WO2021232339A1

WO2021232339A1 - Interface board and interface device of optical fiber test instrument

Info

Publication number: WO2021232339A1
Application number: PCT/CN2020/091528
Authority: WO
Inventors: 吕根良
Original assignee: 南京续点通信科技有限公司
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-11-25

Abstract

Disclosed in the present invention is an interface device of an optical fiber test instrument, comprising an optical fiber detection interface board, an adapting unit, a standard connector assembly, and a detector, wherein the optical fiber detection interface board couples a movable connector to the standard connector assembly by means of the adapting unit; a through hole is formed in the middle part of the optical fiber detection interface board; a first detection hole is further formed in the side surface of the through hole; the adapting unit at least comprises a first adapting piece adapted to an SC-type connector and a second adapting piece adapted to an FC-type connector; the adapting unit is vertically communicated with the through hole; a ferrule of the standard connector assembly is inserted into the through hole, and the end of the ferrule is located at an intersection of the through hole and the first detection hole; the standard connector assembly can be detachably mounted on a lower end surface of the optical fiber detection interface board; and the detector is provided in the first detection hole and connected to the optical fiber detection interface board. The present invention implements radial mounting of the detector, can be adapted, by means of the adapting unit, to different specifications of connectors to be detected, and facilitates processing, production, and assembling.

Description

Interface board and interface device of optical fiber testing instrument

Technical field

The invention relates to the technical field of optical fiber communication, in particular to an interface board and an interface device of an optical fiber test instrument.

Background technique

With the popularization of optical fiber networks, factory-polished active connectors and field-assembled active connectors have been widely used. The surface quality of optical fiber active connectors directly affects the loss value of optical fiber connections.

The quality inspection of the traditional movable connector surface is done through an optical magnifying glass. The inspection method is to judge the surface quality of the movable connector by observing the scratches, pollution and other defects on the surface of the movable connector. It cannot quantitatively detect the surface loss of the actual movable connector. . In view of the above problems, the method of judging the quality of the fiber end using the amount of light leakage of the optical fiber movable connector at the adapter connection point has emerged. At the same time, the design of the related fiber end face detector has also become one of the key points.

The interface design of the existing optical fiber testing instrument is connected by a threaded pair, and the detector cannot be installed radially, and it cannot be adapted to various types of movable connectors, which hinders the rapid introduction of the optical fiber end face detector to the market. Therefore, how to design an end face detector interface device so that it can not only be suitable for various types of movable connectors, but also can be installed in the radial direction has become one of the design difficulties.

Invention and creation content

The purpose of this section is to summarize some aspects of the embodiments created by the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the description abstract and the name of the invention creation in this application to avoid obscuring the purpose of this section, the description abstract and the name of the invention creation, and such simplification or omission cannot be used to limit the invention and creation Range.

In view of the above and/or the existing problems in the interface board and interface device of the existing optical fiber test instrument, the invention is proposed.

Therefore, one of the objectives of the present invention is to provide an interface board and interface device of an optical fiber test instrument, which can adapt to different specifications of connectors to be inspected through the adapter unit while realizing the radial installation of the detector, which is convenient for processing Production and assembly.

In order to solve the above technical problems, the present invention provides the following technical solutions: an interface board of an optical fiber test instrument, which includes:

An optical fiber inspection interface board, a through hole is opened in the middle, and a first inspection hole is also opened on the side of the through hole; and,

The centering component is installed on the upper part of the optical fiber detection interface board to connect to the movable connector for detection.

As a preferred solution of the interface board of the optical fiber test instrument created by the present invention, the centering component includes:

The centering sleeve arranged inside the through hole is a ring-shaped structure with a notch, the notch is opposite to the first detection hole, and a first inner edge is opened on the inner side of the lower end of the through hole One end of the centering sleeve is inserted into the through hole to contact the upper end surface of the first inner edge table, and the other end extends out of the upper end surface of the optical fiber detection interface board, wherein the centering sleeve The inner diameter of is equal to the diameter of the connector ferrule, and the inner diameter of the first inner edge platform is between the inner diameter and the outer diameter of the centering sleeve.

As a preferred solution of the interface board of the optical fiber test instrument created by the present invention, the centering component further includes:

Mounting the centering sleeve on the fixing part of the optical fiber detection interface board, the fixing part includes a fixing sleeve sleeved on the upper part of the protruding end of the centering sleeve and fixed to the fixing sleeve The fixing plate on the outer wall of the lower end, the fixing sleeve is provided with a second detection hole, the second detection hole communicates with the first detection hole, and the fixing plate can be detachably installed on the optical fiber detection interface board On the end surface, the inner surface of the upper end of the fixed sleeve is provided with a second inner edge platform, and the inner diameter of the second inner edge platform is between the inner diameter and the outer diameter of the centering sleeve.

As a preferred solution for the interface board of the optical fiber test instrument created by the present invention, a positioning boss is further provided on the upper end surface of the first inner edge platform, and the positioning boss is in harmony with the notch. At the same time, the positioning boss does not block the first detection hole.

As a preferred solution of the interface board of the optical fiber test instrument created by the present invention, it also includes:

A pressure plate, which can be detachably arranged on the upper end surface of the optical fiber detection interface board, a first through slot is opened in the middle of the pressure plate for the fixing sleeve to pass through, and a first pressure is also opened on the lower end surface of the pressure plate A connecting groove, the groove bottom surface of the first crimping groove is in contact with the upper end surface of the fixing plate and the two press against each other.

An interface device of an optical fiber test instrument, which further includes:

An adapter unit that can be detachably installed on the upper end surface of the optical fiber detection interface board, and the adapter unit can at least adapt to the joint of an SC connector or an FC connector;

A detector, which is arranged inside the first detection hole and is connected to the optical fiber detection interface board; and

The box, the optical fiber detection interface board is arranged on the upper part of the box, and the detector is located inside the box.

As a preferred solution of the interface device of the optical fiber test instrument created by the present invention, wherein:

The switching unit includes at least:

The first adaptor adapted to the SC connector includes a first connecting plate detachably installed on the end surface of the optical fiber detection interface board, and hooks symmetrically arranged on both sides of the end surface of the first connecting plate , The middle of the first connecting plate is provided with a second through groove for the fixing sleeve to pass through, and a second crimping groove is also opened on the lower end surface of the first connecting plate, the groove of the second crimping groove The bottom surface is in contact with the upper end surface of the fixing plate and the two are pressed against each other. The first adaptor further includes a guide plate and a positioning plate arranged on the end surface of the first connecting plate.

As a preferred solution of the interface device of the optical fiber test instrument created by the present invention, the switching unit at least includes:

A second adapter piece adapted to the FC type connector, which can be detachably installed on the upper end surface of the optical fiber detection interface board. The second adapter piece includes a second connecting plate and is arranged on the second connecting plate The threaded interface on the upper end surface is adapted to the interface of the FC-type connector. The middle of the second connecting plate is provided with a third through groove for the fixing sleeve to pass through. The end surface is also provided with a third crimping groove, and the groove bottom surface of the third crimping groove is in contact with the upper end surface of the fixing plate and the two press against each other.

As a preferred solution of the interface device of the optical fiber test instrument created by the present invention, it further includes:

Standard connector assembly, the ferrule is inserted into the through hole and the end of the ferrule is located at the intersection of the through hole and the first detection hole, and it is detachably installed on the optical fiber detection interface board The lower end face,

The ferrule of the standard connector assembly is also provided with a tail handle,

The lower end surface of the optical fiber detection interface board is further provided with an external thread sleeve at a position corresponding to the through hole, the through hole extends to penetrate the external thread sleeve, and the nut gland is threadedly connected with the external thread sleeve,

The tail handle is located between the nut gland and the external thread sleeve, and the nut gland is provided with a hole for the tail handle to pass through. The tail handle and the nut gland are also It is provided with a pad.

As a preferred solution of the interface device of the optical fiber test instrument created by the present invention, the outer surface of the tail handle is provided with a card slot, and the card slot is provided with at least one set,

The lower end surface of the external thread sleeve is also provided with a positioning block corresponding to the slot, and at least one set of the positioning block is provided.

The beneficial effects created by the present invention:

While realizing the radial installation of the detector, the invention can adapt to the connectors to be inspected of different specifications, can compress the sleeve at multiple points, protect the detector from being exposed, and avoid the interference of the external natural light on the detector. ; The whole device is a detachable structure, which is convenient for the cleaning and replacement of the internal centering components and standard connectors; and each component is evenly split design, which is convenient for processing, production and assembly. At the same time, it solves the problem of the traditional nut pair fixing the interface device. The problem of accurate positioning.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor. in:

Fig. 1 is a schematic diagram of the structure of the first embodiment of the invention.

Fig. 2 is a schematic diagram of the structure of the optical fiber detection interface board in the invention.

Figure 3 is a schematic diagram of the installation explosion created by the present invention.

Figure 4 is a cross-sectional view of the second embodiment of the invention.

Figure 5 is a cross-sectional view of a third embodiment of the invention.

Fig. 6 is a schematic diagram of the structure of the fixing member in the creation of the present invention.

Fig. 7 is a partial cross-sectional view of the optical fiber detection interface board in the invention.

Fig. 8 is a cross-sectional view of the fourth embodiment of the invention.

Fig. 9 is a schematic structural diagram of a fifth embodiment of the invention.

Fig. 10 is a schematic diagram of the connection between the invention and the movable connector to be detected.

Figure 11 is a schematic diagram of the overall structure created by the present invention.

Fig. 12 is a schematic diagram of the structure of the first adapter in the creation of the present invention.

Fig. 13 is a schematic structural diagram of a seventh embodiment of the invention.

Fig. 14 is a schematic diagram of the structure of the second adapter in the creation of the present invention.

Fig. 15 is a schematic structural diagram of an eighth embodiment of the invention.

Fig. 16 is a partial cross-sectional view of the ninth embodiment of the invention.

Fig. 17 is a structural diagram of the nut gland in the creation of the present invention.

Fig. 18 is a partial schematic diagram of the tenth embodiment of the invention.

Fig. 19 is a schematic diagram of the structure of the optical fiber detection interface board in the creation of the present invention.

Detailed ways

In order to make the above objects, features and advantages created by the present invention more obvious and understandable, the specific implementation manners created by the present invention will be described in detail below in conjunction with the accompanying drawings of the specification.

In the following description, many specific details are explained in order to fully understand the invention. However, the invention can also be implemented in other ways different from those described here. Those skilled in the art can do so without departing from the connotation of the invention. In the case of similar promotion, the invention is not limited by the specific embodiments disclosed below.

Secondly, the “one embodiment” or “embodiment” referred to herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation of the invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively mutually exclusive embodiments with other embodiments.

The quality inspection of the traditional movable connector surface is done through an optical magnifying glass. The inspection method is to judge the surface quality of the movable connector by observing the scratches, pollution and other defects on the surface of the movable connector. It cannot quantitatively detect the surface loss of the actual movable connector. . Immediately appeared a method of judging the quality of the fiber end using the amount of light leakage of the optical fiber movable connector at the adapter connection point. This method is simple and accurate, and saves manpower. The optimization of the design of the fiber end face detector using this method is imminent.

In the connector end-face loss detection technology, in order to achieve the surface quality detection of the optical fiber movable connector ferrule, the standard connector in the test instrument needs to be coupled with the movable connector to be tested, and the photosensitive element (such as PD) is set at the coupling point, and the test The inward coupling point of the instrument emits a detection light wave that can generate overflow light at the fiber connection point, and finally the surface quality and loss value of the movable connector to be tested is judged by the amount of overflow light power detected by the detector.

It should be noted that the purpose of the present invention is to provide an end face detector interface device that can not only be suitable for various types of movable connectors, but also can install the detector in the radial direction. The fixing device in which the connector and the detector are assembled in an expected manner, and the rest of the principle technologies related to the detection method or the detection step process are not the content that needs to be explained in the creation of the present invention.

Example 1

Referring to Figures 1 and 2, it is the first embodiment created by the present invention. This embodiment provides an interface board of an optical fiber test instrument. Through the centering assembly 200, it is possible to install the detector in the radial direction and simultaneously perform The type of activity type is detected by the activity connector.

Specifically, the interface board of the optical fiber testing instrument includes an optical fiber inspection interface board 100 and a centering assembly 200. A through hole 101 is opened in the middle of the optical fiber inspection interface board 100, and a first inspection hole 102 is also opened on the side of the through hole 101. , The centering assembly 200 is installed on the upper part of the optical fiber inspection interface board 100 to connect to the movable connector for inspection.

Based on the above, the centering assembly 200 communicates with the through hole 101 to detect the coupling of the mating ferrule, and the centering assembly 200 can be installed on the optical fiber inspection interface board 100 through conventional fixing methods such as screw fixing, bolt fixing, and buckle fixing. On the upper part, it should be noted that the purpose of the centering assembly 200 is to couple the ferrule of the connector. It only needs to provide a hole for inserting the ferrule. Therefore, the centering assembly 200 can actually be inserted into the ferrule. The outer sleeve and the detector are installed inside the first detection hole 102.

Example 2

Refer to Figures 3 and 4, which are the second embodiment created by the present invention. The difference from the previous embodiment is that this embodiment facilitates the alignment operation of the ferrule 801 when detecting various types of movable connectors. Detection.

Specifically, the centering assembly 200 includes a centering sleeve 201 arranged inside the through hole 101. The inner diameter of the centering sleeve 201 is equal to the diameter of the ferrule 801 to assist the ferrule of the movable connector and the standard connector assembly 800 801 is inserted vertically into the through hole 101, so that the ferrules 801 of the two can be directly opposite to and fully coupled. The centering sleeve 201 is a ring structure with a gap 201a, and the gap 201a is opposite to the first detection hole 102 to make the coupling point It can fall within the detectable range of the detector 600. A first inner edge platform 103 is opened on the inner surface of the lower end of the through hole 101. One end of the centering sleeve 201 is inserted into the through hole 101 and the upper edge of the first inner edge platform 103. The end face is in contact, and the other end protrudes from the upper end face of the optical fiber detection interface board 100. The inner diameter of the first inner edge platform 103 is between the inner diameter and outer diameter of the centering sleeve 201, and the centering sleeve 201 falls on the first inner edge. On the stage 103, it will not move freely in the through hole 101, restricting its position.

Based on the above, the ferrules 801 of the movable connector and the standard connector assembly 800 are coupled and docked in the centering sleeve 201.

Example 3

5 and 6, it is a third embodiment created by the present invention. The difference from the previous embodiment is that the centering assembly 200 of this embodiment also includes a fixing for mounting the centering sleeve 201 on the optical fiber inspection interface board 100. The piece 202 can better limit the position of the centering sleeve 201 in the through hole 101 and will not fall off.

Specifically, the fixing member 202 includes a fixing sleeve 202a sleeved on the upper part of the protruding end of the centering sleeve 201 and a fixing plate 202b fixed on the outer wall surface of the lower end of the fixing sleeve 202a. The fixing plate 202b is detachably installed on the optical fiber inspection. On the interface board 100, the fixing method is bolt fixing, buckle fixing, etc., referring to Figure 5 (a) ~ Figure 5 (b), the fixing sleeve 202a is provided with a second detection hole 202c, the second detection hole 202c and the first The detection holes 102 are connected. It should be noted here that the second detection hole 202c needs to be opened only when the extension of the first detection hole 102 and the fixing sleeve 202a intersect, and the fixing plate 202b can be detached and installed on the optical fiber detection interface board. A second inner edge platform 202d is provided on the upper end surface of the fixed sleeve 202a and the inner surface of the upper end of the fixed sleeve 202a. The inner diameter of the second inner edge platform 202d is between the inner diameter and the outer diameter of the centering sleeve 201.

Based on the above, the second inner edge platform 202d on the fixed sleeve 202a cooperates with the first inner edge platform 103 to jointly limit the range of movement of the centering sleeve 201 in the through hole 101 to prevent it from moving and falling off at will.

Example 4

7 and 8, it is a fourth embodiment created by the present invention. The difference from the previous embodiment is that this embodiment also includes a positioning boss 104, which is convenient to ensure that the notch 201a of the centering sleeve 201 is always consistent with the first detection The hole 102 is relatively, and does not rotate in the through hole 101, which provides a better guarantee basis for the effect of the inspection work.

Specifically, a positioning boss 104 is also provided on the upper end surface of the first inner edge platform 103, and the positioning boss 104 is in harmony with the notch 201a. At the same time, the positioning boss 104 does not block the first detection hole 102, and the positioning boss 104 is located at On the inner wall of the through hole 101, the size of the positioning boss 104 is the same as that of the notch 201a, but it should be emphasized that it is only necessary to ensure that the notch 201a faces the first detection hole 102 and does not affect the work of the detector 600. Of course, when When the notch 201a is facing the first detection hole 102, the detection effect is the best.

Example 5

Referring to FIG. 9, it is a fifth embodiment created by the present invention. The difference from the previous embodiment is that this embodiment also includes a pressing plate 300. The pressing plate 300 further presses the fixing member 202 on the optical fiber detection interface board 100 to prevent fixing The piece 202 is offset, and the centering sleeve 201 is fixed in many ways.

Further, the pressure plate 300 can be detachably arranged on the upper end surface of the optical fiber detection interface board 100, and the detachable fixing method can be bolt connection or snap connection. The middle of the pressure plate 300 is provided with a first passage through which the fixing sleeve 202a passes. The groove 301 is also provided with a first crimping groove 302 on the lower end surface of the pressure plate 300. Each groove surface presses the fixing plate 202b on the optical fiber inspection interface board 100 so that it will not deviate or vibrate.

Example 6

Referring to Figures 2, 10, and 11, this is a sixth embodiment created by the present invention. This embodiment provides an interface device of an optical fiber test instrument, which includes the above-mentioned interface board and is adapted to be adapted by the adapter unit 400 Various types of movable connectors can also ensure better and reliable fixing of the movable connectors.

Specifically, the interface device of the optical fiber testing instrument further includes a switching unit 400, a detector 600, and a box 700. The optical fiber detection interface board 100 couples the movable connector with the standard connector assembly 800 through the switching unit 400, and detects The device 600 is arranged inside the first detection hole 102 to connect to the optical fiber detection interface board 100. Specifically, it can be fixed by screws, bolts, buckles and other conventional fixing methods. The coupling point is located in the through hole 101 and falls on the first detection interface. Within the detectable range of the detector 600 in the hole 102, that is, not beyond the extension section where the circular surface of the first detection hole 102 is located, the adapter unit 400 can at least fit the SC connector 500 or FC connector The connector, in addition to adapting to the above connectors, should also be able to adapt to ordinary connectors, which include movable connectors with only ferrule, pigtail and tail shank structures. Of course, other types such as LC, ST, MU, etc. The connector should also have an adapted adapter.

As mentioned above, the optical fiber inspection interface board 100 is arranged on the upper part of the box 700, and the detector 600 is arranged inside the box 700 to connect with the optical fiber inspection interface board 100 to realize the installation of the optical fiber inspection interface board 100. The optical fiber inspection interface board 100 is connected to the The boxes 700 can be detachably connected, and the detachable connection mode can be bolt connection, snap connection, rail connection, etc. The optical fiber detection interface board 100 can be set horizontally or vertically without affecting the detection.

In this embodiment, the first adapter 401 for the SC-type connector 500 and the second adapter 402 for the FC-type connector are used for specific description, both of which can be detachably mounted on the fiber inspection interface board 100. The end face can be fixed by screws, bolts, buckles and other conventional fixing methods, which will not be repeated here. It should be noted that the adapter unit 400 and the through hole 101 are connected up and down here, and the purpose is to make the to-be-detected The ferrule 801 of the movable connector is inserted into the through hole 101 to facilitate coupling with the ferrule 801 of the standard connector assembly 800 for detection. Similarly, the ferrule 801 of the standard connector assembly 800 is inserted into the through hole 101, The end of the ferrule 801 is located at the intersection of the through hole 101 and the first detection hole 102, and it can be detachably installed on the lower end surface of the optical fiber detection interface board 100. For the specific detachable installation method, please refer to the above-mentioned specific fixing method, such as thread Conventional installation methods such as connection and snap connection. Of course, none of the above fixing methods affect the specific implementation of this embodiment. It should be noted that the above-mentioned intersection is specifically the intersection area of the through hole 101 and the extension section of the first detection hole 102.

Based on the above, when the movable connector is installed on the optical fiber inspection interface board 100 through the adapter unit 400, the ferrule 801 of the movable connector and the ferrule 801 of the standard connector assembly 800 are coupled at the intersection to detect the detector 600. The quality of the movable connector provides the basis. The detector 600 is inserted into the first detection hole 102 and installed, and is radially perpendicular to the through hole 101, that is, perpendicular to the coupling point, which facilitates the detection of light leakage by the detector 600.

Example 7

Referring to Figures 12 and 13, this is a seventh embodiment created by the present invention. The difference from the previous embodiment is that the first adapter 401 of this embodiment can be adapted to the SC-type connector 500 to fix it to achieve the SC-type The connector 500 is better and reliably fixed.

In this embodiment, the installation position of the first adapter 401 is the installation position of the pressure plate 300, and the installation method is the same. Therefore, the pressure plate 300 is replaced by the first adapter 401 for installation. Specifically, the first adapter 401 It includes a first connecting board 401a that can be detachably installed on the upper end surface of the optical fiber detection interface board 100, and hooks 401b symmetrically arranged on both sides of the upper end surface of the first connecting board 401a, and the free end of the hook 401b has an inward protrusion , The hook 401b pulls the SC connector 500 and fixes it with male and female. The hook 401b and the SC connector 500 can be detachably connected. The connection method refers to the installation method of the SC connector 500 itself. The middle of the first connecting plate 401a is provided with a The second through groove 401a-1 through which the fixing sleeve 202a passes, the lower end surface of the first connecting plate 401a is also provided with a second crimping groove 401a-2, the groove bottom surface of the second crimping groove 401a-2 and the fixing plate The upper end surface of 202b is in contact with each other and the two press against each other, and the function of the second pressing groove 401a-2 is the same as that of the first pressing groove 302.

Further, the first adapter 401 also includes a guide plate 401c and a positioning plate 401d which are arranged on the other two sides of the upper end surface of the first connecting plate 401a. The SC connector 500 slides along the guide plate 401c, and is mounted on the positioning plate 401d and the hook. Under the joint action of 401b, the ferrule 801 can accurately fall into the centering sleeve 201.

Example 8

14 and 15, it is an eighth embodiment created by the present invention. The difference from the previous embodiment is that the second adapter 402 of this embodiment can better fit the FC type connector to fix it. Better and reliable fixing of FC type connector.

In this embodiment, the installation position of the second adapter 402 is the installation position of the pressure plate 300, and the installation method is the same. Therefore, the second adapter 402 is used to replace the pressure plate 300 for installation. For details, refer to the FC type connector thread For connection installation, the second adapter 402 includes a second connecting plate 402a, and a threaded interface 402b arranged on the upper end of the second connecting plate 402a. The threaded interface 402b is adapted to the interface of the FC connector, and the second connecting plate 402a The middle part is provided with a third through groove 402a-1 for the fixing sleeve 202a to pass through, and a third crimping groove 402a-2 and a third crimping groove 402a-2 are opened on the lower end surface of the second connecting plate 402a. The bottom surface is in contact with the upper end surface of the fixing plate 202b and the two press against each other. The function of the third crimping groove 402a-2 is the same as that of the first crimping groove 302.

Example 9

16 and 17, it is a ninth embodiment created by the present invention. The difference from the previous embodiment is that this embodiment uses a detachable nut gland 106 to cooperate with an external threaded sleeve 105, and a standard connector assembly 800 Fixed on the optical fiber detection interface board 100.

In the standard connector assembly 800, the ferrule 801 is inserted into the through hole 101 and the end of the ferrule 801 is located at the intersection of the through hole 101 and the first detection hole 102, and it is detachably mounted on On the lower end surface of the optical fiber detection interface board 100, the ferrule 801 of the standard connector assembly 800 is provided with a tail handle 802, and the lower end surface of the optical fiber detection interface board 100 is also provided with an external thread sleeve 105 at a position corresponding to the through hole 101. The through hole 101 extends to open the external thread sleeve 105, the nut gland 106 is threadedly connected with the external thread sleeve 105, the tail shank 802 is located between the nut gland 106 and the external thread sleeve 105, and the nut gland 106 is provided with a tail shank The hole 802 passes through is provided with a gasket 803 on the tail handle 802 and the nut gland 106. To realize the detachable fixation of the standard connector assembly 800, it should be noted that when the nut gland 106 compresses the gasket 803 and the tail handle 802, the end of the ferrule 801 of the standard connector assembly 800 is located at the detector 600 The area that can be detected.

Example 10

18, this is the tenth embodiment created by the present invention. The difference from the previous embodiment is that this embodiment prevents the standard connector assembly 800 from shifting during work, which results in test repeatability differences, and also prevents slopes. The angle matching is not correct when the type ferrule is coupled. The outer side of the tail handle 802 is provided with a slot 802a and the lower end of the male threaded sleeve 105 is provided with a positioning block 105a to cooperate and locate, which limits the standard connector assembly 800 in the through hole 101. It moves by rotation. Here, the card slot 802a is provided with at least one set. Similarly, the positioning block 105a is also provided with at least one set. However, it should be noted that the number of the card slot 802a and the positioning block 105a does not need to be exactly the same. It needs to realize the function of positioning and fixing.

Example 11

Refer to Figure 19, which is an eleventh embodiment created by the present invention. The difference from the previous embodiment is that in order to save material or look good, a concave installation groove 107 can be provided on the fiber inspection interface board 100 to fix it. The member 202, the pressure plate 300, the first adapter member 401 and the second adapter member 402 can all be installed in the installation groove 107, and at the same time, it can also play a role of damping and avoiding work deviation.

In summary, the centering assembly 200 and the pressing plate 300 are installed on the fiber inspection interface board 100, the detector 600 is installed in the first inspection hole 102, and the standard connector assembly 800 and the ferrule 801 are inserted into the centering sleeve 201 , The movable connectors to be tested of various specifications can be directly inserted into the centering sleeve 201 and coupled with the standard connector assembly 800 ferrule 801. After being pushed, the movable connector is supported by the fixed sleeve 202a to maintain the tightened state. The lower detector 600 detects the end face loss of the movable connector to be tested; replace the pressure plate 300 with the first adapter 401, slide the SC connector 500 along the guide plate 401c, under the combined action of the positioning plate 401d and the hook 401b, The ferrule 801 is inserted into the centering sleeve 201 to couple with the ferrule 801 of the standard connector assembly 800, the hook 401b tightens the SC connector 500 to fix it, and the detector 600 detects the end loss of the SC connector 500 to be tested; replace the pressure plate 300 is the second adapter 402, the FC connector is threadedly connected with the threaded interface 402b, the ferrule 801 is inserted into the centering sleeve 201 to couple with the ferrule 801 of the standard connector assembly 800, and the detector 600 detects the SC to be tested Connector 500 end face loss. The present invention creates connectors to be inspected that are adapted to different specifications, can compress the sleeve at multiple points, protects the detector from being exposed, and also avoids the interference of external natural light on the detector; the whole device is a detachable structure, which is convenient for the inside. The centering components and standard connectors are cleaned and replaced; and the separate design of each component is convenient for processing, production and assembly. At the same time, it solves the problem that the corner position cannot be accurately positioned when the traditional nut pair fixes the interface device.

It should be noted that the above embodiments are only used to illustrate the technical solutions created by the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the invention can be Modification or equivalent replacement of the technical solution does not deviate from the spirit and scope of the technical solution created by the present invention, and should be covered by the scope of the claims created by the present invention.

Claims

An interface board of an optical fiber test instrument, which is characterized in that it includes:

An optical fiber detection interface board (100), a through hole (101) is opened in the middle, and a first detection hole (102) is also opened on the side of the through hole (101); and,

The centering assembly (200) is installed on the upper part of the optical fiber inspection interface board (100) to connect to the movable connector for inspection.
The interface board of an optical fiber testing instrument according to claim 1, wherein the centering assembly (200) comprises:

The centering sleeve (201) arranged inside the through hole (101) is an annular structure with a notch (201a), and the notch (201a) is opposite to the first detection hole (102), A first inner edge platform (103) is opened on the inner surface of the lower end of the through hole (101), and one end of the centering sleeve (201) is inserted into the through hole (101) and the first inner edge platform The upper end surface of (103) is in contact with the upper end surface of the optical fiber detection interface board (100), and the inner diameter of the centering sleeve (201) is equal to the diameter of the connector ferrule, and the first The inner diameter of the inner edge platform (103) is between the inner diameter and the outer diameter of the centering sleeve (201).
The interface board of an optical fiber testing instrument according to claim 2, characterized in that: the centering assembly (200) further comprises:

The centering sleeve (201) is mounted on the fixing member (202) on the optical fiber inspection interface board (100), and the fixing member (202) includes an extension sleeve sleeved on the centering sleeve (201). The fixing sleeve (202a) at the upper part of the outlet end and the fixing plate (202b) fixed on the outer wall surface of the lower end of the fixing sleeve (202a), the fixing sleeve (202a) is provided with a second detection hole (202c) , The second detection hole (202c) communicates with the first detection hole (102), the fixing plate (202b) can be detachably installed on the upper end surface of the optical fiber detection interface board (100), and the fixing sleeve ( The inner surface of the upper end of 202a) is provided with a second inner edge platform (202d), and the inner diameter of the second inner edge platform (202d) is between the inner diameter and the outer diameter of the centering sleeve (201).
The interface board of the optical fiber testing instrument according to claim 3, characterized in that: a positioning boss (104) is further provided on the upper end surface of the first inner edge platform (103), the positioning boss (104) The yin and yang are matched with the notch (201a), and at the same time, the positioning boss (104) does not block the first detection hole (102).
The interface board of an optical fiber testing instrument according to claim 4, further comprising:

A pressing plate (300), which can be detachably arranged on the upper end surface of the optical fiber detection interface board (100), and a first through slot (301) through which the fixing sleeve (202a) passes is opened in the middle of the pressing plate (300) ), the lower end surface of the pressure plate (300) is also provided with a first crimping groove (302), and the groove bottom surface of the first crimping groove (302) is in contact with the upper end surface of the fixing plate (202b) and The two oppress each other.
An interface device of an optical fiber test instrument, which is characterized in that it further includes:

The adapter unit (400), which can be detachably installed on the upper end surface of the optical fiber detection interface board (100), and the adapter unit (400) can at least adapt to the joint of the SC connector (500) or the FC connector ；

A detector (600), which is arranged inside the first detection hole (102) and connected to the optical fiber detection interface board (100); and,

The box (700), the optical fiber detection interface board (100) is arranged on the upper part of the box (700), and the detector (600) is located inside the box (700).
The interface device of an optical fiber testing instrument according to claim 6, characterized in that:

The switching unit (400) at least includes:

The first adapter (401) adapted to the SC connector (500) includes a first connecting plate (401a) that can be detachably installed on the upper end surface of the optical fiber detection interface board (100), and is symmetrically arranged at all The hooks (401b) on both sides of the upper end surface of the first connecting plate (401a), the middle of the first connecting plate (401a) is provided with a second through slot (401a-1) for the fixing sleeve (202a) to pass through A second crimping groove (401a-2) is also opened on the lower end surface of the first connecting plate (401a), and the groove bottom surface of the second crimping groove (401a-2) is connected to the fixing plate (202b). The upper end surface contacts and the two press against each other. The first adapter (401) further includes a guide plate (401c) and a positioning plate (401d) arranged on the upper end surface of the first connecting plate (401a).
The interface device of an optical fiber testing instrument according to claim 6 or 7, characterized in that: the switching unit (400) at least comprises:

The second adapter (402) adapted to the FC type connector can be detachably installed on the upper end surface of the optical fiber detection interface board (100), and the second adapter (402) includes a second connecting board ( 402a), and a threaded interface (402b) provided on the upper end surface of the second connecting plate (402a), the threaded interface (402b) is adapted to the interface of the FC connector, and the middle of the second connecting plate (402a) A third through groove (402a-1) is provided for the fixing sleeve (202a) to pass through, and a third crimping groove (402a-2) is also provided on the lower end surface of the second connecting plate (402a), so The bottom surface of the third crimping groove (402a-2) is in contact with the upper end surface of the fixing plate (202b) and the two press against each other.
The interface device of an optical fiber testing instrument according to claim 8, characterized in that it further comprises a standard connector assembly (800), the ferrule (801) of which is inserted into the through hole (101) and the ferrule (801) The end of) is located at the intersection of the through hole (101) and the first detection hole (102), and is detachably mounted on the lower end surface of the optical fiber detection interface board (100),

The ferrule (801) of the standard connector assembly (800) is also provided with a tail handle (802),

The lower end surface of the optical fiber detection interface board (100) is also provided with an external thread sleeve (105) at a position corresponding to the through hole (101), and the through hole (101) extends to penetrate the external thread sleeve (105), and the nut The gland (106) is threadedly connected with the external thread sleeve (105),

The tail handle (802) is located between the nut gland (106) and the external thread sleeve (105), and the nut gland (106) is provided with the tail handle (802) passing through The hole of the rear handle (802) and the nut gland (106) are also provided with a gasket (803).
The interface device of an optical fiber testing instrument according to claim 9, characterized in that: the outer side of the tail handle (802) is provided with a card slot (802a), and the card slot (802a) is provided with at least one set,

The lower end surface of the outer threaded sleeve (105) is also provided with a positioning block (105a) corresponding to the slot (802a), and at least one set of the positioning block (105a) is provided.