connected to the optical fiber connector 100 exposes a certain length of core 201 .

Please refer to FIGS. 4 to 5 together. During assembly, each of the optical fibers 200 is placed in the corresponding positioning groove 115 and the receiving groove 122, specifically, the exposed core 201 of each of the optical fibers 200 is set In the corresponding positioning groove 115, the protective layer 202 is arranged in the corresponding receiving groove 122, the core 201 is supported on the side supporting wall 115a and the bottom supporting wall 115b, and the core The part 201 can be fixed in the corresponding positioning groove 115 by dispensing. Since the positioning groove 115 adopts an open groove structure above, it can facilitate the dispensing and fixing of the optical fiber 200, and it is convenient to adjust the optical fiber 200 during the installation process. The relative position of the optical fiber 200 and the corresponding lens part 112a is used to determine the assembly accuracy. After the optical fiber 200 is installed, the pressing portion 20 is set in the first installation groove 113 , and the pressing surface 211 of the pressing end 21 is pressed on the bottom surface 114 of the first installation groove 113 And the top of the core 201 of the optical fiber 200 in each positioning groove 115 is press-fitted. The fixing end 22 is interference-fitted in the first installation groove 113 , so that the pressing part 20 is fixed in the first installation groove 113 .

In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should be included within the scope of protection claimed by the present invention.

Claims (7)

1. An optical fiber connector for connecting a plurality of optical fibers, the optical fiber connector includes a mounting portion and a pressing portion, a plurality of lens portions corresponding to the optical fibers are formed on the mounting portion, the mounting portion A first installation groove corresponding to the press-fit part is opened on the part, and a plurality of positioning grooves corresponding to the optical fiber and the lens part are opened on the bottom surface of the first installation groove, and the press-fit part includes a A pressing surface, the pressing part is fixedly arranged in the first installation groove, the pressing surface is pressed on the bottom surface of the first installation groove, and the ends of the optical fibers are respectively arranged in the corresponding positioning grooves Inside and optically aligned with the corresponding lens part, it is characterized in that: each of the optical fibers includes a core and a protective layer covering the core, and each of the positioning grooves includes two opposite side support walls And a bottom support wall, the side support wall, the bottom support wall and the pressing surface abut against the peripheral side of the corresponding optical fiber to position the optical fiber, each of the side support walls is in contact with the bottom A rib is formed between the supporting walls, the rib intersects and connects with the side support arm, and the rib intersects with the side support arm to form a straight line, the core of the optical fiber and the The side support arms, the bottom support arms and the ribs are all in contact. 2. The optical fiber connector according to claim 1, wherein the installation part comprises a positioning part and an extension part connected with the positioning part, the first installation groove is opened in the installation part, The optical fiber passes through the extension part and is disposed in the corresponding positioning groove. 3. The optical fiber connector according to claim 2, characterized in that: the extension part is provided with a second installation groove communicating with the first installation part, and the bottom surface of the second installation groove is provided with multiple There are two accommodating slots corresponding to the positioning slots, and the optical fibers respectively pass through the corresponding accommodating slots and are arranged in the corresponding positioning slots. 4. The optical fiber connector according to claim 1, wherein the surface of the rib is flat. 5. The optical fiber connector according to claim 1, wherein a chamfer is formed at the junction of each of the side supporting walls and the bottom surface of the first installation groove. 6. The optical fiber connector according to claim 1, wherein the press-fit part comprises a press-fit end and a fixed end away from the press-fit end, and the size of the press-fit part is from the The pressing end gradually increases to the fixed end, and the pressing surface is the end surface of the pressing end. 7 . The optical fiber connector according to claim 6 , wherein the press-fit portion is fixedly disposed in the first installation groove by an interference fit between the fixed end and the first installation groove. 8 .