CN106569303A - A Simple Structure Optical Fiber Connector - Google Patents

Abstract

The present invention belongs to the technical field of connectors, and in particular, relates to a simple structure optical fiber connector, characterized in that: it is composed of a first connector, a second connector, a third connector, a first optical cable and a second optical cable; the first connector is composed of a first tube body and a second tube body connected to the first tube body, the first tube body has a cable cavity inside, and the second tube body has a first fiber hole and a second fiber hole adjacent to each other inside; the connector in the present invention adopts a special material. The present invention has the following main beneficial technical effects: simple structure, easy to manufacture, high finished product qualification rate, wide temperature resistance range, low cost, and easy batch manufacturing.

Description

A Simple Structure Optical Fiber Connector

technical field

The invention belongs to the technical field of connectors, in particular to an optical fiber connector with a simple structure.

Background technique

In the field of control and measurement technology, the reflection of light is often used to accurately measure distance, levelness and angle. This kind of precise measurement can not only be applied in the field of military technology, but also widely used in industrial technology. In the prior art, the optical fiber connectors used cannot meet the requirements of the application, mainly in the following aspects: (1) The structure is complex, difficult to manufacture, and the cost is high; (2) It is easy to age, and cannot be connected under long-term humid and hot conditions. normal work.

Contents of the invention

In order to solve the above problems, the object of the present invention is to disclose a fiber optic connector with simple structure, which is realized by adopting the following technical solutions.

In the first implementation example of the present invention, a fiber optic connector with a simple structure is characterized in that it is composed of a first connecting body 1, a second connecting body 2, a third connecting body 3, a first optical cable 41 and a second optical cable 42; the first connecting body 1 is composed of a first pipe body 11 and a second pipe body 12 connected together with the first pipe body. The first pipe body 11 has a cable accommodation cavity 13 inside, and the second pipe body 12 has a first fiber-holding hole 14 and a second fiber-holding hole 15 close together inside, the first fiber-holding hole 14 is located in the center of the second tube body, and the first fiber-holding hole and the second fiber-holding hole are all through On the upper and lower surfaces of the second pipe body, the first fiber-holding hole and the second fiber-holding hole are all connected with the cable-holding cavity, the diameter of the cable-holding cavity is greater than the diameter of the first fiber-holding hole, and the diameter of the cable-holding cavity is greater than The diameter of the second fiber-holding hole, the first tube body and the second tube body have equal outer diameters, and the axes of the first tube body, the cable-holding cavity, the second tube body, and the first fiber-holding hole are coincident;

The second connecting body 2 is composed of a third pipe body 21 and a fourth pipe body 22 connected together with the third pipe body. The third pipe body 21 has a first optical cable cavity 24 inside, and the inside of the fourth pipe body 22 There is a third fiber-holding hole 23 next to each other. The third fiber-holding hole 23 is located in the center of the fourth tube body. The third fiber-holding hole runs through the upper and lower surfaces of the fourth tube body. The third fiber-holding hole It communicates with the first optical cable cavity, the diameter of the first optical cable cavity is larger than the diameter of the third fiber hole, the third tube body and the fourth tube body have the same outer diameter, the third tube body, the first optical cable cavity , the axes of the fourth tube body and the third fiber hole are coincident;

The third connecting body 3 is composed of a fifth pipe body 31 and a sixth pipe body 32 connected together with the fifth pipe body. The fifth pipe body 31 has a second optical cable cavity 34 inside. There is a fourth fiber-holding hole 33 next to each other, the fourth fiber-holding hole 33 is located in the center of the sixth tube body, the fourth fiber-holding hole is through the upper and lower surfaces of the sixth tube body, the fourth fiber-holding hole It communicates with the second optical cable cavity, the diameter of the second optical cable cavity is larger than the diameter of the fourth fiber cavity, the fifth tube body and the sixth tube body have the same outer diameter, the fifth tube body, the second optical cable cavity , the axes of the sixth tube body and the fourth fiber hole are coincident;

One end of the first optical cable 41 is located in the second fiber hole and the end surface of the end is in the same plane as the upper surface of the first connector, and the part of the first optical cable near one end is located in the cable cavity and fixed in the first tube On the inner wall of the body, the other end of the first optical cable 41 is located in the third fiber cavity and the end surface of the end is in the same plane as the lower surface of the second connecting body, and the part of the first optical cable near the other end is located in the first optical cable cavity. and fixed on the inner wall of the third pipe body by glue;

One end of the second optical cable 42 is located in the first fiber hole and the end surface of the end is in the same plane as the upper surface of the first connecting body, and the part of the second optical cable near one end is located in the cable cavity and fixed in the first tube On the inner wall of the body, the other end of the second optical cable 42 is located in the fourth fiber cavity and the end surface of this end is in the same plane as the lower surface of the third connecting body, and the part of the second optical cable near the other end is located in the second optical cable cavity. and fixed on the inner wall of the fifth pipe body by glue.

In the second implementation example of the present invention, a fiber optic connector with a simple structure is characterized in that it is composed of a first connecting body 1, a second connecting body 2, a third connecting body 3, a first optical cable 41 and a second optical cable 42; the first connecting body 1 is composed of a first pipe body 11 and a second pipe body connected together with the first pipe body. The first pipe body 11 has a cable accommodation chamber 13 inside, and the inside of the second pipe body It has the first fiber-holding hole and the second fiber-holding hole which are close together, the first fiber-holding hole is located in the center of the second tube body, the first fiber-holding hole and the second fiber-holding hole are all through the second tube body On the upper and lower surfaces, the first fiber-holding hole and the second fiber-holding hole are connected to the cable-holding cavity, the diameter of the cable-holding cavity is larger than the diameter of the first fiber-holding hole, and the diameter of the cable-holding cavity is larger than the second fiber-holding hole The diameter of the first pipe body and the second pipe body have the same outer diameter, and the axes of the first pipe body, the cable accommodation cavity, the second pipe body, and the first fiber accommodation hole are coincident;

The second connecting body 2 is composed of a third pipe body 21 and a fourth pipe body connected together with the third pipe body. The third pipe body 21 has a first optical cable cavity 24 inside, and the fourth pipe body has a tightening cavity inside the fourth pipe body. The third fiber-holding hole next to each other, the third fiber-holding hole is located in the center of the fourth tube body, the third fiber-holding hole runs through the upper and lower surfaces of the fourth tube body, the third fiber-holding hole and the first fiber-holding hole The optical cable cavity is connected, the diameter of the first optical cable cavity is greater than the diameter of the third fiber cavity, the third tube body and the fourth tube body have the same outer diameter, the third tube body, the first optical cable cavity, and the fourth tube The axes of the body and the third fiber hole are coincident;

The third connecting body 3 is composed of a fifth pipe body 31 and a sixth pipe body connected together with the fifth pipe body. The fifth pipe body 31 has a second optical cable cavity 34 inside, and the sixth pipe body has a tightening chamber inside the sixth pipe body. The fourth fiber-holding hole next to each other, the fourth fiber-holding hole is located in the center of the sixth tube body, the fourth fiber-holding hole runs through the upper and lower surfaces of the sixth tube body, the fourth fiber-holding hole and the second fiber-holding hole The optical cable cavity is connected, the diameter of the second optical cable cavity is greater than the diameter of the fourth fiber cavity, the fifth tube body and the sixth tube body have the same outer diameter, the fifth tube body, the second optical cable cavity, and the sixth tube The axes of the body and the fourth fiber hole are coincident;

The first optical cable 41 is composed of a first optical fiber located inside and a first optical cable sheath covering the first optical fiber. One end 411 of the first optical fiber in the first optical cable is located in the second fiber hole and the optical fiber at this end The end surface and the upper surface of the first connector are in the same plane, the part of the first optical cable close to one end is located in the cable cavity, the other end 412 of the first optical fiber in the first optical cable is located in the fourth fiber cavity, and the end surface of the optical fiber at this end is In the same plane as the lower surface of the third connecting body, the part of the first optical cable close to the other end is located in the cavity of the second optical cable and fixed to the fifth tube by glue;

The second optical cable 42 is composed of a second optical fiber located inside and a second optical cable sheath covering the second optical fiber. One end 421 of the second optical fiber in the second optical cable 42 is located in the first fiber hole and the end of the second optical fiber is located in the first fiber hole. The end face of the optical fiber is in the same plane as the upper surface of the first connecting body, the part near one end of the second optical cable is located in the cable accommodation cavity, and the other end 422 of the second optical fiber in the second optical cable 42 is located in the third optical fiber accommodation hole and the end The end face of the optical fiber is in the same plane as the lower surface of the second connecting body, and the part of the second optical cable close to the other end is located in the cavity of the first optical cable and fixed with the third tube by glue;

In the cable accommodation cavity, the first optical cable and the second optical cable are bonded together with the first pipe body by glue.

The invention has the following main beneficial technical effects: simple structure, easy manufacture, high qualified rate of finished products, wide temperature resistance range, low cost and easy batch manufacture.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of Example 1 of the present invention after peeling off.

Fig. 2 is a schematic diagram of the three-dimensional structure of the first connecting body in the present invention.

Fig. 3 is an enlarged bottom view of Fig. 2 .

FIG. 4 is a schematic cross-sectional structure diagram along the A-A direction of FIG. 3 .

Fig. 5 is a schematic diagram of the three-dimensional structure of the second connecting body in the present invention.

FIG. 6 is an enlarged top view of FIG. 5 .

FIG. 7 is a schematic cross-sectional structure diagram along the B-B direction of FIG. 6 .

Fig. 8 is a schematic diagram of the three-dimensional structure of the third connecting body in the present invention.

FIG. 9 is an enlarged top view of FIG. 8 .

FIG. 10 is a schematic cross-sectional structure diagram along the C-C direction of FIG. 9 .

Fig. 11 is a schematic cross-sectional structure diagram of Embodiment 2 of the present invention after peeling off.

Fig. 12 is a schematic cross-sectional view of another optical cable used in Example 3 of the present invention.

detailed description

Implementation Example 1

Please see Figures 1 to 10, a fiber optic connector with a simple structure is characterized in that it is composed of a first connecting body 1, a second connecting body 2, a third connecting body 3, a first optical cable 41 and a second optical cable 42 Constituted; the first connecting body 1 is composed of a first pipe body 11 and a second pipe body 12 connected together with the first pipe body. The first pipe body 11 has a cable accommodation cavity 13 inside, and the second pipe body 12 The interior has a first fiber-holding hole 14 and a second fiber-holding hole 15 close together. The first fiber-holding hole 14 is located in the center of the second tube body. The first fiber-holding hole and the second fiber-holding hole both pass through the first On the upper and lower surfaces of the two pipes, the first fiber-holding hole and the second fiber-holding hole are all connected to the cable-holding cavity, the diameter of the cable-holding cavity is greater than the diameter of the first fiber-holding hole, and the diameter of the cable-holding cavity is greater than that of the second cable-holding cavity Two diameters of the fiber-holding hole, the first tube body and the second tube body have equal outer diameters, and the axes of the first tube body, the cable-holding cavity, the second tube body, and the first fiber-holding hole are coincident;

The second connecting body 2 is composed of a third pipe body 21 and a fourth pipe body 22 connected together with the third pipe body. The third pipe body 21 has a first optical cable cavity 24 inside, and the inside of the fourth pipe body 22 There is a third fiber-holding hole 23 next to each other. The third fiber-holding hole 23 is located in the center of the fourth tube body. The third fiber-holding hole runs through the upper and lower surfaces of the fourth tube body. The third fiber-holding hole It communicates with the first optical cable cavity, the diameter of the first optical cable cavity is larger than the diameter of the third fiber hole, the third tube body and the fourth tube body have the same outer diameter, the third tube body, the first optical cable cavity , the axes of the fourth tube body and the third fiber hole are coincident;

The third connecting body 3 is composed of a fifth pipe body 31 and a sixth pipe body 32 connected together with the fifth pipe body. The fifth pipe body 31 has a second optical cable cavity 34 inside. There is a fourth fiber-holding hole 33 next to each other, the fourth fiber-holding hole 33 is located in the center of the sixth tube body, the fourth fiber-holding hole is through the upper and lower surfaces of the sixth tube body, the fourth fiber-holding hole It communicates with the second optical cable cavity, the diameter of the second optical cable cavity is larger than the diameter of the fourth fiber cavity, the fifth tube body and the sixth tube body have the same outer diameter, the fifth tube body, the second optical cable cavity , the axes of the sixth tube body and the fourth fiber hole are coincident;

One end of the first optical cable 41 is located in the second fiber hole and the end surface of the end is in the same plane as the upper surface of the first connector, and the part of the first optical cable near one end is located in the cable cavity and fixed in the first tube On the inner wall of the body, the other end of the first optical cable 41 is located in the third fiber cavity and the end surface of the end is in the same plane as the lower surface of the second connecting body, and the part of the first optical cable near the other end is located in the first optical cable cavity. and fixed on the inner wall of the third pipe body by glue;

One end of the second optical cable 42 is located in the first fiber hole and the end surface of the end is in the same plane as the upper surface of the first connecting body, and the part of the second optical cable near one end is located in the cable cavity and fixed in the first tube On the inner wall of the body, the other end of the second optical cable 42 is located in the fourth fiber cavity and the end surface of this end is in the same plane as the lower surface of the third connecting body, and the part of the second optical cable near the other end is located in the second optical cable cavity. and fixed on the inner wall of the fifth pipe body by glue.

Both the first optical cable and the second optical cable in this implementation example may be single-mode or multi-mode optical fibers.

The diameters of the first optical cable and the second optical cable in this implementation example are much smaller than the diameter of the cable accommodation cavity.

In this implementation example, the near end parts of the first optical cable and the second optical cable can be bonded to the inner wall of the first pipe body by glue; one end of the first optical cable is bonded to the second pipe body by glue; One end of the optical cable is glued together with the second tube; the other end of the first cable is glued with the fourth tube; the other end of the second cable is glued with the sixth tube ; The near other end part of the first optical cable is fixed on the inner wall of the third pipe body by adhesive bonding; the near other end part of the second optical cable is fixed on the inner wall of the fifth pipe body by adhesive bonding.

Implementation example 2

Please see Figure 11, and referring to Figures 1-10, a fiber optic connector with a simple structure is characterized in that it is composed of a first connecting body 1, a second connecting body 2, a third connecting body 3, a first optical cable 41 and The second optical cable 42 constitutes; the first connecting body 1 is composed of a first pipe body 11 and a second pipe body connected together with the first pipe body, the first pipe body 11 has a cable accommodation cavity 13 inside, and the second The inside of the tube body has a first fiber-holding hole and a second fiber-holding hole next to each other. The first fiber-holding hole is located in the center of the second tube body. On the upper and lower surfaces of the pipe body, the first fiber-holding hole and the second fiber-holding hole are all connected to the cable-holding cavity, the diameter of the cable-holding cavity is larger than the diameter of the first fiber-holding hole, and the diameter of the cable-holding cavity is larger than the second The diameter of the fiber-holding hole, the first tube body and the second tube body have equal outer diameters, and the axes of the first tube body, the cable-holding cavity, the second tube body, and the first fiber-holding hole are coincident;

The second connecting body 2 is composed of a third pipe body 21 and a fourth pipe body connected together with the third pipe body. The third pipe body 21 has a first optical cable cavity 24 inside, and the fourth pipe body has a tightening cavity inside the fourth pipe body. The third fiber-holding hole next to each other, the third fiber-holding hole is located in the center of the fourth tube body, the third fiber-holding hole runs through the upper and lower surfaces of the fourth tube body, the third fiber-holding hole and the first fiber-holding hole The optical cable cavity is connected, the diameter of the first optical cable cavity is greater than the diameter of the third fiber cavity, the third tube body and the fourth tube body have the same outer diameter, the third tube body, the first optical cable cavity, and the fourth tube The axes of the body and the third fiber hole are coincident;

The third connecting body 3 is composed of a fifth pipe body 31 and a sixth pipe body connected together with the fifth pipe body. The fifth pipe body 31 has a second optical cable cavity 34 inside, and the sixth pipe body has a tightening chamber inside the sixth pipe body. The fourth fiber-holding hole next to each other, the fourth fiber-holding hole is located in the center of the sixth tube body, the fourth fiber-holding hole runs through the upper and lower surfaces of the sixth tube body, the fourth fiber-holding hole and the second fiber-holding hole The optical cable cavity is connected, the diameter of the second optical cable cavity is greater than the diameter of the fourth fiber cavity, the fifth tube body and the sixth tube body have the same outer diameter, the fifth tube body, the second optical cable cavity, and the sixth tube The axes of the body and the fourth fiber hole are coincident;

The first optical cable 41 is composed of a first optical fiber located inside and a first optical cable sheath covering the first optical fiber. One end 411 of the first optical fiber in the first optical cable is located in the second fiber hole and the optical fiber at this end The end surface and the upper surface of the first connector are in the same plane, the part of the first optical cable close to one end is located in the cable cavity, the other end 412 of the first optical fiber in the first optical cable is located in the fourth fiber cavity, and the end surface of the optical fiber at this end is In the same plane as the lower surface of the third connecting body, the part of the first optical cable close to the other end is located in the cavity of the second optical cable and fixed to the fifth tube by glue;

The second optical cable 42 is composed of a second optical fiber located inside and a second optical cable sheath covering the second optical fiber. One end 421 of the second optical fiber in the second optical cable 42 is located in the first fiber hole and the end of the second optical fiber is located in the first fiber hole. The end face of the optical fiber is in the same plane as the upper surface of the first connecting body, the part near one end of the second optical cable is located in the cable accommodation cavity, and the other end 422 of the second optical fiber in the second optical cable 42 is located in the third optical fiber accommodation hole and the end The end face of the optical fiber is in the same plane as the lower surface of the second connecting body, and the part of the second optical cable close to the other end is located in the cavity of the first optical cable and fixed with the third tube by glue;

In the cable accommodation cavity, the first optical cable and the second optical cable are bonded together with the first pipe body by glue.

Both the first optical fiber in the first optical cable and the second optical fiber in the second optical cable in this implementation example may be single-mode or multi-mode optical fibers.

The diameter of the first optical cable in this implementation example is slightly smaller than the diameter of the third optical cable cavity.

The diameter of the second optical cable in this implementation example is slightly smaller than the diameter of the second optical cable cavity.

The sum of the diameters of the first optical cable and the second optical cable in this implementation example is slightly smaller than the diameter of the cable accommodation cavity.

In this implementation example, the near end parts of the first optical cable and the second optical cable can be bonded to the inner wall of the first pipe body by glue; one end of the first optical fiber is bonded to the second pipe body by glue; One end of the optical fiber is glued together with the first tube body; the other end of the first optical fiber is integrated with the fourth tube body through glue; the other end of the second optical fiber is glued together with the sixth tube body through glue ; The near other end part of the first optical cable is fixed on the inner wall of the fifth pipe body by adhesive bonding; the near other end part of the second optical cable is fixed on the inner wall of the third pipe body by adhesive bonding.

Implementation example 3

Please see Figure 12, and refer to Figures 1-11, a fiber optic connector with a simple structure, basically the same as the implementation example 2, the difference is that the first optical cable 41 is composed of a first optical fiber 411, a first optical fiber 411 located outside the first optical fiber A protective layer 413, a first optical cable sheath that is extruded and coated outside the first protective layer; The second optical cable sheath is plastic-coated outside the second protective layer; the first optical cable and the second optical cable are extruded and coated with an optical cable outer sheath 43; after stripping one end of the optical cable outer sheath, the Fix in the second fiber hole, fix the second optical fiber in the first fiber hole, the outer sheath of the optical cable in the cable cavity is bonded with the second tube as a whole; The outer sheath of the optical cable was stripped before the body and the third connecting body; the second protective layer was removed before the second optical fiber penetrated into the third fiber hole of the fourth tubular body; the first optical fiber Before passing through the fourth fiber hole of the sixth tube body, the first protective layer is removed; the first protective layer is evenly distributed outside the first optical fiber, and its material is aramid fiber yarn or glass fiber yarn; the second protective layer is uniformly distributed outside the second optical fiber, and its material is aramid fiber yarn or glass fiber yarn.

A fiber optic connector with a simple structure described in any of the above implementation examples is characterized in that the first connecting body, the second connecting body, and the third connecting body can be made integrally or in steps.

A fiber optic connector with a simple structure described in any of the above implementation examples is characterized in that the materials of the first connecting body, the second connecting body and the third connecting body can be copper or aluminum or ceramics; In parts by weight, it is made of ceramic powder composed of the following raw materials: silicon carbide: 60-70 parts, zirconia: 10-20 parts, silicon oxide: 15-25 parts, titanium dioxide: 4-6 parts, polyethylene wax: 1 to 2 parts, ammonium polyacrylate: 1 to 3 parts, polyvinyl alcohol: 0.3 to 0.5 parts, yttrium oxide: 0.1 to 0.3 parts, oleic acid: 2 to 4 parts, light stabilizer of commercially available type 622: 0.05 ～0.15 parts, the ultraviolet absorber of commercially available model is UV-327: 0.04～0.10 parts, the anti-yellowing agent of commercially available model is KT-023 or V78-P TDS: 0.1～0.3 part; or described ceramics by weight In terms of parts, it is made of ceramic powder composed of the following raw materials: silicon carbide: 60 parts, zirconia: 10 parts, silicon oxide: 15 parts, titanium dioxide: 4 parts, polyethylene wax: 1 part, ammonium polyacrylate: 1 part , polyvinyl alcohol: 0.3 part, yttrium oxide: 0.1 part, oleic acid: 2 parts, the light stabilizer that commercially available model is 622: 0.05 part, the ultraviolet absorber that commercially available model is UV-327: 0.04 part, commercially available The anti-yellowing agent whose model is KT-023 or V78-P TDS: 0.1 part; or the ceramic powder is made of ceramic powder composed of the following raw materials in parts by weight: silicon carbide: 65 parts, zirconia: 15 parts, Silicon oxide: 20 parts, titanium dioxide: 5 parts, polyethylene wax: 1.5 parts, ammonium polyacrylate: 2 parts, polyvinyl alcohol: 0.4 parts, yttrium oxide: 0.2 parts, oleic acid: 3 parts, the commercially available model is 622 Light stabilizer: 0.10 part, UV absorbent of UV-327 on the market: 0.07 part, anti-yellowing agent of KT-023 or V78-P TDS on the market: 0.2 part; or the ceramics by weight In terms of parts, it is made of ceramic powder composed of the following raw materials: silicon carbide: 70 parts, zirconia: 20 parts, silicon oxide: 25 parts, titanium dioxide: 6 parts, polyethylene wax: 2 parts, ammonium polyacrylate: 3 parts , polyvinyl alcohol: 0.5 part, yttrium oxide: 0.3 part, oleic acid: 4 parts, commercially available model is the light stabilizer of 622: 0.15 part, commercially available model is the ultraviolet absorber of UV-327: 0.10 part, commercially available The anti-yellowing agent whose model is KT-023 or V78-P TDS: 0.3 parts; or the ceramic powder is made of ceramic powder composed of the following raw materials in parts by weight: silicon carbide: 68 parts, zirconia: 12 parts, Silicon oxide: 18 parts, titanium dioxide: 4 parts, polyethylene wax: 1.6 parts, ammonium polyacrylate: 2.2 parts, polyvinyl alcohol: 0.36 parts, yttrium oxide: 0.18 parts, oleic acid: 3 parts, the commercially available model is 622 Light stabilizer: 0.08 parts, UV absorber of commercially available model UV-327: 0.09 part, anti-yellowing agent of commercially available model KT-023 or V78-P TDS: 0.24 parts.

The formulas of the above-mentioned ceramic materials are called successively: a large-scale formula, the first formula, the second formula, the third formula, and the fourth formula. #1, #2, #3, #4, #5; the commercially available model of W0.25 ceramic processing product is indicated as #6; the first connecting body is represented by code A, and the second connecting body is represented by code B , the third connector is represented by the code C, 100 samples were taken for each, and after testing, the following test results were obtained.

It can be clearly seen from the above table that the products made of ceramic materials in the present invention have better performances of drop resistance, pressure resistance, complex environment resistance and strong light resistance.

The optical fiber connector with a simple structure described in any of the above implementation examples is characterized in that the length of the first optical cable is 210mm±20mm.

The optical fiber connector with a simple structure described in any of the above implementation examples is characterized in that the length of the second optical cable is 150 mm±20 mm.

A fiber optic connector with a simple structure described in any of the above implementation examples is characterized in that the diameter of the first connecting body is 3 mm±0.1 mm, and the length of the first connecting body is 14 mm±2 mm.

A fiber optic connector with a simple structure described in any of the above implementation examples is characterized in that the diameter of the second connecting body is 3 mm±0.1 mm, and the length of the second connecting body is 10 mm±1 mm or 17 mm±1 mm.

A fiber optic connector with a simple structure described in any of the above implementation examples is characterized in that the diameter of the third connecting body is 3 mm ± 0.1 mm, and when the length of the second connecting body is 10 mm ± 1 mm, the third connecting body The length of the connecting body is or 17mm±1mm; when the length of the second connecting body is 17mm±1mm, the length of the third connecting body is or 10mm±1mm.

A fiber optic connector with a simple structure described in any of the above implementation examples is characterized in that the diameter of the first fiber containing hole is 0.30±0.03mm or 0.125±0.002mm; when the diameter of the first fiber containing hole is 0.30±0.002mm When the diameter of the second fiber hole is 0.03mm, the diameter of the second fiber hole is 0.30±0.03mm or 0.25±0.03mm; when the diameter of the first fiber hole is 0.125±0.002mm, the diameter of the second fiber hole is 0.125 ±0.002mm.

The optical fiber connector with a simple structure described in any of the above implementation examples is characterized in that the thickness of the wall of the first tube is 0.3mm-0.5mm.

The optical fiber connector with a simple structure described in any of the above implementation examples is characterized in that the inner diameter of the third tube body is 0.240mm-0.260mm or 0.8mm-1.2mm.

A fiber optic connector with a simple structure described in any of the above implementation examples is characterized in that the inner diameter of the fifth tube body is 0.240mm-0.260mm or 0.8mm-1.2mm.

In the present invention, the optical fiber contained in the first fiber hole constitutes the outer optical path, and the optical fiber accommodated in the second fiber hole constitutes the inner optical path. When used in the measuring device, the laser signal sent in the inner optical path passes through the front The reflection and return light of the object are detected by the optical fiber in the external optical path, and then the optical signal is analyzed to achieve the purpose of precise measurement. The first to third connectors in the present invention are troublesome to manufacture and easy to oxidize when copper or aluminum is used, but easy to manufacture, low cost, wide range of high and low temperature resistance, and not easy to age when ceramic materials are used.

The invention has the following main beneficial technical effects: simple structure, easy manufacture, high qualified rate of finished products, wide temperature resistance range, low cost and easy batch manufacture.

The present invention is not limited to the best implementation mode above, it should be understood that the concept of the present invention can be implemented in other forms, and they also fall within the protection scope of the present invention.

Claims (10)

1. a kind of easy structure joints of optical fibre, it is characterised in that：It is by the first connector, the second connector, the 3rd connection What body, the first optical cable and the second optical cable were constituted；First connector connected together by the first body and the first body second Body is constituted, and the first tubular body has appearance cable chamber, and the second tubular body holds with the fine hole of the first appearance being close in and second Fine hole, first holds fine hole position in the central authorities of the second body, first hold fine hole, second hold fine hole be all the body of insertion second it is upper, Lower surface, first holds fine hole, the second appearance fibre Kong Douyu holds cable chamber and is connected, and that holds cable chamber holds the straight of fine hole with diameter greater than first Footpath, holds the diameter for holding fine hole with diameter greater than second in cable chamber, and the first body has equal external diameter, first pipe with the second body Body, appearance cable chamber, the second body, the axis of the first appearance fibre Kong Sizhe are to overlap；

Second connector is made up of the 4th body that the 3rd body and the 3rd body connect together, the 3rd tubular body tool There is the first cable cavity of appearance, the 4th tubular body has the fine hole of the 3rd appearance being close in, and the 3rd holds fine hole position in the 4th body Central authorities, the 3rd holds the upper and lower surface that fine hole is the body of insertion the 4th, and the 3rd appearance fibre cable cavities of Kong Yurong first are connected, hold The diameter for holding fine hole with diameter greater than the 3rd of the first cable cavity, the 3rd body has equal external diameter, the 3rd pipe with the 4th body Body, the first cable cavity of appearance, the 4th body, the axis of the 3rd appearance fibre Kong Sizhe are to overlap；

3rd connector is made up of the 6th body that the 5th body and the 5th body connect together, the 5th tubular body tool There is the second cable cavity of appearance, the 6th tubular body has the fine hole of the 4th appearance being close in, and the 4th holds fine hole position in the 6th body Central authorities, the 4th holds the upper and lower surface that fine hole is the body of insertion the 6th, and the 4th appearance fibre cable cavities of Kong Yurong second are connected, hold The diameter for holding fine hole with diameter greater than the 4th of the second cable cavity, the 5th body has equal external diameter, the 5th pipe with the 6th body Body, the second cable cavity of appearance, the 6th body, the axis of the 4th appearance fibre Kong Sizhe are to overlap；

The first cable jacket that first optical cable is enveloped by internally positioned the first optical fiber and by the first optical fiber is constituted, and first In optical cable one end of the first optical fiber be located at second hold in fine hole and the fiber end face at the end and the first connector upper surface same In one plane, the first optical cable is located near the part of one end and holds cable intracavity, and the other end of the first optical fiber is located at the in the first optical cable Four hold in fine holes and the fiber end face at the end and the 3rd connector lower surface in the same plane, the first optical cable is near the other end Part be located to hold and the second optical cable intracavity and mutually fixed with the 5th body by viscose glue；

The second cable jacket that second optical cable is enveloped by internally positioned the second optical fiber and by the second optical fiber is constituted, and second In optical cable one end of the second optical fiber be located at first hold in fine hole and the fiber end face at the end and the first connector upper surface same In one plane, the second optical cable is located near the part of one end and holds cable intracavity, and the other end of the second optical fiber is located at the in the second optical cable Three hold in fine holes and the fiber end face at the end and the second connector lower surface in the same plane, the second optical cable is near the other end Part be located to hold and the first optical cable intracavity and mutually fixed with the 3rd body by viscose glue；

In the appearance cable chamber, the first optical cable, the second optical cable are bonded together by viscose glue with the first body.

2. a kind of easy structure joints of optical fibre according to claim 1, it is characterised in that first optical fiber, second Optical fiber is all single mode or multimode fibre.

3. a kind of easy structure joints of optical fibre according to claim 1 or claim 2, it is characterised in that described The diameter of one optical cable is less than the diameter for holding the 3rd cable cavity.

4. a kind of easy structure joints of optical fibre according to claim 3, it is characterised in that the diameter of second optical cable Less than the diameter of the second cable cavity of appearance.

5. a kind of easy structure joints of optical fibre according to claim 4, it is characterised in that first optical cable and second The diameter sum of optical cable is less than the diameter for holding cable chamber.

6. a kind of easy structure joints of optical fibre according to claim 5, it is characterised in that first optical cable, second Nearly one end part of optical cable is all by viscose glue bonding and the inwall of the first body；One end of first optical fiber is by viscose glue and second pipe Body sticks to one；One end of second optical fiber is sticked to one by viscose glue with the first body；The other end of the first optical fiber passes through viscose glue It is integrated with the 4th body；The other end of the second light is sticked to one by viscose glue with the 6th body；First optical cable it is near another End part is bonded and fixed at the inwall of the 5th body by viscose glue；The nearly other end part of the second optical cable is adhesively fixed by viscose glue In the inwall of the 3rd body.

7. a kind of easy structure joints of optical fibre according to claim 1 to claim 6 any one, its feature exists In first connector, the second connector, the material of the 3rd connector are all copper or aluminum or ceramics；The ceramics are by weight Part meter, the ceramics being made up of following raw material are made：Carborundum：60～70 parts, zirconium oxide：10～20 parts, silicon oxide：15～25 Part, titanium dioxide：4～6 parts, Tissuemat E：1～2 part, ammonium polyacrylate：1～3 part, polyvinyl alcohol：0.3～0.5 part, oxidation Yttrium：0.1～0.3 part, Oleic acid：2～4 parts, the light stabilizer of commercially available model 622：0.05～0.15 part, commercially available model UV- 327 UV absorbent：0.04～0.10 part, the anti-yellowing agent of commercially available model KT-023 or V78-P TDS：0.1～0.3 Part；Or the ceramics are by weight, the ceramics being made up of following raw material are made：Carborundum：60 parts, zirconium oxide：10 parts, Silicon oxide：15 parts, titanium dioxide：4 parts, Tissuemat E：1 part, ammonium polyacrylate：1 part, polyvinyl alcohol：0.3 part, yittrium oxide：0.1 Part, Oleic acid：2 parts, the light stabilizer of commercially available model 622：0.05 part, the UV absorbent of commercially available model UV-327： 0.04 part, the anti-yellowing agent of commercially available model KT-023 or V78-P TDS：0.1 part；Or the ceramics are by weight, by The ceramics that following raw material is constituted are made：Carborundum：65 parts, zirconium oxide：15 parts, silicon oxide：20 parts, titanium dioxide：5 parts, poly- second Alkene wax：1.5 parts, ammonium polyacrylate：2 parts, polyvinyl alcohol：0.4 part, yittrium oxide：0.2 part, Oleic acid：3 parts, commercially available model 622 Light stabilizer：0.10 part, the UV absorbent of commercially available model UV-327：0.07 part, commercially available model KT-023 or The anti-yellowing agent of V78-P TDS：0.2 part；Or the ceramics are by weight, the ceramics being made up of following raw material are made： Carborundum：70 parts, zirconium oxide：20 parts, silicon oxide：25 parts, titanium dioxide：6 parts, Tissuemat E：2 parts, ammonium polyacrylate：3 parts, it is poly- Vinyl alcohol：0.5 part, yittrium oxide：0.3 part, Oleic acid：4 parts, the light stabilizer of commercially available model 622：0.15 part, commercially available model The UV absorbent of UV-327：0.10 part, the anti-yellowing agent of commercially available model KT-023 or V78-P TDS：0.3 part；Or The ceramics by weight, make by the ceramics being made up of following raw material：Carborundum：68 parts, zirconium oxide：12 parts, silicon oxide： 18 parts, titanium dioxide：4 parts, Tissuemat E：1.6 parts, ammonium polyacrylate：2.2 parts, polyvinyl alcohol：0.36 part, yittrium oxide：0.18 Part, Oleic acid：3 parts, the light stabilizer of commercially available model 622：0.08 part, the UV absorbent of commercially available model UV-327： 0.09 part, the anti-yellowing agent of commercially available model KT-023 or V78-P TDS：0.24 part.

8. a kind of easy structure joints of optical fibre according to claim 7, it is characterised in that the length of first optical cable For 210mm ± 20mm；The length of the second optical cable is 150mm ± 20mm；A diameter of 3mm ± 0.1mm of first connector, the The length of one connector is 14mm ± 2mm；A diameter of 3mm ± 0.1mm of second connector, the length of the second connector is 10mm ± 1mm or 17mm ± 1mm.

9. a kind of easy structure joints of optical fibre according to claim 8, it is characterised in that the 3rd connector it is straight Footpath is 3mm ± 0.1mm, and when the length of the second connector is 10mm ± 1mm, the length of the 3rd connector is or 17mm ± 1mm； When the length of the second connector is 17mm ± 1mm, the length of the 3rd connector is or 10mm ± 1mm.

10. a kind of easy structure joints of optical fibre according to claim 9, it is characterised in that described first holds fine hole A diameter of 0.30 ± 0.03mm or 0.125 ± 0.002mm；As a diameter of 0.30 ± 0.03mm that first holds fine hole, described the The two a diameter of 0.30 ± 0.03mm or 0.25 ± 0.03mm for holding fine hole；When first hold fine hole a diameter of 0.125 ± During 0.002mm, described second holds a diameter of 0.125 ± 0.002mm in fine hole；The wall thickness of first body is 0.3mm ～0.5mm；The internal diameter of the 3rd body is 0.240mm～0.260mm or 0.8mm～1.2mm；The internal diameter of the 5th body For 0.240mm～0.260mm or 0.8mm～1.2mm.