WO2015172286A1

WO2015172286A1 - Optical fiber adapter

Info

Publication number: WO2015172286A1
Application number: PCT/CN2014/077267
Authority: WO
Inventors: 金勋
Original assignee: 大豪信息技术（威海）有限公司
Priority date: 2014-05-12
Filing date: 2014-05-12
Publication date: 2015-11-19
Also published as: KR101852049B1; CN107155308A; KR20170059428A

Abstract

An optical fiber adapter comprises an adapter base (1) and an adapter plug (2, 2') capable of being mutually inserted and fixed to the adapter base (1). The edge (21, 22) of the adapter plug (2, 2') is provided with an elastic component (3). The elastic component (3) is provided with a hooked portion (34). A slot (111b, 121b) corresponding to the hooked portion (34) is formed in the adapter base (1). The elastic component (3) is pivotally connected to the adapter plug (2, 2'), and after the elastic component (3) is pressed to rotate relative to the adapter plug (2, 2'), the elastic component (3) can automatically return and make the hooked portion (34) extend into the slot (111b, 121b), so as to fix the adapter base (1) and the adapter plug (2, 2'). The optical fiber adapter achieves the positioning function and the function of completing assembly at a time, has low requirements on parts machining, and is easy to massively produce, and mild wear does not affect the use effect of the optical fiber adapter.

Description

Fiber Optic Adapter Technology

The present invention relates to the field of optical fiber adapter technologies, and in particular, to an optical fiber adapter having a snap-fit connection structure with an automatic return function.

Background technique

Fiber Optic Adapter (also known as fiber optic flange), is an aligned connection component in fiber transmission, and can be inserted into fiber connector of different interface types at both ends to realize FC, SC, ST, LC, MTRJ, Conversion between different interfaces such as MPO and E2000 is widely used in optical distribution frames (ODF), optical fiber communication devices, and instruments.

Referring to FIG. 1, Chinese Patent No. 200410089680.5 discloses an "optical connector adapter having a joint portion movable by using a slit", the optical connector adapter including a first housing member 111 and an insert member 121, wherein After the housing member 111 and the insertion member 121 are inserted, the edges of the two are fixed by manually rotating the locking lever 125 so that the hook 125a attached to the locking lever 125 is hung on the protruding shaft corresponding thereto. The part 113n is on. However, the above fixing method has the following drawbacks:

1. The above structure utilizes the friction and elastic deformation of the hook 125a and the protruding shaft portion 113n during the rotation to locate the workpiece. The precision of the part processing is required to be high, and the mass production is difficult. Once the processing accuracy is not met, the use will be affected. The effect is even difficult to hang and fix, which makes the processing of the product more difficult;

2. The long-term friction of the protruding shaft portion 113n in the above-mentioned fitting causes wear, which causes the fixing effect to be deteriorated after wear, and the product life is limited;

3. During use, due to the directionality of the hook, the locking operation direction during positioning is very limited, and the first housing member 111 and the insertion member 121 can only be connected in a specific direction;

4. The above-mentioned one-way hook structure makes the single-sided force when the hook is fixed and disassembled, and the user's use comfort is not high, and the work efficiency is affected.

Summary of the invention

The present invention provides a fiber optic adapter having a snap-fit connection structure with an automatic return function to solve the above-mentioned drawbacks in the prior art when the above-mentioned fiber optic adapter is fixed.

The technical solution of the present invention is as follows:

A fiber optic adapter includes an adapter base and an adapter plug, and the adapter base and the adapter plug are mutually Insertion and fixation; among them,

The adapter plug is provided with an elastic member at an edge thereof, the elastic member has a hook portion, the adapter seat is provided with a card slot corresponding to the hook portion, and the elastic member is pivotally connected with the adapter plug, and The elastic member is automatically returned after being rotated relative to the adapter plug, and the hook portion is inserted into the card slot to fix the adapter base and the adapter plug.

Compared with the prior art, the beneficial effects of the present invention are as follows:

First, the optical fiber adapter of the present invention is provided with an elastic member, and the release of the elastic member is achieved by the rebounding action of the elastic member.

The automatic adapter and the fixed connection of the rear adapter seat and the adapter plug edge realize the function of positioning and one-time assembly in place; Second, the optical fiber adapter of the invention has the adapter spring piece, the adapter shaft, the adapter torsion spring and the adapter seat and the adapter book

The FC plug is easy to process, the precision is not high, and the product is easy to mass produce;

Third, the side fixing structure of the optical fiber adapter provided by the invention is not easy to be worn and damaged, and slight wear does not affect the use effect;

Fourth, the side fixing structure of the optical fiber adapter provided by the invention is symmetrically arranged on the opposite side, so there is no specific operation direction, and two directions can be used for positioning, which is more convenient and simple to use;

Fifth, the side fixing structure of the optical fiber adapter provided by the invention is symmetrically arranged on the opposite side, and the two-sided force is applied during operation, the user has high comfort and high work efficiency.

Of course, implementing any of the products of the present invention does not necessarily require all of the advantages described above to be achieved at the same time.

DRAWINGS

1 is a schematic view showing the structure and connection of a fiber optic adapter in the prior art;

2 is a schematic structural view of a fiber optic adapter according to Embodiment 1 of the present invention;

3 is a first schematic structural diagram of a connection structure of a spring piece of a fiber optic adapter according to Embodiment 1 of the present invention;

4 is a second schematic structural diagram of a connection structure of a spring piece of a fiber optic adapter according to Embodiment 1 of the present invention;

5 is a schematic diagram of a state after the optical fiber adapter of Embodiment 1 of the present invention is assembled;

6 is an exploded view of an adapter holder and an adapter plug of the optical fiber adapter according to Embodiment 1 of the present invention;

7 is a schematic structural view of a fiber optic adapter according to Embodiment 2 of the present invention;

8 is a first schematic structural diagram of a connection structure of a spring piece of a fiber optic adapter according to Embodiment 2 of the present invention;

9 is a second schematic structural diagram of a connection structure of a spring piece of a fiber optic adapter according to Embodiment 2 of the present invention; 10 is a schematic view showing a state after the optical fiber adapter of Embodiment 2 of the present invention is assembled;

Figure 11 is an exploded view of the adapter holder and the adapter plug of the optical fiber adapter of the second embodiment of the present invention. detailed description

The present invention provides a fiber optic adapter, comprising an adapter base and an adapter plug, wherein the adapter base and the adapter plug can be inserted and fixed to each other;

At least one edge of the adapter base is provided with a boss, and a fixed card slot is formed under the boss, and the adapter plug is provided with an elastic member at a position corresponding to the same side edge of the boss, and the elastic component has an energy Hook below the boss

The hook portion at the fixed card slot, the elastic member and the adapter plug are pivotally connected by an elastic member that enables the elastic member to automatically return to hook the hook portion below the boss.

Book

The adapter socket and the adapter plug are configured to be compatible with different types of fiber optic connectors, and the selection of the specific model may be performed according to actual conditions, which is not limited herein.

The invention is further described below in conjunction with specific embodiments.

Example 1

Referring to FIG. 2 to FIG. 5, the optical fiber adapter provided in this embodiment is of the FC-FC type, that is, the adapter base and the adapter plug are both suitable for the FC type optical fiber connector. The fiber adapter includes:

Adapter seat 1 for FC type fiber optic connectors;

Adapter for FC type fiber optic connector FC plug 2;

Adapter shrapnel 3 ;

Adapter shaft 4 for mounting the adapter spring 3 on the adapter FC plug 2;

The adapter torsion spring 5 is used to realize the adapter spring 3 automatic return fastening.

The opposite side edges 11 and 12 of the adapter base 1 are provided with a boss, and a fixed card slot is formed under the boss. Specifically, in the embodiment, the edge 11 and the edge 12 are provided with grooves 111 and 121 at the middle thereof. The upper ends of the grooves 111 and 121 are provided with bosses 111a and 121a, and the lower sides of the bosses 111a and 121a are respectively formed with fixing slots 111b and 121b, as shown in FIG. 2 and FIG.

The adapter FC plugs 2 are respectively provided with adapter springs 3 on the corresponding side edges 21, 22 of the above-mentioned bosses 111a and 121a of the corresponding adapter base 1, and two adapter springs are disposed, and the two adapter spring pieces are oppositely disposed, and the lower portions of each of the elastic pieces 3 are respectively disposed. There is a hook portion 34 which can be hooked at the corresponding positions of the bosses 111a and 121a to fix the card slots 111b and 121b, see Fig. 3. Since the structure and operation principle and operation steps of the two shrapnels 3 are identical, only one of them is used as an example for the shrapnel. The setting method is described in detail.

Referring to Figures 3 and 4, the adapter FC plug 2 is provided with grooves on the edges 21, 22, respectively, wherein the grooves provided on the edge 22 are marked 2-2, and the grooves 2-2 are in their opposite two The adapter shaft 4 is disposed on the side of the accommodating hole 2-2a, and the two ends of the adapter shaft 4 are fixedly disposed in the accommodating hole 2-2a, and the accommodating hole can also be replaced by the accommodating groove. On the adapter shaft 4, the adapter elastic piece 3 can be rotated relative to the adapter rotating shaft 4, and the setting manner can be a common manner such as setting a through hole. The main body portion 50 of the adapter torsion spring 5 is sleeved on the adapter shaft 4, and the main body portion 50 is located between the adapter shaft 4 and the adapter elastic piece 3. At the same time, the adapter torsion spring 5 has exposed ends, wherein one end 5-1 is fixed. On the upper half of the adapter spring 3 (the portion above the adapter shaft 4), the other end 5-2 of the adapter torsion spring 5 abuts against the inward side 2-2b of the recess 2-2, the adapter torsion spring The above arrangement of the two ends of the 5 realizes the following functions: When the upper portion of the adapter spring 3 is pressed by the operator and the adapter book spring 3 is rotated about the adapter shaft 4, the 5-1 end of the adapter torsion spring 5 is compressed and moved inward by a certain distance. Thereby, the adapter torsion spring 5 is twisted to accumulate the resilience. When the operator releases the pressing of the upper portion of the adapter spring 3, the return resilience of the adapter torsion spring 5 pushes the upper portion of the adapter spring 3 outward, thereby making the adapter The hook portion 34 of the lower portion of the elastic piece 3 simultaneously moves inwardly and hooks at the fixed card slot below the boss of the corresponding position of the adapter base 1, thereby realizing the adapter elastic piece 3 Engaging the return function, the adapter 1 and adapter FC plug housing 2 firmly connected together.

The arrangement of the bosses in the adapter base 1 described above, the manner in which the adapter springs 3 are disposed, the arrangement manners and the setting positions of the adapter torsion springs 5 are merely examples, and those skilled in the art can perform various simple on the basis of the above description. Transformation, these simple transformation schemes are also within the scope of the present invention. The shape of the adapter elastic piece 3 can have various optional structures on the basis of the above functions. For example, in the present embodiment, each adapter elastic piece 3 includes three parts of an upper portion 31, a middle portion 32 and a lower portion 33, wherein the adapter elastic piece 3 is The central portion 32 is provided with a through hole through which the adapter shaft 4 can pass. Specifically, in the embodiment, the central portion 32 of the adapter elastic piece 3 is provided with an opening hole 32a at the center thereof, and the lower side of the opening hole 32a is provided with an adapter shaft 4 Through holes 32b, 32c, and the main body portion 5-3 of the adapter torsion spring 5 is disposed on an intermediate portion of the adapter shaft 4 that is disposed between both ends of the two through holes 32b, 32c, wherein the adapter The 5-1 end of the torsion spring 5 is fixed on the adapter elastic piece 3 in such a manner that the upper inner side surface of the opening hole 32a of the adapter elastic piece 3 and the adjacent inner side surface thereof are provided with the receiving groove 3-1, the adapter The 5-1 end of the torsion spring 5 is disposed in the accommodating groove 3-1. The upper portion 31 of the adapter elastic piece 3 is a pressure-operated operation portion, and the outer side surface thereof is provided with a structure for increasing friction, for example, in the embodiment, a plurality of elongated grooves 311, and the width of the upper portion 31 of the adapter elastic piece 3 is larger than The width of the central portion 32 and the lower portion 33 of the adapter tab 3. The bottom portion of the lower portion 33 of each adapter elastic piece 3 is provided with the above-mentioned hook portions 34, and each of the hook portions 34 can be fastened to be formed under the bosses 111a or 121a at the corresponding positions. At the fixing slot 111b or 121b, the adapter base 1 and the adapter FC plug 2 are firmly fixedly connected; the width of the lower portion 33 of the adapter elastic piece 3 is smaller than the width of the central portion 32 of the adapter elastic piece 3. Therefore, the upper portion 31, the middle portion 32 and the lower portion 33 of the adapter elastic piece 3 are arranged in a stepped manner in width, and such an arrangement is more suitable for the specific structure of the adapter base 1 and the adapter FC plug 2, so that the structural layout is more reasonable, and the thickness of each portion is appropriate. , thus better strength and durability. Correspondingly, the groove provided on the edges 21, 22 of the adapter FC plug 2 (the groove 2-2 on the visible side) also includes two portions having different widths, wherein the upper portion 2-2c having a larger width corresponds to the assembly adapter shrapnel. The middle portion 32 of 3 and the lower portion 2-2d of the smaller width correspond to the lower portion 33 of the adapter reel 3, as shown in Fig. 4.

Referring to FIG. 6, in the embodiment, the adapter says that the inner cylinder 23 of the FC plug 2 is usually further provided with a ceramic sleeve 24 and an FC locking cap 25, wherein the ceramic sleeve 24 is disposed in the central cylinder 23. The FC lock cap 25 is disposed at one end of the ceramic sleeve 24, specifically the upper portion of the adapter FC plug 2, and the FC book lock cap 25 is disposed between the ceramic sleeve 24 and the center cylinder 23; wherein, the center cylinder 23, The assembly of the ceramic sleeve 24 and the FC lock cap 25 is detailed in FIG.

Referring to FIG. 2, in the FC-FC type optical fiber adapter of this embodiment, the first part 31 of the oppositely disposed adapter spring 3 is pressed with a finger (such as using both the thumb and the index finger, or both the thumb and the middle finger), so that the adapter is made. The hook portion 34 at the end of the lower portion 33 of the elastic piece 3 is opened outwardly without affecting the assembly of the adapter base 1 and the adapter FC plug 2; then the adapter FC plug is inserted into the adapter base 1 to be placed with the adapter base 1 and the adapter FC plug 2 After the insert is fixed, the upper portion 31 of the adapter spring 3 is released, and the two adapter springs 3 that are oppositely disposed are automatically returned to the original position due to the resilience of the adapter torsion spring 5, and the hook portion 34 of the lower portion 33 of each adapter spring 3 The fixing slots 111b or 121b formed under the corresponding bosses 111a or 121a are respectively fastened to securely fix the edges of the adapter base 1 and the adapter FC plug 2.

An FC-FC type optical fiber adapter provided in this embodiment has the following advantages:

1. Its adapter shrapnel, adapter shaft, adapter torsion spring and adapter seat and adapter FC plug are easy to process, the precision is not high, and the product is easy to mass produce;

2. The side fixing structure of the FC-FC type optical fiber adapter provided in this embodiment is not easy to be worn and damaged, and slight wear does not affect the use effect;

3. The side fixing structure of the FC-FC type optical fiber adapter provided in this embodiment is symmetrically disposed on the opposite side, so there is no specific operation direction, and two directions can be used for positioning, which is more convenient and simple to use;

4. The side fixing structure of the FC-FC type optical fiber adapter provided in this embodiment is symmetrically disposed on the opposite side, and the double-sided force is applied during operation, the user has high comfort and high work efficiency;

5. The side fixing structure of the FC-FC type optical fiber adapter provided in this embodiment has a connection of automatic returning and snapping after being loosened. Connect function, easy to use, simple and labor-saving steps.

Example 2

Referring to FIG. 7 - FIG. 11, the optical fiber adapter provided in this embodiment is of the FC-SC type, that is, the adapter socket is suitable for the FC type optical fiber connector, and the adapter plug is suitable for the SC type optical fiber connector. The fiber adapter includes:

Adapter seat 1 for FC type fiber optic connectors;

Adapter for SC type fiber optic connector SC plug 2';

Adapter shrapnel 3 ;

Say

Adapter shaft 4 for mounting the adapter spring 3 on the adapter SC plug 2';

The adapter book torsion spring 5 is used to realize the adapter spring 3 automatic return fastening. The shape, structure, and arrangement of the adapter shrapnel in this embodiment are the same as those in the first embodiment. The main difference between the optical fiber adapter in this embodiment and the optical fiber adapter of the first embodiment is that the adapter plug structure is configured to be suitable for the SC type optical fiber. Connector. Referring to FIG. 7 and FIG. 11 , in an exemplary embodiment of the optical fiber adapter provided in this embodiment, the adapter SC plug 2 ′ mainly includes an SC tight cap 23 ′, a ceramic sleeve 24 , and an SC lock cap 25 ′. Screw 26, SC hook 27 and adapter SC cover 28, the assembly of these parts is shown in Figure 10.

In the present embodiment, the components of the optical fiber adapter and the connection relationship of the components are shown in Fig. 7 - Fig. 11, and the structures and functions of the respective structures are corresponding to those of the first embodiment, and will not be described in detail below.

Referring to FIG. 7, when the FC-SC type optical fiber adapter of this embodiment is used, first use a finger (such as using both the thumb and the index finger, or both the thumb and the middle finger) to press the upper portion 31 of the oppositely disposed adapter spring 3 to make the adapter The hook portion 34 at the end of the lower portion 33 of the elastic piece 3 is opened outwardly without affecting the assembly of the adapter base 1 and the adapter SC plug 2'; then the adapter SC plug 2' is inserted into the adapter base 1 to be used for the adapter base 1 and the adapter After the SC plug 2' is inserted and fixed, the upper portion 31 of the adapter spring 3 is released, and due to the resilience of the adapter torsion spring 5, the oppositely disposed two adapter springs 3 automatically return to the original position, and the lower portion 33 of each adapter spring 3 The hook portions 34 are respectively fastened to the fixing slots 111b or 121b formed under the corresponding bosses 11 la or 121a, so that the edges of the adapter base 1 and the adapter SC plug 2' are firmly and fixedly connected.

An FC-SC type optical fiber adapter provided in this embodiment has the following advantages:

2. The side fixing structure of the FC-SC type optical fiber adapter provided in this embodiment is not easy to be worn and damaged, and is slightly worn. Does not affect its use;

3. The side fixing structure of the FC-SC type optical fiber adapter provided in this embodiment is symmetrically disposed on the opposite side, so there is no specific operation direction, and two directions can be used for positioning, which is more convenient and simple to use;

4. The side fixing structure of the FC-SC type optical fiber adapter provided in this embodiment is symmetrically disposed on the opposite side, and the double-sided force is applied during operation, the user has high comfort and high work efficiency;

5. The side fixing structure of the FC-SC type optical fiber adapter provided in this embodiment has the connection function of automatically returning and snapping after being loosened, and is convenient to use, and the steps are simple and labor-saving.

Say

The FC-FC type fiber optic adapter and the FC-SC type fiber optic adapter provided by the present invention and the above embodiments are particularly suitable for use on an optical time domain reflectometer OTDR. In use, the adapter base 1 is fixedly disposed inside the OTDR, and the adapter is Book insertion

The head 2 is pluggable on the adapter base 1. This pluggable design is ideal for OTDRs that require frequent replacement of different adapter plugs for inspection.

The preferred embodiments of the invention disclosed above are merely illustrative of the invention. The preferred embodiments are not to be considered in all detail, and the invention is not limited to the specific embodiments. Obviously, many modifications and variations are possible in light of the teachings herein. The present invention has been chosen and described in detail to explain the embodiments of the invention and the embodiments of the invention. The invention is to be limited only by the scope of the appended claims and the appended claims.

Claims

Claim

A fiber optic adapter, comprising: an adapter base and an adapter plug, wherein the adapter base and the adapter plug are insertably fixed to each other;

2. The fiber optic adapter according to claim 1, wherein the adapter base and the adapter plug are both quadrangular, and the quadrilateral adapter plug is respectively provided with the elastic member at opposite edges thereof. The quadrilateral adapter base is correspondingly provided with the card slot.

The optical fiber adapter according to claim 1 or 2, wherein the card slot is disposed in a manner that: an edge of the adapter base is provided with a boss, and the card slot is formed below the boss.

The optical fiber adapter according to claim 1 or 2, wherein the elastic member is pivotally coupled to the adapter plug via a pivot, and the elastic member is twisted by a pivot member The elastic element achieves its automatic return after being pressed around the pivot.

The optical fiber adapter according to claim 4, wherein the torsion elastic member is a torsion spring, the torsion spring is sleeved on the pivot shaft, and one end of the torsion spring is fixed to the elastic On the component, the other end abuts against a side of the adapter plug that faces the elastic member.

6. The fiber optic adapter according to claim 1, wherein the elastic member is a spring piece, the elastic piece includes an upper portion, a middle portion, and a lower portion, and a middle portion of the elastic piece is pivotally coupled to the adapter through the pivot shaft The upper part of the elastic piece is a pressure-receiving part, the lower part of the elastic piece is an automatic returning part, and the lower end of the elastic piece is provided with the hook-shaped part.

The optical fiber adapter according to claim 6, wherein the adapter plug is provided with a groove on a side where the elastic piece is disposed, and two ends of the pivot shaft are fixedly disposed on the opposite sides of the groove On the side, the middle portion of the elastic piece is sleeved on the pivot shaft.

The optical fiber adapter according to claim 7, wherein a width of the upper portion, the middle portion, and the lower portion of the elastic piece is stepwise decreasing; correspondingly, the groove includes two portions having different widths, wherein the width a larger portion is located above and corresponds to a middle portion of the elastic piece, and a portion having a smaller width is located below the lower portion of the elastic piece, and a transition convex portion is disposed between the larger portion and the smaller portion station.

The optical fiber adapter according to claim 6 or 8, wherein the upper outer side surface of the elastic piece is provided with a structure capable of increasing friction.

Claims

10. Use of a fiber optic adapter according to any of the preceding claims 1-9 for an optical time domain reflectometer.