WO2020191645A1

WO2020191645A1 - Light extraction adapter

Info

Publication number: WO2020191645A1
Application number: PCT/CN2019/079806
Authority: WO
Inventors: 吕根良
Original assignee: 南京续点通信科技有限公司
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-10-01
Also published as: TW202036065A; TWI733267B

Abstract

A light extraction adapter, comprising a housing (100) provided with a transparent window (101) thereon, wherein centrally symmetrical engagement hooks (102) are distributed on the periphery of the window (101); and fixing blocks (200), the sides of which are provided with buckle plates (201) corresponding to the engagement hooks (102), wherein the fixing blocks (200) are respectively connected to the corresponding engagement hooks (102) by means of the buckle plates (201) on the sides thereof. By means of the expansion and squeezing of hook bodies of the engagement hooks (102), the fixing blocks (200) are clamped on an adapter body in a twisted manner, such that installation can be carried out quickly and conveniently, without the need for screws, rivets and other fixing members and installation tools; therefore, the production efficiency is high.

Description

Light-taking adapter

Technical field

The invention relates to the technical field of maintenance of optical fiber communication systems, in particular to a light-taking adapter.

Background technique

With the increasing requirements for high-speed information dissemination, optical fiber has become more and more widely used as a high-speed information carrier, and the monitoring of optical fiber connection points has gradually been put on the agenda. Especially in the 5G era, the application of optical fiber lines has become more and more widespread. The number of optical fiber connection points is also increasing rapidly in geometrical levels. The routing management and connection quality management of optical fiber connection points are becoming more and more important. Therefore, the method of detecting overflow light at the optical fiber connection point by the photosensitive element has emerged (patent number: The invention patent of CN104717008B has a detailed description). Most of the fiber optic adapters are installed in the tray on the ODF (Optical Fiber Distribution Frame). There are various installation methods and the installation space is limited. How to install the photosensitive element into the fiber optic adapter conveniently, compactly and reliably to protect the photosensitive element from the outside world Light interference has become a key technical problem that needs to be solved in this field. At the same time, how to install the light guide element into the optical fiber adapter conveniently, compactly and reliably, and export the detection light leaking from the connection point to help the construction personnel find the optical fiber line routing information , Has also become a key technical problem to be solved in this field.

Summary of the invention

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

In view of the above and/or the problems existing in the existing fiber optic adapters, the present invention is proposed.

Therefore, one of the objectives of the present invention is to provide a light extraction adapter, which can facilitate the installation of the photosensitive element on the adapter, which is convenient and quick.

In order to solve the above technical problems, the present invention provides the following technical solutions: a light-trapping adapter, which includes a housing with a transparent window, and center-symmetrical snap hooks are distributed on the periphery of the window; The side of the block is provided with a buckle plate corresponding to the snap hook, and the fixed block is respectively connected with the corresponding snap hook through the buckle plate on the side.

As a preferred solution of the light-trapping adapter of the present invention, the snap hook includes a post fixed on the outer surface of the housing and a hook fixed at the top of the post.

As a preferred solution of the light-trapping adapter of the present invention, wherein: the lower surface of the hook head has a first barb directed inward; the upper surface of the buckle plate has a first barb corresponding to the first barb A second barb, the second barb and the first barb have the same structure and complement each other.

As a preferred solution of the light-trapping adapter of the present invention, when the buckle plate is twisted into the snap hook, the first barb and the second barb are hug each other, and the buckle plate The lower surface is in contact with the outer surface of the adapter body, and the outer end surface of the second barb is attached to the inner surface of the upright post.

As a preferred solution of the light extraction adapter of the present invention, wherein: at least two centrally symmetrical snap hooks are distributed on the periphery of the window; the side of the fixed block is provided with a snap hook One corresponding gusset.

As a preferred solution of the light extraction adapter of the present invention, each hook head symmetrical in the center may be oriented counterclockwise or clockwise.

As a preferred solution of the light extraction adapter of the present invention, a photosensitive element is provided on the lower surface of the fixing block, and the photosensitive element is inserted downward into the window and extends into the housing.

As a preferred solution of the light extraction adapter of the present invention, wherein: the fixing block is made of a light-transmitting material, and the lower surface of the fixing block is provided with a downwardly protruding light guide rod, and the light guide rod is inserted downward into the window and extends To the inside of the shell.

As a preferred solution of the light extraction adapter of the present invention, wherein: the lower end surface of the light guide rod is a spherical light collecting surface.

As a preferred solution of the light extraction adapter of the present invention, wherein: the upper surface of the fixing block has a spherical protrusion facing the light guide rod.

As a preferred solution of the light extraction adapter of the present invention, the two ends of the housing are respectively a first connection end and a second connection end that are adapted to the SC optical fiber connector, and the inside of the housing A fixing plate with a perpendicular insertion direction of the optical fiber connector, a second limiting sleeve is fixed on the outer surface of the fixing plate, and the plane of the inner side of the fixing plate passes through the central axis of the window.

As a preferred solution of the light extraction adapter of the present invention, it further includes a sliding assembly; the sliding assembly includes a slider capable of longitudinally sliding inside the first connecting end, and an outer surface of the slider A first limit sleeve that is symmetrical to the second limit sleeve and a first pull hook on both sides of the first limit sleeve are fixed, and the inner side of the slider is fixed with the first pull hook. Symmetric second hook; the fixing plate has openings corresponding to the second hook on both lateral sides.

As a preferred solution of the light extraction adapter of the present invention, when the slider is in contact with the fixed plate, the second hook passes through the through hole and points in the direction of the second connecting end, The first hook points to the direction of the first connecting end.

As a preferred solution of the light-trapping adapter of the present invention, wherein: first hooks are provided on both lateral edges of the slider, and the inner side wall of the housing is provided with a hook that fits with the undercut The first mating hook; the fixed plate is butted with the slider, and the first hook and the first mating hook are buckled with each other, so that the first limit sleeve and the second limit sleeve The internal passages are facing each other and connected to form a combined passage.

As a preferred solution of the light-trapping adapter of the present invention, wherein: the inner side of the sliding block has a groove fitted to the fixing plate, so that two sides of the groove are formed with protrusions, and the wear The mouth is fitted to the protrusion.

As a preferred solution of the light-trapping adapter of the present invention, a second hook is provided on the inner side of the protrusion, and both sides of the fixing plate are provided with second hooks that fit with the second hooks. The second mating hook; when the fixing plate is embedded in the groove, the second hook and the second mating hook are buckled with each other.

As a preferred solution of the light extraction adapter of the present invention, wherein: the fixing plate is symmetrically provided with a hollow structure corresponding to the second mating hook in the lateral direction, so that the outer frame of the hollow structure forms a strip shape Elastic rib, the second matching hook is located on the outer edge of the strip elastic rib.

As a preferred solution of the light extraction adapter of the present invention, wherein: the slider and the fixed plate have semi-cylindrical channels corresponding to each other, and after the two are docked, the semi-cylindrical channels of the two can form a The accommodating channel of the window, the accommodating channel communicates with the combined channel.

As a preferred solution of the light-trapping adapter of the present invention, it further includes a ceramic sleeve; both ends of the ceramic sleeve are inserted into the first limiting sleeve and the second limiting sleeve, respectively.

The beneficial effects of the present invention: the present invention realizes the positioning and packaging of the light extraction component on the optical fiber adapter by twisting the buckle plate on the fixing block and the snap hook on the optical fiber adapter. This connection method uses the elastic expansion and extrusion of the hook body to twist and clamp the fixing block and its light extraction parts on the adapter body. It can be installed quickly and conveniently without screws, rivets and other fixing parts and installation tools, and has high production efficiency. .

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, without creative labor, other drawings can be obtained based on these drawings. among them:

Fig. 1 is a structural diagram of a fixing block and a housing in the first embodiment of the present invention.

Fig. 2 is a schematic diagram of the twisting direction of the gusset plate in the first embodiment of the present invention.

Fig. 3 is a schematic diagram of two embodiments of connecting the gusset plate and the snap hook in the first embodiment of the present invention.

4 is an assembly diagram of the overall structure and a detailed view of its partial structure when the light-trapping component is a photosensitive element in the second embodiment of the present invention.

Fig. 5 is an exploded view and a detailed view of its partial structure when the light-trapping component is a photosensitive element in the second embodiment of the present invention.

Fig. 6 is a schematic diagram of the connection between the gusset plate and the snap hook in the second embodiment of the present invention.

Fig. 7 is a structural diagram of a fixing block adapted to a photosensitive element in the second embodiment of the present invention.

FIG. 8 is an assembly diagram of the overall structure and a detailed view of the partial structure when the light-trapping component is a light guide column in the second embodiment of the present invention.

Fig. 9 is an exploded view and a detailed view of its partial structure when the light-trapping component is a light-guiding rod in the second embodiment of the present invention.

FIG. 10 is a structural diagram of a light guide column in the second embodiment of the present invention.

Fig. 11 is an exploded view of the light extraction adapter in the third embodiment of the present invention.

Figure 12 is a structural view of the inner side of the fixing plate in the third embodiment of the present invention.

Fig. 13 is a structural view of the outer side of the fixing plate in the third embodiment of the present invention.

Figure 14 is a side view of the light extraction adapter and a cross-sectional view of the butt joint between the slider and the fixed plate in the third embodiment of the present invention.

Fig. 15 is an internal structure diagram of the first connecting end of the housing in the fourth embodiment of the present invention.

Fig. 16 is an internal structure diagram of the second connecting end of the housing in the fourth embodiment of the present invention.

Fig. 17 is a structural diagram of a sliding assembly in a fourth embodiment of the present invention.

18 is a side view, a cross-sectional view and a detailed view of the partial structure of the light extraction adapter in the fourth embodiment of the present invention.

detailed description

In order to make the above-mentioned objectives, features and advantages of the present invention more obvious and understandable, the specific embodiments of 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 present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do so without departing from the connotation of the present invention. Similar promotion, therefore, the present 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 present 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.

Example 1

1 to 3, which is the first embodiment of the present invention, this embodiment provides a light extraction adapter, the light extraction adapter can be installed on the light extraction component, used to extract the fiber connection point from the inside of the adapter Of overflow light.

The light extraction adapter includes an external housing 100, which is the housing of the light extraction adapter. A transparent window 101 is provided on the side of the housing 100. The window 101 is used to install the light extraction component and fits the structure of the light extraction component. . In the present invention, the window 101 is located at the middle position of the outer surface of the casing 100 and communicates with the internal cavity of the casing 100 and the external space.

When the two ends of the housing 100 are respectively plugged with optical fiber connectors, the two optical fiber connectors can be butted at an intermediate position inside the housing 100, and the butting surfaces of the ferrules at both ends are the fiber connection points. Therefore, the optical fiber splice point is exposed directly under the window 101 and directly opposite to it. Since the light extraction component can be installed in the window 101, the light extraction component can receive the overflow light at the optical fiber connection point (generated by incomplete coupling).

In order to realize the installation and fixation of the light extraction component on the light extraction adapter, the light extraction adapter of the present invention further includes a fixing block 200.

Specifically, at least two clamping hooks 102 with symmetric centers are distributed around the periphery of the window 101. Preferably, in this embodiment, two centrally symmetrical snap hooks 102 are distributed on the periphery of the window 101, and both are fixed on the outer surface of the housing 100. The snap hook 102 may be in the shape of a hook with a hook head at the upper end.

The side of the fixing block 200 is provided with a gusset plate 201 corresponding to the snap hook 102, and the fixed block 200 is connected to the corresponding snap hook 102 through the gusset plate 201 on its side, that is, each snap plate is rotated 201 is twisted into the hook of the snap hook 102, so that the fixing block 200 is fixed on the outer surface of the housing 100. The above-mentioned light extraction component may use electronic components such as photodiodes, which are fixed at the lower part of the fixed block 200, so it can be installed on the housing 100 along with the fixed block 200. At the same time, the lower end of the light extraction component can be inserted into the window 101. To receive overflow light.

In this embodiment, the connection between the gusset 201 and the snap hook 102 can adopt the following implementations:

1. The buckle plate 201 is strip-shaped, and its cross-sectional profile fits into the inner structure of the hook of the snap hook 102. Therefore, the buckle plate 201 can be twisted into the hook of the snap hook 102 to realize the combination of the two and pass The friction of the contact surface prevents the gusset plate 201 from detaching;

2. Based on the twisting operation of mode 1, the structural form of the gusset 201 is the same as the inner profile of the hook of the snap hook 102, but the size is slightly larger than the inner profile of the hook of the snap hook 102, and the hook of the snap hook 102 The bottom surface is flat, so it can achieve interference fit after twisting in to prevent loosening;

3. Based on the twisting operation of mode 1, the lower surface of the hook of the snap hook 102 has a concave-convex corrugated shape, and the upper surface of the gusset plate 201 has a complementary concave-convex structure. Therefore, the structure between the two is Realize tight binding.

Example 2

4-10, this is the second embodiment of the present invention. This embodiment is based on Embodiment 1, and differs from Embodiment 1 in the following: the specific structures of the "snap hook 102" and the "gusset 201" and The connection between the two is as follows-

The snap hook 102 includes a vertical post 102a fixed to the outer surface of the housing 100 and a hook 102b fixed to the top end of the post 102a. Wherein, the upper surface of the hook head 102b may be a flat surface, the lower surface has a first barb 102b-1 (directed inward), and the lower surface of the first barb 102b-1 has a tendency to gradually bulge from the outside to the inside, forming The slope surface (here "inside" refers to the direction in which the outer end of the hook head 102b points to the column 102a), and the inner edge of the slope surface forms a step with the lower surface of the hook head 102b, which is the first step described in the present invention. One barb 102b-1.

The upper surface of the gusset 201 has a second barb 201a corresponding to the first barb 102b-1. Preferably, the second barb 201a and the first barb 102b-1 have the same structure and complement each other. When the buckle plate 201 rotates and twists into the snap hook 102, the first barb 102b-1 and the second barb 201a are locked with each other to form a snap connection, and the lower surface of the buckle plate 201 and the outer surface of the housing 100 The side surfaces are in contact, and at the same time, the outer end surface 201a-1 of the second barb 201a is attached to the inner surface of the column 102a. In the present invention, the first barb 102b-1 and the second barb 201a are hooked to each other, which can ensure that the fixing block 200 cannot be loosened, and prevent the locking hook from deforming and loosening during long-term use. It should be noted that the snap hook 102 is made of a material with a certain elastic deformation ability, and has a lateral elastic deformation space, so it can ensure that the buckle plate 201 can be detachably twisted in and twisted out.

It can be seen from the above that the two snap hooks 102 are centrally symmetrically distributed around the periphery of the window 101, but the orientation of the hook head 102b is not specified. In fact, each hook head 102b of the present invention can be oriented counterclockwise or clockwise. Towards.

In the present invention, the function of the fixing block 200 is to install and fix the light-trapping component. The light-trapping component here can be a photoelectric sensor or a light-guiding light-transmitting medium, which specifically includes the following two embodiments:

1. A photosensitive element 300 is used as the light-trapping component.

The photosensitive element 300 in this embodiment may be a photodiode, which has a lead at its tail end, and the lead is connected to a connecting line or a flexible circuit board.

The photosensitive element 300 is installed on the lower surface of the fixed block 200, inserted downward into the window 101 and extended to the inside of the housing 100, and can receive the overflow light from the optical fiber splice point for later optical fiber routing and optical fiber line fault finding ( This is the prior art and will not be repeated here).

Specifically, the lower surface of the fixing block 200 has a fixing groove 202. The size and contour of the fixing groove 202 are matched to the photosensitive element 300. Therefore, the upper end of the photosensitive element 300 is embedded and fixed in the fixing groove 202, and the lead wire at the upper end of the photosensitive element 300 It passes through the fixing block 200 and is connected to an external connection line or flexible circuit board. Obviously, the fixing block 200 also has a wiring hole 203 fitted to the lead, and the wiring hole 203 is located in the range of the fixing groove 202.

Further, the method of fixing the photosensitive element 300 in the fixing groove 202 may be simply by interference fit or fixing by glue. The fixing groove 202 and the window 101 are directly opposite to each other, and the cross sections of both are circular, and the center lines are on the same straight line.

In the present invention, the fixing block 200 not only has the function of installing and fixing the photosensitive element 300, but also can shield the photosensitive element 300 to ensure that the photosensitive element 300 installed on the housing 100 is not interfered by external light, thereby ensuring the photosensitive element 300 working reliability.

2. The light guide 204 is adopted as the light extraction component.

Specifically, the lower surface of the fixing block 200 has a light guide post 204 protruding downward. The light guide post 204 has a cylindrical structure, which is inserted into the window 101 downward and can extend into the inside of the housing 100. The fixing block 200 in this embodiment adopts a light-transmitting material as a whole, such as acrylic and other light-transmitting materials. Therefore, it can be ensured that when the lower end of the light guide column 204 receives the overflow light at the fiber connection point, it can be transmitted to the external space, which is convenient Perceived by the human eye.

Further, the lower end surface of the light guide post 204 is a spherical light collecting surface 204 a, and the upper surface of the fixing block 200 has a spherical protrusion 205 facing the light guide post 204. The overflow light from the optical fiber connection point can directly enter the light-collecting surface 204a, be conducted in the light-guiding column 204, and finally spread out from the spherical protrusion 205 on the top surface of the fixed block 200, which is detected by the human eye and assists in the optical fiber routing search. The function is convenient and effective. Therefore, the setting of the light guide 204 is mainly used for the routing search of optical fiber lines, or the search for faulty connection points (connection points with strong light leakage), and can also be used for routing verification in the remediation of the computer room. Its production cost is low, and it is easy to install and popularize. , Can help line attendants improve the efficiency of optical fiber line troubleshooting and machine room remediation, which is conducive to strengthening the maintenance and management of each routing port in the machine room.

Since the photosensitive element 300 or the light guide post 204 can be selectively inserted into the window 101 to receive the overflow light, this method is easy to industrialized production and assembly. In the application site of the computer room, the fixed block containing the light guide post can be directly replaced with a fixed groove The fixed block, thus realizing the direct upgrade of the search method: that is, the manual search method of optical fiber connection point leakage can be upgraded to the intelligent photosensitive element automatic routing search method, without the need to replace the entire optical fiber adapter, and without disconnecting the optical fiber chain It saves upgrade costs and time, and has a huge market prospect.

Example 3

Referring to Figures 11-14, this is the third embodiment of the present invention. This embodiment is based on Embodiment 2, but differs from Embodiment 2 in that the light extraction adapter is an adapter that can be assembled, and it also includes a sliding assembly 400 It can be assembled into the inside of the housing 100 to realize the packaging of the ceramic sleeve.

Specifically, the two ends of the housing 100 are a first connection end 103 and a second connection end 104, respectively. Both the first connection end 103 and the second connection end 104 are ports that are compatible with SC fiber optic connectors, and the ports are Can directly plug SC fiber optic connector. Preferably, the first connection end 103 and the second connection end 104 are the same as the two ends of the existing SC fiber optic adapter housing. The SC fiber connectors inserted at both ends of the housing 100 can be connected at the middle position in the housing 100.

A fixing plate 105 is vertically arranged inside the housing 100, that is, the fixing plate 105 is perpendicular to the insertion direction of the SC fiber connector. The present invention assumes that the inner side surface of the fixing plate 105 is the first surface A and the outer side surface is the second surface B, then the first surface A is facing the first connecting end 103 and the second surface B is facing the second connecting end 104. Wherein, the first surface A is located in the middle of the housing 100, and its plane passes through the central axis of the window 101, and the second surface B is located in the cavity of the second connecting end 104. A second limiting sleeve 105a facing the outer port of the second connecting end 104 is vertically fixed on the second surface B.

The second limiting sleeve 105 a is a longitudinal hollow sleeve with a longitudinal channel with a circular cross section inside, and the channel penetrates the fixing plate 105.

The sliding assembly 400 is inserted from the first connecting end 103 as a whole, and includes a sliding block 401 capable of longitudinally sliding inside the first connecting end 103. The outline of the outer edge of the slider 401 is matched with the inner side wall of the first connecting end 103, and the slider 401 can also be in contact with the first surface A of the fixing plate 105 to achieve docking and fixing.

The present invention sets that the inner surface of the slider 401 is the third surface C, and the outer surface is the fourth surface D. Wherein, the third surface C faces inward and is used for butting with the first surface A of the fixing plate 105; the fourth surface D faces outward, and the fourth surface D is fixed with a first surface symmetrical to the second limiting sleeve 105a. The limiting sleeve 402, the first limiting sleeve 402 and the second limiting sleeve 105a have the same structure, and will not be repeated here.

A pair of first pull hooks 403 are symmetrically provided on both lateral sides of the first limit sleeve 402. After the sliding assembly 400 is fixed inside the housing 100, the first pull hooks 403 can perform a pair of SC fiber connectors inserted from the first connecting end 103. Therefore, the structure of the first hook 403 fits the two side structures of the existing SC fiber optic connector. In addition, a second pull hook 404 that is symmetrical to the first pull hook 403 is fixed on the third surface C. Both have the same structure. The second pull hook 404 can be inserted into the second connecting end 104 from the first connecting end 103 and can be The SC optical fiber connector inserted from the second connecting end 104 is fixed. Therefore, the fixing plate 105 has holes 105b corresponding to the second hook 404 on both lateral sides of the fixing plate 105.

When the slider 401 is in contact with the fixed plate 105 but is connected, the second hook 404 passes through the corresponding opening 105b, extends into the cavity of the second connecting end 104, and points toward the outer port of the second connecting end 104; and The first hook 403 is located inside the cavity of the first connecting end 103 and points toward the outer port of the first connecting end 103. At the same time, the butt joint of the sliding block 401 and the fixed plate 105 can make the internal passages of the first limiting sleeve 402 and the second limiting sleeve 105a face each other and communicate with each other, forming a combined channel T.

The light extraction adapter of the present invention also includes a ceramic sleeve 500. The ceramic sleeve 500 can be encapsulated in the combined channel T formed by the butting of the first limiting sleeve 402 and the second limiting sleeve 105a, and its outer diameter is matched with the inner diameter of the combined channel T.

In order to prevent unnecessary longitudinal displacement of the ceramic sleeve 500 in the combined channel T, and even slip out of the outer port of the first limit sleeve 402 or the second limit sleeve 105a, the present invention sets: the first limit sleeve 402 The outer ports of the second limiting sleeve 105a and the second limiting sleeve 105a respectively have a first limiting ring 402a and a second limiting ring 105a-1, both of which are ring structures.

The inner diameter of the first limiting ring 402a is smaller than the inner diameter of the first limiting sleeve 402, and the inner diameter of the second limiting ring 105a-1 is smaller than the inner diameter of the second limiting sleeve 105a. Therefore, the first limiting ring 402a and the second limiting sleeve 105a The positioning ring 105a-1 forms a limit at both ends of the ceramic sleeve 500 to prevent it from slipping out.

In practice, the SC fiber optic connectors inserted at both ends of the adapter housing 100 can squeeze each other during coupling (caused by the compression of the spring in the SC fiber optic connector), but are restricted by the first hook 403 and the second hook 404 Can maintain close butt. According to the reaction of the force, the SC optical fiber connectors at both ends also have a tendency to push each other and pull the first hook 403 and the second hook 404, but since the first hook 403 and the second hook 404 are both fixed on the slider 401, It has an integrated structure, and the housing 100 of the adapter is also an integrated structure. Therefore, there is no problem that the adapter or the internal structure is pulled and cracked. At the same time, the split connection of the housing 100 and the sliding assembly 400 facilitates the packaging of the ceramic sleeve 500. One end of the ceramic sleeve 500 can be inserted into the second limiting sleeve 105a, and then the sliding assembly 400 can be slid into the Inside a connecting end 103, the other end of the ceramic sleeve 500 can be inserted into the first limiting sleeve 402, and the process of encapsulating the ceramic sleeve 500 in the combined channel T is finally realized.

According to the second embodiment, since the light extraction part is installed in the window 101 of the light extraction adapter, and the lower end of the light extraction part can extend to the inside of the housing 100 to receive the overflow light, it is necessary to ensure that the slider 401 and the fixing plate 105 are The installation and setting of the light extraction components are not blocked during the docking. In the present invention, the slider 401 and the fixed plate 105 are provided with corresponding semi-cylindrical channels, and after the two are docked, the semi-cylindrical channels of the two can form a facing window. The accommodating channel of 101, the accommodating channel is connected to the combined channel T, and the lower end of the light extraction component can be inserted into the accommodating channel.

Correspondingly, the ceramic sleeve 500 has a longitudinal slit 501 facing the accommodating channel. Therefore, after the light-trapping component passes through the window 101 and the accommodating channel from top to bottom, it can face the ceramic sleeve. 500 at the seam 501. If the two ends of the housing 100 are respectively plugged with SC fiber connectors, the ferrules of the two SC fiber connectors can be inserted into the ceramic sleeve 500 from both ends of the ceramic sleeve 500, and are located in the middle of the ceramic sleeve 500 Butting, and the butting surface of the ferrule can be exposed to the receiving channel and the window 101 through the slit 501. Therefore, the overflow light leaking from the butting surface of the ceramic ferrule can pass through the slit 501 and be received by the light-trapping component facing the butting surface.

In addition, the present invention realizes the docking and fixing of the sliding block 401 and the fixing plate 105 through the assemblable housing 100 and the sliding assembly 400 to form an accommodation channel for accommodating the light extraction component. The advantage of such an arrangement is: The semi-cylindrical channel on the plate 105 is an integral structure with the housing 100. Therefore, after the light extraction component is installed in the window 101, the semi-cylindrical channel on the fixed plate 105 can limit and block the light extraction component in this direction. Even if the sliding assembly 400 is inserted into the first connecting end 103 or the SC optical fiber connector is inserted, the fixed plate 105 will not be displaced. Therefore, it is ensured that the light extraction component attached to it will not be displaced and offset. Measurement accuracy at work. In addition, even if the sliding assembly 400 is forced to move, it will not pull the light extraction component, which ensures the detection accuracy of the light extraction component and ensures the reliability and stability of the installation of the light extraction component.

Example 4

15 to 18, this is the fourth embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that this embodiment solves the problem of fixing the slider 401 and the fixing plate 105 after butting.

Specifically, on both lateral edges of the slider 401 (the edges transversely perpendicular to the inner side wall of the housing 100) are provided with first hooks 401c facing the fourth surface D direction, and the first hooks 401c correspond to the third surface There is a slope on one side in the direction C, which has a tendency to gradually bulge from the third surface C to the fourth surface D, and forms a step or cliff shape at the highest point of the bulge (the surface It is a step surface or a cliff surface), which forms the first hook 401c of the present invention. In addition, the inner side wall of the housing 100 is provided with a first mating hook 106 that is fitted to the first hook 401c. The slope of the first mating hook 106 is opposite to the first hook 401c, and the structure can be the same . Preferably, the first hook 401c is in the shape of an inclined strip, which has a certain lateral elastic deformation capability.

When assembling, when the sliding assembly 400 is inserted into the housing 100, the slope surface of the first hook 401c and the slope surface of the first mating hook 106 contact and squeeze each other. If you continue to push, the first hook 401c becomes lateral Bending elastic deformation. Subsequently, when the slider 401 slides inward to "the step surface (or the cliff surface) of the first hook 401c and the first mating hook 106 contact with each other", the sliding assembly 400 can pass through the first hook 401c and the first hook 401c. Cooperate with the mutual buckling of the hook 106 to achieve fixed installation, and at this time, the fixing plate 105 is butted with the slider 401 to form a tight fixation and combination. At the same time, the internal passages of the first limit sleeve 402 and the second limit sleeve 105a At this time, they are facing each other and connected to form a combined channel T.

Further, the third surface C of the slider 401 is also recessed with a groove 401a that fits with the fixing plate 105, so that a protrusion 401b can be formed on both sides of the groove 401a, and the inner frame of the opening 105b is fitted to the protrusion The structure of 401b. Therefore, when the fixing plate 105 is butted with the slider 401, the fixing plate 105 can be inserted into the groove 401a, and the protrusions 401b on both sides of the groove 401a can also be inserted into the corresponding opening 105b to form a complementary fit. The first hook 401c mentioned above can be arranged on the outer surface of the protrusion 401b, and when the fixing plate 105 is embedded in the groove 401a, the first hook 401c and the first mating hook 106 are buckled with each other to realize the slider Fixing and combining of 401 and fixed plate 105 after docking.

In this embodiment, the interlocking of the first hook 401c and the first mating hook 106 makes the SC fiber connector inserted from the second connecting end 104 not squeeze during the process of inserting the SC fiber connector. The SC optical fiber connector of the first connecting end 103 has been inserted, so that the sliding assembly 400 is separated from the housing 100.

However, if only a pair of first hooks 401c for buckling with the first mating hooks 106 are provided on the outer surface of the protrusion 401b, then the sliding assembly 400 may be unstable due to uneven lateral force distribution. Sex. At the same time, only the first hook 401c is often difficult to counteract the thrust of the SC fiber connector from the second connecting end 104. Therefore, the present invention is provided with a second hook 401d on the inner surface of the protrusion 401b, and the fixing plate There are second mating hooks 105c fitted to the second hooks 401d on both sides of 105. At this time, the inner side of the protrusion 401b and the two sides of the fixing plate 105 are kept at a distance to allow the second hooks. The matching space between the 401d and the second matching hook 105c. The orientation of the second hook 401d is the same as that of the first hook 401c, and the two are exactly distributed on both sides of the protrusion 401b. The second mating hook 105c may have the same structure as the second hook 401d, but the orientation is opposite, which will not be repeated here (refer to the snap fit between the first hook 401c and the first mating hook 106).

Further, the fixing plate 105 is symmetrically provided with a hollow structure 105d corresponding to the second mating hook 105c in the lateral direction. Each hollow structure 105d is located at the inner position of the corresponding second mating hook 105c and separated from it by a certain width. Therefore, this makes the outer frame of the hollow structure 105d form a vertical strip elastic rib 105e, and the second matching hook 105c is located On the outer edge of the strip elastic rib 105e. The strip elastic rib 105e has a certain lateral elastic deformation ability. Therefore, when the sliding assembly 400 is inserted into the housing 100, the second hook 401d can squeeze the slope of the second mating hook 105c and make the strip shape The elastic rib 105e deforms laterally. When the second hook 401d slides over the second mating hook 105c and forms a buckle, the strip-shaped elastic rib 105e can be elastically reset and form a limit for the second hook 401d.

According to the present invention, when the fixing plate 105 is inserted into the groove 401a, the first hook 401c can be buckled with the first mating hook 106, and the second hook 401d can also be mated with the second mating hook 105c. The mutual buckling, that is, the buckling connection of the two sides of the protrusion 401b occurs simultaneously.

From the above, it can be seen that since the first surface A is located exactly in the middle position of the housing 100, the butt joint between the slider 401 and the fixed plate 105 is located in the middle position of the housing 100.

In the present invention, one end of the ceramic sleeve 500 can be inserted into the second limiting sleeve 105a first, and then the sliding assembly 400 is inserted into the housing 100 from the first connecting end 103, so that the slider 401 and the fixed plate 105 are butted, and finally passed The interlocking of the first hook 401c and the first mating hook 106 and the interlocking of the second hook 401d and the second mating hook 105c with each other encapsulate the ceramic sleeve 500 in the combined channel T.

It should be noted that the above embodiments are only used to illustrate the technical solutions of 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 technical solutions of the present invention can be implemented Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention should be covered by the scope of the claims of the present invention.

Claims

A light extraction adapter, characterized in that it includes,

A housing (100) having a transparent window (101) thereon, and a center-symmetrical snap hook (102) is distributed on the periphery of the window (101); and,

The fixing block (200) is provided with a gusset (201) corresponding to the snap hook (102) on its side, and the fixing block (200) is respectively connected with the corresponding card through the gusset (201) on its side The hook (102) is connected.
The light extraction adapter according to claim 1, characterized in that: the snap hook (102) comprises a post (102a) fixed on the outer surface of the housing (100) and a post (102a) fixed to the post (102a) The top hook (102b).
The light extraction adapter according to claim 2, characterized in that: the lower surface of the hook head (102b) has a first barb (102b-1) facing inward;

The upper surface of the gusset (201) has a second barb (201a) corresponding to the first barb (102b-1), the second barb (201a) and the first barb ( 102b-1) The structure is the same and complementary.
The light extraction adapter according to claim 3, characterized in that: when the gusset (201) is twisted into the snap hook (102), the first barb (102b-1) and the second barb The hooks (201a) hug each other, and the lower surface of the buckle plate (201) is in contact with the outer surface of the adapter body (100), and the outer end surface (201a-1) of the second barb (201a) fits On the inner side of the column (102a).
The light extraction adapter according to any one of claims 1 to 4, characterized in that: at least two centrally symmetrical snap hooks (102) are distributed on the periphery of the window (101);

The side of the fixing block (200) is provided with a buckle plate (201) corresponding to the snap hook (102) one by one.
The light extraction adapter according to claim 5, characterized in that: each hook head (102b) symmetrical in the center can be oriented counterclockwise or clockwise.
The light extraction adapter according to any one of claims 1 to 4 or 6, characterized in that: the lower surface of the fixing block (200) is provided with a photosensitive element (300), and the photosensitive element (300) is inserted downwardly The window (101) extends into the housing (100).
The light extraction adapter according to any one of claims 1 to 4 or 6, characterized in that: the fixing block (200) is made of a light-transmitting material, and the lower surface of the fixing block (200) has a downwardly convex light guide column (204), and the The light guide rod (204) is inserted downward into the window (101) and extends into the housing (100).
The light extraction adapter according to claim 8, characterized in that: the lower end surface of the light guide rod (204) is a spherical light collecting surface (204a).
The light extraction adapter according to claim 8, wherein the upper surface of the fixing block (200) has a spherical protrusion (205) facing the light guide post (204).
The light extraction adapter according to any one of claims 1 to 4, 6, 9 or 10, characterized in that: the two ends of the housing (100) are respectively the first connecting ends ( 103) and the second connecting end (104), and a fixing plate (105) perpendicular to the insertion direction of the SC optical fiber connector is arranged inside, and a second limiting sleeve is fixed on the outer surface of the fixing plate (105) (105a), the plane where the inner side of the fixing plate (105) is located passes through the central axis of the window (101).
The light extraction adapter according to claim 11, characterized in that it further comprises a sliding component (400);

The sliding assembly (400) includes a sliding block (401) capable of longitudinally sliding inside the first connecting end (103), and the outer surface of the sliding block (401) is fixed with the second limiter The symmetrical first limit sleeve (402) of the sleeve (105a) and the first pull hooks (403) located on both sides of the first limit sleeve (402), and the inner surface of the slider (401) is fixed with The first pull hook (403) and the second pull hook (404) that are symmetrical to each other;

The fixing plate (105) has holes (105b) corresponding to the second hook (404) on both lateral sides of the fixing plate (105).
The light extraction adapter according to claim 12, characterized in that: when the slider (401) is in contact with the fixing plate (105), the second hook (404) passes through the opening (105b) , And point to the direction of the second connecting end (104), and the first hook (403) points to the direction of the first connecting end (103).
The light extraction adapter according to claim 12 or 13, characterized in that: the sliding block (401) is provided with first hooks (401c) on both lateral edges of the sliding block (401), and the inner side wall of the housing (100) A first matching hook (106) fitted to the undercut (401c) is provided on it;

The fixing plate (105) is butted with the sliding block (401), and the first hook (401c) and the first matching hook (106) are buckled with each other, so that the first limit sleeve The internal passages of (402) and the second limiting sleeve (105a) are facing each other and communicated to form a combined passage (T).
The light extraction adapter according to claim 14, characterized in that: the inner side of the sliding block (401) has a groove (401a) fitted to the fixing plate (105), so that the groove (401a) A protrusion (401b) is formed on both sides of ), and the through hole (105b) is fitted to the protrusion (401b).
The light extraction adapter according to claim 15, characterized in that: the inner side of the protrusion (401b) is provided with a second hook (401d), and the fixing plate (105) is provided with A second mating hook (105c) fitted to the second hook (401d);

When the fixing plate (105) is embedded in the groove (401a), the second hook (401d) and the second mating hook (105c) are buckled with each other.
The light extraction adapter according to claim 16, characterized in that the fixing plate (105) is symmetrically provided with a hollow structure (105d) corresponding to the second mating hook (105c) in the lateral direction, so that the The outer frame of the hollow structure (105d) forms a strip-shaped elastic rib (105e), and the second matching hook (105c) is located on the outer edge of the strip-shaped elastic rib (105e).
The light extraction adapter according to any one of claims 12, 13, 15 to 17, characterized in that: the slider (401) and the fixed plate (105) have semi-cylindrical channels corresponding to each other, and after the two are connected , The two semi-cylindrical channels can form an accommodation channel facing the window (101), and the accommodation channel is in communication with the combined channel (T).
The light extraction adapter according to any one of claims 12, 13, or 15 to 17, characterized in that it further comprises a ceramic sleeve (500);

The two ends of the ceramic sleeve (500) are respectively inserted into the inside of the first limiting sleeve (402) and the second limiting sleeve (105a).