CN111381326B

CN111381326B - Connecting device and optical device external optical fiber device

Info

Publication number: CN111381326B
Application number: CN201811642059.5A
Authority: CN
Inventors: 韩蒙蒙
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2022-10-18
Anticipated expiration: 2038-12-29
Also published as: WO2020134929A1; CN111381326A

Abstract

The invention relates to the technical field of optical device connection, in particular to a connecting device and an optical device external optical fiber device. The connecting device comprises a shell, a rotary table, a first connecting piece and a driving assembly, wherein a connecting port is formed in the shell; the rotary table is arranged in the shell and can rotate around a first shaft fixed on the shell; the first connecting pieces are arranged on the rotary table and are all positioned on a first circumference taking the first shaft as the circle center, and the connecting ports are opposite to the first circumference; and the driving assembly is used for driving the rotating disc to rotate so that any first connecting piece is opposite to the connecting port. When the existing first connecting piece cannot work continuously for various reasons, the rotating disc can be rotated to the position of the next first connecting piece through the driving assembly, and therefore the first connecting piece is replaced; in the external optical fiber device of optical device, when the cleaning tool can not clear away the dust of the current optical fiber plug terminal surface on the carousel, make the carousel rotate the position of next optical fiber plug through drive assembly, and then realize the change of optical fiber plug.

Description

Connecting device and optical device external optical fiber device

Technical Field

The invention relates to the technical field of optical device connection, in particular to a connecting device and an optical device external optical fiber device.

Background

In the application of optical devices in the field of optical communications, an external optical fiber plug corresponding to an interface type is usually inserted into an optical module to realize butt joint with an internal optical fiber of the optical module, so as to realize transmission of optical signals. In engineering application, the end face of the optical fiber built in the optical device is often polluted, so that an optical signal in the optical fiber is influenced. When the optical power is high to a certain degree, the optical fiber is even burnt out, which is a common cause of error code and service interruption failure in the optical communication system. Slight dust can be wiped clean by the fiber wiping pen, and some fiber wiping pens which cannot wipe clean dust can only discard the optical module or return the optical module to the factory for maintenance.

The jack of the existing optical device is usually open, and dust and other impurities can easily enter the jack. The solution in the prior art is designed only in terms of dust prevention. However, in practical applications, the optical module cannot avoid the operation of inserting and extracting the optical fiber in a working state. Dust will always enter the fiber end face inside the module during fiber insertion and removal. The light module entering light dust can be wiped clean by a fiber wiping pen and then used continuously. And the pen can not be continuously used under the condition that dust which can not be removed by the fiber wiping pen can not be removed.

Disclosure of Invention

In order to solve the technical problem, the optical fiber connecting device capable of realizing the interface backup function is provided, the problems that the optical fiber end face is damaged, the error code is generated, the module is abandoned, the repair is performed and the like due to the fact that dust on the optical fiber end face in the module cannot be removed are prevented, and the technical scheme is provided.

In a first aspect, an embodiment of the present application provides a connection device.

According to this application embodiment provides a connecting device, it includes:

a housing, which is provided with a connecting port;

the rotating disc is arranged in the shell and can rotate around a first shaft fixed on the shell;

the first connecting pieces are arranged on the rotary table and are all positioned on a first circumference taking the first shaft as the circle center, and the connecting ports are opposite to the first circumference;

and the driving assembly is used for driving the turntable to rotate so that any first connecting piece is opposite to the connecting port.

In a second aspect, the present application provides an optical device external optical fiber apparatus.

According to the external optical fiber device of the optical device provided by the embodiment of the application, the optical device comprises a connecting device, the connecting device is the connecting device provided by the first aspect of the application, and the first connecting piece is an optical fiber plug.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the connecting device realizes the backup and replacement of the first connecting piece through the driving assembly and the rotating disc. When the existing first connecting piece cannot work continuously for various reasons, the rotating disc can be rotated to the position of the next first connecting piece through the driving assembly, and therefore the first connecting piece is replaced; particularly, in the external optical fiber device of an optical device, when dust on the end face of the current optical fiber plug on the turntable cannot be removed by a cleaning tool, debugging personnel can rotate the turntable to the position of the next optical fiber plug through the driving assembly, and then the replacement of the optical fiber plug is realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic front structural view of a connection device according to an embodiment of the present disclosure;

FIG. 2 is a schematic side view of a partial structure of a connecting device according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of an optical device external optical fiber apparatus provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a fiber optic plug according to an embodiment of the present disclosure;

FIG. 5 is a state reference diagram of a switch assembly provided by an embodiment of the present application; and

fig. 6 is a reference diagram of another state of a switch assembly provided in an embodiment of the present application.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1-2, the present application provides a coupling device comprising a housing 1, a turntable 2, a first coupling member 3 and a drive assembly 4.

Wherein the housing 1 is used for providing a closed space, installing internal components, preventing external dust and impurities from entering the housing and polluting the components, and is used as a carrier for installing the internal components, and the housing 1 is provided with a connecting port 101 (shown in fig. 3); the turntable 2 is arranged in the shell 1, a first shaft 102 is fixed on the shell 1, and the turntable can rotate around the first shaft 102; the first connecting pieces 3 are arranged on the rotary table 2 and are all positioned on a first circumference taking the first shaft 102 as the circle center, and the connecting ports 101 are opposite to the first circumference, so that any one first connecting piece 3 can be opposite to the connecting ports 101 through the rotary table 2; the driving component 4 is used for driving the turntable 2 to rotate, so that any first connecting piece 3 is opposite to the connecting port 101.

In the above embodiment, when the connection device is in a normal operation state, one of the first connection members 3 faces the connection port 101, and the second connection member on the external device is connected to the first connection member 3 through the connection port 101, so as to connect the external device to the connection device. When the first connecting piece cannot work normally due to damage, dirt or other reasons, the driving assembly 4 can drive the rotary disc 2 to rotate, so that other first connecting pieces 3 rotate to the positions right facing the connecting port 101, and backup and replacement of the first connecting pieces 3 are achieved through the driving assembly 4 and the rotary disc 2. When the existing first connecting piece cannot work continuously for various reasons, the rotating disc can be rotated to the position of the next first connecting piece through the driving assembly, and then the first connecting piece is replaced.

In the above embodiment, the driving assembly 4 is designed to drive the turntable 2 to rotate so that the different first connecting members 3 face the connecting ports 101, and various driving assemblies in the prior art can be adopted.

As shown in fig. 1, the present application provides a preferred implementation of the drive assembly 4. The driving assembly 4 includes a pressing portion 401, a first driving lever 402 and a second driving lever 403. A plurality of the pressing parts 401 are arranged on the turntable 2 and distributed on a second circumference with the first shaft 102 as the center of circle; the middle part of the first deflector rod 402 is sleeved on the second shaft 103, the second shaft 103 is fixed on the shell 1, and the first deflector rod 402 can rotate around the second shaft 103; one end of the second lever 403 is rotatably connected to one end of the first lever 402, and the other end of the second lever 403 can abut against one of the pressing portions 401. The specific working process of the driving assembly 4 in this embodiment is as follows: as shown in fig. 1, one end of the second lever 403 abuts against one of the pressing portions 401, and the free end of the first lever 402 is driven by pressing down, so that the first lever 402 rotates around the second shaft 103, the other end of the first lever 402 rises to drive the second lever 403 to rise, and thrust is applied to the pressing portion 401 abutting against the second lever 402, so as to push the rotary plate 2 to rotate, and further drive the first connecting member 3 on the rotary plate 2 to rotate, and after the free end of the first lever is pressed down to a certain degree, the free end of the first lever can be lifted up and reset, and return to the state shown in fig. 1 again, so that one end of the second lever abuts against the other pressing portion 401, and the above actions are repeated, and the rotary plate 2 is pushed to rotate by a certain angle again until switching between the first connecting members 3 is realized. In a specific implementation process, the number of the pressing parts can be reasonably set according to the size of each component, so that after the second shift lever 403 is reset, the second shift lever can be abutted to another pressing part 401 in a new action stroke, and the rotation continuity of the turntable 2 is ensured. In addition, a certain damping is required to be set at the rotational connection position of the first shift lever 402 and the second shift lever 403 to prevent the second shift lever 403 from rotating due to its own weight after being separated from the pressing portion 401, and the resetting cannot be completed.

For convenience of operation, as shown in fig. 1, the free end of the first shifter lever 402 protrudes out of the housing 1, and for preventing dust from entering, a first dust cover 8 is provided outside the free end of the first shifter lever 402, and the first dust cover 8 is detachably connected to the housing 1.

In some embodiments, one side of the first lever 402 is provided with a first positioning portion 404 fixed on the housing 1, and the other side is provided with a first elastic member 405 fixed on the housing 1, and the first lever 402 abuts on the first positioning portion 404 under the elastic force of the first elastic member 405. This embodiment can realize that after the first driving lever 402 is driven, the first elastic element 405 can automatically reset without manual control.

In some embodiments, as shown in fig. 2 and 3, the pressing portion 401 is a latch with a wedge-shaped structure, a height of each latch protruding out of the surface of the turntable 2 is gradually reduced in a rotation direction of the turntable 2, and the latches with the wedge-shaped structures are arranged in the same direction on the second circumference, so that a higher side of the wedge-shaped structure is used for providing a portion for the second shift lever 403 to abut against, and one side of the inclined surface can enable the second shift lever 403 to slide along the inclined surface in a resetting process, and a jamming phenomenon cannot occur. Of course, the second lever 403 needs to have a certain degree of freedom in a direction parallel to the first axis 102.

Preferably, as shown in fig. 1, the number of the pressing portions 401 is the same as that of the first connecting members 3, the plurality of first connecting members 3 are uniformly distributed on a first circumference, the plurality of pressing portions 401 are uniformly distributed on a second circumference, when a certain first connecting member 3 faces the connection port 101, the pressing portion abutted by the first shift lever 402 is in a first position, another pressing portion adjacent to the pressing portion is in a second position, and the second shift lever 403 drives the pressing portion 401 abutted by the first shift lever 402 to rotate from the first position to the second position by driving the first shift lever 402 to rotate around the second shaft 103. In this embodiment, the first lever 402 is actuated once, so that the first connecting member 3 can be replaced once, which is more convenient and faster. After being combined with other embodiments of the present application, the automatic reset can be realized by the first elastic member 405, and the limit of the first shift lever is realized by the first positioning portion 404, when the first shift lever is located at the position defined by the first positioning portion 404, the pressing portion 401 abutted by the second shift lever 403 is just located at the first position, the third positioning portion 406 can be further set on the housing 1, the third positioning portion 406 and the first elastic member 405 are located at the same side of the first shift lever 402, and when the first shift lever 402 moves to the position defined by the third positioning portion 406, the pressing portion 401 abutted by the second shift lever 403 is just rotated to the second position. The limiting mode further improves the operation accuracy of the first connecting piece 3 during switching.

As a plurality of pressing portions are distributed on the same circumference, when the second lever 403 presses against a certain pressing portion 401 to move, other pressing portions 401 may collide or interfere with the second lever 403, and to solve this problem, as shown in fig. 2, in some embodiments, the second lever 403 includes a first section 4031, the first section 4031 is disposed on a side of the pressing portion 401 away from the turntable 2, an end of the first section 4031 is bent toward the turntable 2 to form a second section 4032, and the second section 4032 presses against the pressing portion 401. Through the clearance setting between first section 4031 and the pressing part 401, avoided the motion in-process, the collision or the interference of pivoted pressing part 401 to first section 401, the second section 4032 of buckling is used for with the butt of pressing part 401, at the in-process that resets, can slide along the inclined plane of wedge structure latch, finally the butt is on the latch on next position.

As shown in fig. 1 and 2, in order to construct each component to have a certain gradient in the axial direction, and provide a certain movement and installation space, the turntable 2 includes a main turntable 201 and an auxiliary turntable 202 which are arranged in a stacked manner, the main turntable 201 and the auxiliary turntable 202 are coaxially arranged, both the main turntable 201 and the auxiliary turntable 202 are disc-shaped, the diameter of the main turntable 201 is greater than that of the auxiliary turntable 202, both the main turntable 201 and the auxiliary turntable 202 rotate around the first shaft 102, and the main turntable 201 and the auxiliary turntable 202 are fixedly connected, and both the main turntable 201 and the auxiliary turntable 202 can rotate synchronously. The pressing part 401 is arranged on the surface of the auxiliary turntable 202, and the first connecting piece is arranged on the main turntable 201.

As shown in fig. 1, in some embodiments, the connection device further comprises a limiting assembly 5, and the limiting assembly 5 comprises a limiting groove 501 and a third driving lever 502. A plurality of limiting grooves 501 are arranged, the number of the limiting grooves 501 is the same as that of the first connecting pieces 3, and the limiting grooves 501 are arranged on the turntable 2 and are uniformly distributed on a third circumference which takes the first shaft 102 as the center of circle; the middle of the third driving lever 502 is sleeved on the third shaft 104 fixed on the housing 1, and the third driving lever 502 can rotate around the third shaft 104; when one pressing part 401 is located at the first position, one end of the third driving lever 502 can be inserted into one limiting groove 501 in a matching manner by rotating the third driving lever 502, so as to perform a limiting function, specifically, in the connection device shown in fig. 1, when the turntable 2 finishes rotating, the first driving lever 402 returns, and the third driving lever 502 is clamped into the limiting groove 501 on the turntable 2, so that the turntable 2 is prevented from rotating continuously counterclockwise. After the first driving lever 402 is reset, the first positioning portion 404 and the second driving lever 403 cooperate to prevent the rotation of the turntable 2 in the clockwise direction. The turntable 2 will be fixed in the position required by the design. When the first connecting piece 3 needs to be switched, the third driving lever 502 is driven to rotate, so that the end of the third driving lever 502 moves out of the limiting groove 501, and the limiting can be released.

In order to realize the linkage control of the driving assembly and the limiting assembly, the other end of the third shifting lever 502 may be rotatably connected to the first shifting lever 402, and when the pressing portion 401 abutted by the second shifting lever 403 is located at the first position, one end of the third shifting lever 502 is just inserted into one limiting groove 501 in a matching manner. At this time, by rotating the first driving lever 402, it drives the third driving lever 502 to rotate, so that the end thereof moves out of the limiting groove 501, and the limitation is released instantaneously. The third driving lever 502 and the first driving lever 402 may be directly connected in a rotating manner, or may be connected in a rotating manner through other media, specifically selected according to the position relationship and the size of the third driving lever and the first driving lever, for example, as shown in fig. 1, the third driving lever 502 and the first driving lever 402 are connected in a rotating manner through the connecting rod 9.

As a specific application scenario of the connection device provided in the foregoing embodiment, as shown in fig. 3 to 6, an embodiment of the present application further provides an external optical fiber device for an optical device, where the optical device includes the connection device provided in the embodiment of the present application, where the first connection component 3 is an optical fiber plug, the optical fiber plug penetrates through the turntable 2, and both ends of the optical fiber plug are respectively provided with a first optical fiber guide groove 301 and a second optical fiber guide groove 302, when the optical fiber plug faces the connection port 101, the first optical fiber guide groove 301 is communicated with the connection port 101 and is used for being in matching connection with a first optical fiber connector (a second connection component) of the external optical fiber device, and the second optical fiber guide groove 302 is used for being in matching connection with a second optical fiber connector 6 inside the optical device. In the above embodiment, when the external optical fiber device of the optical device is in a normal operation state, a certain optical fiber plug faces the connection port 101, and the first optical fiber connector on the external optical fiber device is connected to the optical fiber plug through the connection port 101, so as to realize the connection between the external optical fiber device and the optical device. When the optical fiber plug is polluted, the cleaning tool cannot remove dust on the end face of the current optical fiber plug on the turntable 2, so that the optical fiber plug cannot normally work, the turntable 2 can be driven to rotate by the driving component 4, other optical fiber plugs can be rotated to the position just opposite to the connector 101, and backup and replacement of the optical fiber plug are realized through the driving component 4 and the turntable 2. That is, when the existing optical fiber plug in the optical device cannot continue to work for various reasons, the driving assembly 4 can rotate the turntable 2 to the position of the next optical fiber plug, thereby realizing the replacement of the optical fiber plug.

As shown in fig. 4, an internal structure of a fiber optic plug is shown. As shown in the figure, two ends of the optical fiber plug are respectively provided with a first optical fiber guide groove 301 and a second optical fiber guide groove 302, and two ferrule baffles 304 respectively connected to the first optical fiber guide groove 301 and the second optical fiber guide groove 302, a spring 307 is arranged between the two ferrule baffles 304, the ferrule baffles 304 are all provided with a ferrule 303 in a penetrating manner, the two ferrules 303 are connected through an optical fiber 306, the optical fiber 306 is arranged in the spring 307, and the optical fiber 306 and the ferrule 303 are connected through a melting point fixing member 305.

In the above embodiments, the second fiber guide groove 302 on the fiber optic plug is connected to the second fiber splice 6 inside the optical device, before switching the fiber optic plug, the second fiber guide groove 302 and the second fiber splice 6 need to be separated in advance, and after the switching is completed, the two fiber splice are connected, so as to facilitate the operation of the above processes, as shown in fig. 4 to 6, in some embodiments, the optical device is further provided with a switch assembly 7.

The switch assembly 7 includes a slide lever 701, a second positioning portion 702, a third positioning portion 703, and a switch lever 704. The sliding rod 701 is connected with the second optical fiber connector 6 and is used for driving the second optical fiber connector 6 to be close to or far away from the optical fiber plug opposite to the connecting port 101; the second positioning portion 702 is fixed to the housing 1; the third positioning part 703 is connected with the sliding rod 701, and when the sliding rod 701 drives the second optical fiber connector 6 to be connected with the second optical fiber guide groove 302 in a matching manner, the third positioning part 703 is locked with the second positioning part 702 in a limiting manner; the switch lever 704 is connected to the third positioning portion 703, and is used to release the limit lock between the third positioning portion 703 and the second positioning portion 702.

The specific working process of the switch assembly 7 is as follows:

as shown in fig. 5, the second fiber connector 6 and the second fiber guide groove 302 are separately arranged, at this time, the sliding rod 701 is driven to make the second fiber connector 6 close to the second fiber guide groove 302, when the second fiber connector 6 is connected with the second fiber guide groove 302 in a matching manner, the third positioning portion 703 and the second positioning portion 702 are locked in a limiting manner, and the second fiber connector 6 and the second fiber guide groove 302 are firmly connected together under the action of the locking in a limiting manner, which is the state shown in fig. 6; when the first fiber connector and the second fiber connector need to be separated, the switch rod 704 is actuated to release the limit locking between the third positioning portion 703 and the second positioning portion 702, and then the sliding rod 701 is driven to make the second fiber connector 6 be away from the second fiber guide groove 302, so that the first fiber connector and the second fiber connector are separated.

Specifically, the third positioning portion 703 and the second positioning portion 702 are both provided with wedge-shaped structures, the inclined surfaces of the third positioning portion 703 and the second positioning portion 702 are arranged oppositely and in parallel, the two inclined surfaces slide oppositely in the process of being close to each other on the same straight line, a second elastic member 705 is arranged, under the action of elastic force of the second elastic member, the second positioning portion is extruded all the time in the sliding process of the third positioning portion 703 relative to the second positioning portion 702, after the sliding travel of the two inclined surfaces is over, the two wedge-shaped structures can be clamped together under the action of the elastic force to form a limiting locking state, and when the limiting locking is released, only the action force of overcoming the second elastic member 705 needs to be applied to the third positioning portion 703 through the switch rod 704.

For convenience of operation, as shown in fig. 4 to 6, the free ends of the sliding rod 701 and the switch rod 704 extend out of the housing 1, and for preventing dust from entering, a second dust cover 10 is disposed outside the sliding rod 701 and the switch rod 704, and the second dust cover 10 is detachably connected to the housing 1, so as to prevent dust when the optical fiber plug does not need to be replaced.

Some embodiments in this specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above are merely exemplary embodiments of the present invention, which can be understood and implemented by those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting device for use in connecting an optical device to an external optical fiber device, the connecting device comprising:

a shell (1) which is provided with a connecting port (101);

the rotary table (2) is arranged in the shell (1) and can rotate around a first shaft (102) fixed on the shell (1);

the first connecting pieces (3) are arranged on the rotary table (2) and are all positioned on a first circumference with the first shaft (102) as the center of a circle, and the connecting ports (101) are opposite to the first circumference;

the driving assembly (4) is used for driving the rotary disc (2) to rotate, so that any first connecting piece (3) is opposite to the connecting port (101);

the drive assembly (4) comprises:

the pressing parts (401) are arranged on the rotating disc (2) and distributed on a second circumference taking the first shaft (102) as the center of a circle;

the middle of the first shifting lever (402) is sleeved on a second shaft (103) fixed on the shell (1), and the first shifting lever (402) can rotate around the second shaft (103);

and one end of the second shifting lever (403) is rotatably connected with one end of the first shifting lever (402), and the other end of the second shifting lever can be abutted against one of the pressing parts (401).

2. The connecting device according to claim 1, wherein the first lever (402) is provided with a first positioning portion (404) fixed to the housing (1) at one side thereof and a first elastic member (405) fixed to the housing (1) at the other side thereof, and the first lever (402) abuts against the first positioning portion (404) under the elastic force of the first elastic member (405).

3. The connecting device according to claim 1, wherein the number of the pressing portions (401) is the same as that of the first connecting members (3), a plurality of the first connecting members (3) are uniformly distributed on the first circumference, a plurality of the pressing portions (401) are uniformly distributed on the second circumference, the pressing portion abutted by the second shift lever (403) is in a first position, another pressing portion adjacent to the pressing portion is in a second position, and when the first shift lever (402) is driven to rotate around the second shaft (103), the pressing portion (401) abutted by the second shift lever (403) can be driven to rotate from the first position to the second position by the second shift lever (403).

4. The connecting device according to claim 1, characterized in that the pressing part (401) is a wedge-shaped structure of latch teeth, and the height of each latch tooth protruding out of the surface of the rotating disc (2) is gradually reduced in the rotating direction of the rotating disc (2).

5. The connecting device according to claim 1, characterized in that the second lever (403) comprises a first section (4031), the first section (4031) is arranged on a side of the pressing portion (401) facing away from the turntable (2), an end of the first section (4031) is bent towards the turntable (2) to form a second section (4032), and the second section (4032) abuts on the pressing portion (401).

6. A connection device according to claim 3, further comprising a stop assembly (5), said stop assembly (5) comprising:

the number of the limiting grooves (501) is the same as that of the first connecting pieces (3), and the limiting grooves are arranged on the rotating disc (2) and are uniformly distributed on a third circumference which takes the first shaft (102) as the center of a circle;

the middle of the third deflector rod (502) is sleeved on a third shaft (104) fixed on the shell (1), and the third deflector rod (502) can rotate around the third shaft (104);

when one pressing part (401) is located at the first position, one end of the third driving lever (502) can be inserted into one limiting groove (501) in a matching mode by rotating the third driving lever (502).

7. The connecting device according to claim 6, wherein the other end of the third shift lever (502) is rotatably connected to the first shift lever (402), and when the pressing portion (401) abutted by one of the second shift levers (403) is located at the first position, one end of the third shift lever (502) is just inserted into one of the limiting grooves (501) in a matching manner.

8. An optical device external optical fiber device, characterized in that the optical device comprises the connecting device according to any one of claims 1-7, and the first connecting member (3) is an optical fiber plug.

9. The optical device external optical fiber device according to claim 8, wherein the optical fiber plug penetrates through the rotating disc (2), and both ends of the optical fiber plug are respectively provided with a first optical fiber guide groove (301) and a second optical fiber guide groove (302), when the optical fiber plug faces the connecting port (101), the first optical fiber guide groove (301) is communicated with the connecting port (101) and is used for being matched and connected with a first optical fiber connector of an external optical fiber device, and the second optical fiber guide groove (302) is used for being matched and connected with a second optical fiber connector (6) inside the optical device.

10. An optical device external optical fiber device according to claim 9, wherein a switch assembly (7) is further disposed in the optical device, the switch assembly (7) comprising:

the sliding rod (701) is connected with the second optical fiber connector (6) and is used for driving the second optical fiber connector (6) to be close to or far away from the optical fiber plug which is opposite to the connecting port (101);

a second positioning portion (702) fixed to the housing (1);

the third positioning part (703) is connected with the sliding rod (701), and when the sliding rod (701) drives the second optical fiber connector (6) to be in matched connection with the second optical fiber guide groove (302), the third positioning part (703) and the second positioning part (702) are in limited locking;

and a switch lever (704) connected to the third positioning portion (703) and configured to release the limit lock between the third positioning portion (703) and the second positioning portion (702).