CN219799847U - Optical module - Google Patents

Abstract

The optical module provided by the embodiment of the utility model comprises a circuit board, a tube shell, a tail fiber and an optical fiber connector, wherein one end of the tail fiber is connected with the tube shell, and the other end of the tail fiber is connected with the optical fiber connector; the fiber guide piece is fixed at one end of the fixing piece, and the connecting piece is fixed at the other end of the fixing piece; the optical fiber lock pin is arranged in the optical fiber guide piece, the fixing piece and the connecting piece. The elastic piece comprises a pressing part, a locking part and a bending part; the locking part is used for being connected with an external optical fiber connector, and the gap from the end part of the bending part to the surface of the optical fiber connector is smaller, so that the tail fiber can be prevented from being wound into the gap between the elastic piece and the surface of the optical fiber connector, and the tail fiber is protected; the bending part is arranged at an acute angle with the axis of the optical fiber connector, so that when the pressing part is pressed, the bending part moves backwards relatively easily, and the pressing action of the pressing part is not influenced.

Description

Optical module

Technical Field

The utility model relates to the technical field of optical communication, in particular to an optical module.

Background

With the development of new business and application modes such as cloud computing, mobile internet, video and the like, the progress of optical communication technology is becoming more important. In the optical communication technology, an optical module is used as one of key devices in optical communication equipment, so that photoelectric signal conversion can be realized; in the development of optical communication technology, the data transmission rate of the optical module is required to be continuously increased.

In some configurations of optical modules, fiber optic connectors are included. The tail fiber inside the optical module is connected with the optical fiber connector, and the butt joint of the tail fiber inside the optical module and the optical fiber outside the optical module is realized through the optical fiber connector.

Disclosure of Invention

The utility model provides an optical module to provide an optical fiber connector with better performance.

The optical module provided by the embodiment of the utility model comprises:

a circuit board;

a tube case in which a light emitting part and/or a light receiving part are provided;

the tail fiber is connected with the tube shell and is used for transmitting optical signals;

an optical fiber connector for passing a pigtail, comprising:

the fiber guiding piece comprises a guiding section, a gradual change section and a first nesting section which are connected in sequence;

the fixing piece comprises a first clamping section and a second clamping section, wherein the first clamping section is connected with the first nesting section so as to enable the fixing piece to be connected with the fiber guide piece;

the connecting piece comprises a second nesting section and an elastic piece, and the second clamping section is connected with the second nesting section so as to enable the fixing piece to be connected with the connecting piece; the elastic piece comprises a pressing part, a locking part and a bending part, wherein the locking part is used for being connected with an external optical fiber connector; the bending part and the axis of the second nesting section are arranged at an acute angle, and the gap between the end part of the bending part and the surface of the second nesting section is not larger than the diameter of the tail fiber;

the optical fiber inserting core is arranged in the optical fiber guiding piece, the fixing piece and the connecting piece and is used for allowing the tail optical fiber to pass through.

The optical module provided by the embodiment of the utility model comprises a circuit board, a tube shell, a tail fiber and an optical fiber connector, wherein one end of the tail fiber is connected with the tube shell, and the other end of the tail fiber is connected with the optical fiber connector; the fiber guide member comprises a guide section, a gradual change section and a first nesting section, the fixing member comprises a first clamping section and a second clamping section, and the connecting member comprises an elastic member and a second nesting section; the first nested section is connected with the first clamping section so as to fix the fiber guiding piece at one end of the fixing piece, and the second nested section is connected with the second clamping section so as to fix the connecting piece at the other end of the fixing piece. The elastic piece comprises a pressing part, a locking part and a bending part; the locking part is used for realizing connection with an external optical fiber connector; the bending part is obliquely arranged, the bending part and the axis of the second nesting section are arranged at an acute angle, and the gap between the end part of the bending part and the surface of the second nesting section is not larger than the diameter of the tail fiber; the gap from the end of the bending part to the surface of the second nesting section is smaller, so that the tail fiber can be prevented from being wound into the gap between the elastic piece and the surface of the optical fiber connector; the bending part and the axis of the second nesting section are arranged at an acute angle, so that when the pressing part is pressed, the bending part moves backwards relatively easily, and the pressing action of the pressing part is not influenced.

Drawings

In order to more clearly illustrate the technical solutions of the present disclosure, the drawings used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings may be obtained according to these drawings to those of ordinary skill in the art. Furthermore, the drawings in the following description may be regarded as schematic diagrams, not limiting the actual size of the products, the actual flow of the methods, the actual timing of the signals, etc. according to the embodiments of the present disclosure.

Fig. 1 is a partial architecture diagram of an optical communication system according to some embodiments of the present utility model;

FIG. 2 is a partial block diagram of a host computer according to some embodiments of the present utility model;

FIG. 3 is a block diagram of an optical module according to some embodiments of the present utility model;

FIG. 4 is an exploded view of an optical module according to some embodiments of the present utility model;

fig. 5 is a block diagram of an optical transceiver according to some embodiments of the present utility model;

FIG. 6 is an exploded view of an optical transceiver component according to some embodiments of the present utility model;

FIG. 7 is a block diagram of an optical fiber connector according to some embodiments of the present utility model;

FIG. 8 is a cross-sectional view of a fiber optic connector according to some embodiments of the present utility model;

FIG. 9 is an exploded view of a fiber optic connector according to some embodiments of the present utility model;

FIG. 10 is a block diagram of a fiber guide according to some embodiments of the present utility model;

FIG. 11 is a cross-sectional view of a fiber guide provided in accordance with some embodiments of the present utility model;

FIG. 12 is a block diagram of a fastener according to some embodiments of the present utility model;

FIG. 13 is a second block diagram of a fastener according to some embodiments of the present utility model;

FIG. 14 is a cross-sectional view of a fastener provided in accordance with some embodiments;

FIG. 15 is a block diagram of a first connector according to some embodiments of the present utility model;

FIG. 16 is a second block diagram of a connector according to some embodiments of the present utility model;

FIG. 17 is a cross-sectional view of a connector according to some embodiments of the present utility model;

FIG. 18 is an exploded view of a fiber optic ferrule provided in accordance with some embodiments of the present utility model;

FIG. 19 is a cross-sectional view of an optical fiber ferrule according to some embodiments of the present utility model;

FIG. 20 is an assembly view of a fiber guide and a fastener according to some embodiments of the present utility model;

FIG. 21 is an exploded view of an assembly of a fiber optic member and a fastener member according to some embodiments of the present utility model;

FIG. 22 is an assembly view of a connector and a fixture according to some embodiments of the present utility model;

fig. 23 is an assembly view of a connector and a fiber stub according to some embodiments of the present utility model.

Detailed Description

The optical communication technology establishes information transfer between information processing apparatuses, and the optical communication technology loads information onto light, and uses propagation of light to realize information transfer, and the light loaded with information is an optical signal. The optical signal propagates in the information transmission device, so that the loss of optical power can be reduced, and the high-speed, long-distance and low-cost information transmission can be realized. Information that can be processed by the information processing device exists in the form of an electrical signal, and an optical network terminal/gateway, a router, a switch, a mobile phone, a computer, a server, a tablet computer and a television are common information processing devices, and an optical fiber and an optical waveguide are common information transmission devices.

The mutual conversion of optical signals and electric signals between the information processing equipment and the information transmission equipment is realized through an optical module. For example, an optical fiber is connected to an optical signal input end and/or an optical signal output end of the optical module, and an optical network terminal is connected to an electrical signal input end and/or an electrical signal output end of the optical module; the optical module converts the first optical signal into a first electric signal, and the optical module transmits the first electric signal into an optical network terminal; the second electrical signal from the optical network terminal is transmitted into the optical module, the optical module converts the second electrical signal into a second optical signal, and the optical module transmits the second optical signal into the optical fiber. Because the information processing devices can be connected with each other through an electrical signal network, at least one type of information processing device is required to be directly connected with the optical module, and not all types of information processing devices are required to be directly connected with the optical module, and the information processing device directly connected with the optical module is called an upper computer of the optical module.

Fig. 1 is a schematic diagram of a local architecture of an optical communication system according to some embodiments of the present utility model. As shown in fig. 1, a part of the optical communication system is represented as a remote information processing apparatus 1000, a local information processing apparatus 2000, a host computer 100, an optical module 200, an optical fiber 101, and a network cable 103.

One end of the optical fiber 101 extends toward the remote information processing apparatus 1000, and the other end is connected to the optical interface of the optical module 200. The optical signal can be totally reflected in the optical fiber 101, the propagation of the optical signal in the total reflection direction can almost maintain the original optical power, the optical signal can be totally reflected in the optical fiber 101 for a plurality of times, the optical signal from the direction of the far-end information processing device 1000 is transmitted into the optical module 200, or the light from the optical module 200 is propagated towards the direction of the far-end information processing device 1000, so that the information transmission with long distance and low power consumption is realized.

The number of the optical fibers 101 may be one or plural (two or more); the optical fiber 101 and the optical module 200 are movably connected in a pluggable mode, and can also be fixedly connected.

The upper computer 100 is provided with an optical module interface 102, and the optical module interface 102 is configured to be connected with the optical module 200, so that the upper computer 100 and the optical module 200 are connected by unidirectional/bidirectional electric signals; the upper computer 100 is configured to provide data signals to the optical module 200, or receive data signals from the optical module 200, or monitor and control the working state of the optical module 200.

The upper computer 100 has an external electrical interface, such as a universal serial bus interface (Universal Serial Bus, USB), a network cable interface 104, and the external electrical interface can access an electrical signal network. Illustratively, the network cable interface 104 is configured to access the network cable 103, thereby enabling the host computer 100 to establish a unidirectional/bidirectional electrical signal connection with the network cable 103.

Optical network terminals (ONU, optical Network Unit), optical line terminals (OLT, optical Line Terminal), optical network devices (ONT, optical Network Terminal), and data center servers are common upper computers.

One end of the network cable 103 is connected to the local information processing device 2000, the other end is connected to the host computer 100, and the network cable 103 establishes an electrical signal connection between the local information processing device 2000 and the host computer 100.

Illustratively, the third electrical signal sent by the local information processing apparatus 2000 is transmitted to the host computer 100 through the network cable 103, the host computer 100 generates a second electrical signal based on the third electrical signal, the second electrical signal from the host computer 100 is transmitted to the optical module 200, the optical module 200 converts the second electrical signal into a second optical signal, the optical module 200 transmits the second optical signal to the optical fiber 101, and the second optical signal is transmitted to the remote information processing apparatus 1000 in the optical fiber 101.

Illustratively, the first optical signal from the direction of the remote information processing apparatus 1000 propagates through the optical fiber 101, the first optical signal from the optical fiber 101 is transmitted into the optical module 200, the optical module 200 converts the first optical signal into a first electrical signal, the optical module 200 transmits the first electrical signal into the host computer 100, the host computer 100 generates a fourth electrical signal based on the first electrical signal, and the host computer 100 transmits the fourth electrical signal into the local information processing apparatus 2000.

The optical module is a tool for realizing the mutual conversion of the optical signal and the electric signal, and the information is not changed in the conversion process of the optical signal and the electric signal, and the encoding and decoding modes of the information can be changed.

Fig. 2 is a partial block diagram of an upper computer according to some embodiments of the present utility model. In order to clearly show the connection relationship between the optical module 200 and the host computer 100, fig. 2 only shows the structure of the host computer 100 and the optical module 200. As shown in fig. 2, the upper computer 100 further includes a PCB circuit board 105 disposed in the housing, a cage 106 disposed on a surface of the PCB circuit board 105, a heat sink 107 disposed on the cage 106, and an electrical connector (not shown in the drawing) disposed inside the cage 106, wherein the heat sink 107 has a convex structure for increasing a heat dissipation area, and the fin-like structure is a common convex structure.

The optical module 200 is inserted into the cage 106 of the host computer 100, the optical module 200 is fixed by the cage 106, and heat generated by the optical module 200 is transferred to the cage 106 and then diffused through the heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical interface of the optical module 200 is connected with an electrical connector inside the cage 106.

FIG. 3 is a block diagram of an optical module according to some embodiments of the present utility model; fig. 4 is an exploded view of an optical module according to some embodiments of the present utility model. As shown in fig. 3 and 4, the optical module 200 includes a housing (shell), a circuit board 300 disposed in the housing, a light emitting device 400, and a light receiving part 500. The present disclosure is not limited thereto and in some embodiments, the optical module 200 includes one of the light emitting part 400 and the light receiving part 500.

The housing includes an upper housing 201 and a lower housing 202, the upper housing 201 being capped on the lower housing 202 to form the above-described housing having two openings 204 and 205; the outer contour of the housing generally presents a square shape.

In some embodiments, the lower housing 202 includes a bottom plate 2021 and two lower side plates 2022 disposed on both sides of the bottom plate 2021 and perpendicular to the bottom plate 2021; the upper housing 201 includes a cover 2011, and the cover 2011 is covered on two lower side plates 2022 of the lower housing 202 to form the housing.

In some embodiments, the lower housing 202 includes a bottom plate 2021 and two lower side plates 2022 disposed on both sides of the bottom plate 2021 and perpendicular to the bottom plate 2021; the upper housing 201 includes a cover 2011, and two upper side plates disposed on two sides of the cover 2011 and perpendicular to the cover 2011, and the two upper side plates are combined with two lower side plates 2022 to cover the upper housing 201 on the lower housing 202.

The direction of the connection line of the two openings 204 and 205 may be identical to the length direction of the optical module 200 or not identical to the length direction of the optical module 200. For example, opening 204 is located at the end of light module 200 (right end of fig. 3) and opening 205 is also located at the end of light module 200 (left end of fig. 3). Alternatively, the opening 204 is located at the end of the light module 200, while the opening 205 is located at the side of the light module 200. The opening 204 is an electrical interface, and the golden finger 301 of the circuit board 300 extends out of the electrical interface 204 and is inserted into an electrical connector of the upper computer; the opening 205 is an optical port configured to access the optical fiber 101 such that the optical fiber 101 connects to the light emitting component 400 and/or the light receiving component 500 in the optical module 200.

The assembly mode of combining the upper shell 201 and the lower shell 202 is adopted, so that the circuit board 300, the light emitting component 400, the light receiving component 500 and other components can be conveniently installed in the shells, and the shapes of the components can be packaged and protected by the upper shell 201 and the lower shell 202. In addition, when the circuit board 300, the light emitting part 400, the light receiving part 500, and the like are assembled, the positioning part, the heat dissipating part, and the electromagnetic shielding part of these devices are easily disposed, which is advantageous for automating the production.

In some embodiments, the upper housing 201 and the lower housing 202 are made of metal materials, which is beneficial to electromagnetic shielding and heat dissipation.

In some embodiments, the light module 200 further comprises an unlocking member 203 located outside its housing. The unlocking part 203 is configured to realize the fixed connection between the optical module 200 and the upper computer, or to release the fixed connection between the optical module 200 and the upper computer.

For example, the unlocking member 203 is located outside the two lower side plates 2022 of the lower housing 202, and includes an engaging member that mates with the cage 106 of the upper computer. When the optical module 200 is inserted into the cage 106, the optical module 200 is fixed in the cage 106 by the engaging member of the unlocking member 203; when the unlocking member 203 is pulled, the engaging member of the unlocking member 203 moves along with the unlocking member, so as to change the connection relationship between the engaging member and the host computer, so as to release the engagement and fixed connection between the optical module 200 and the host computer, and thus the optical module 200 can be pulled out from the cage 106.

The circuit board 300 includes circuit traces, electronic components, chips, etc., and the electronic components and the chips are connected together according to a circuit design through the circuit traces to realize functions of power supply, electric signal transmission, grounding, etc. The electronic components may include, for example, capacitors, resistors, transistors, metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET). The chips may include, for example, a micro control unit (Microcontroller Unit, MCU), a laser driver chip, a transimpedance amplifier (Transimpedance Amplifier, TIA), a limiting amplifier (limiting amplifier), a clock data recovery chip (Clock and Data Recovery, CDR), a power management chip, a digital signal processing (Digital Signal Processing, DSP) chip.

The circuit board 300 is generally a hard circuit board, and the hard circuit board can also realize a bearing function due to the relatively hard material, for example, the hard circuit board can stably bear the electronic components and chips; the hard circuit board is also convenient to insert into an electric connector in the host computer cage.

The circuit board 300 further includes a gold finger 301 formed on an end surface thereof, the gold finger 301 being composed of a plurality of independent leads. The circuit board 300 is inserted into the cage 106 and is electrically connected to the electrical connector within the cage 106 by the gold finger 301. The gold finger 301 may be disposed on only one surface (such as the upper surface shown in fig. 4) of the circuit board 300, or may be disposed on both upper and lower surfaces of the circuit board 300, so as to provide more pins. The golden finger 301 is configured to establish electrical connection with an upper computer to achieve power supply, grounding, I2C signal transfer, data signal transfer, and the like.

Of course, a flexible circuit board is also used in some optical modules, and the flexible circuit board is generally used in cooperation with a hard circuit board to supplement the hard circuit board.

The lens assembly 400 is disposed on the circuit board 300, and is covered above the optical chip (the optical chip mainly refers to a light emitting chip, a driving chip, a light receiving chip, a transimpedance amplifying chip, a limiting amplifying chip and other chips related to the photoelectric conversion function) in a cover-fastening manner, the lens assembly 400 and the circuit board 300 form a cavity for wrapping the optical chip such as the light emitting chip and the light receiving chip, and the lens assembly 400 and the circuit board 300 together form a structure for packaging the optical chip. Light emitted from the light emitting chip is reflected by the lens assembly 400 and enters the optical fiber array 500, light from the optical fiber array 500 is reflected by the lens assembly 400 and enters the light receiving chip, and the lens assembly 400 establishes optical connection between the light emitting chip and the optical fiber array. The lens assembly not only serves to seal the optical chip, but also establishes an optical connection between the optical chip and the optical fiber array.

The optical connection is established between one end of the optical fiber array 500 and the lens assembly 400 through the optical fiber bracket, and the other end is established with the optical fiber connector. The optical fiber array is composed of a plurality of optical fibers, and transmits light from the lens assembly to the optical fiber connector to realize outward emission of light signals, and transmits light from the optical fiber connector to the lens assembly to realize reception of light signals from outside the optical module.

In some embodiments, the optical module is an optical transceiver, and the optical module includes an optical transceiver component, where the optical transceiver component includes an optical emission component and an optical receiving component, and the optical emission component and the optical receiving component are disposed together through a round square tube body.

Fig. 5 is a block diagram of an optical transceiver according to some embodiments of the present utility model; fig. 6 is an exploded view of an optical transceiver component according to some embodiments of the present utility model. As shown in fig. 5 and 6, the optical module includes a circular square tube 600, an optical emitting module 700a, an optical receiving module 700b, a pigtail 800a, and an optical fiber connector 900; the pigtail 800a is connected at one end to the light emitting assembly 700a and/or the light receiving assembly 700b and at the other end to the light connector 900. The optical fiber connector 900 is connected to an external optical fiber connector, and if the external optical fiber connector is connected to an external optical fiber, the connection between the pigtail 800a and the external optical fiber of the optical module is realized by the connection between the optical fiber connector 900 and the external optical fiber connector. In some embodiments, a pigtail cavity is formed within the fiber optic connector 900 to allow the pigtail 800a to pass therethrough.

In some embodiments of the present utility model, the side walls of the round and square tube 600 are formed with a first tube orifice and a second tube orifice, respectively; the first nozzle is connected to the light emitting assembly 700a, and the light emitting assembly 700a is illustratively embedded within the first nozzle; the second nozzle is connected to the light receiving assembly 700b, and the light receiving assembly 700b is illustratively embedded within the first nozzle. The light emitting assembly 700a includes a laser chip, converts a received electrical signal into an optical signal through the laser chip, and emits the optical signal; the light receiving assembly 700b includes a photodetector, converts a received optical fiber signal into an electrical signal through the photodetector, and performs transmission of the electrical signal.

In some embodiments of the present utility model, a third pipe orifice is formed on the side wall of the round square pipe body 600, and the third pipe orifice is connected with the pigtail 800 a; in some embodiments, the connection of the third nozzle to the pigtail 800a is achieved by the pigtail protective sheath 800; illustratively, the pigtail protective sleeve 800 is internally connected with the pigtail 800a, and then the pigtail protective sleeve 800 is embedded in the third nozzle. The pigtail 800a is connected with the optical emission assembly 700a, so that the generated optical signal is transmitted to the outside of the optical module; the pigtail 800a is connected to the light receiving assembly 700b so as to transmit an external optical signal to the inside of the optical module.

FIG. 7 is a block diagram of an optical fiber connector according to some embodiments of the present utility model; FIG. 8 is a cross-sectional view of a fiber optic connector according to some embodiments of the present utility model; fig. 9 is an exploded view of a fiber optic connector according to some embodiments of the present utility model. As shown in fig. 7-9, in some embodiments, the fiber optic connector 900 includes a ferrule 910, a securing member 920, a connector 930, and a fiber stub 940. The fiber guiding member 910 is used for guiding the tail fiber 800a to penetrate; the fixing member 920 is used for fixing the fiber guiding member 910 and the connecting member 930; the connector 930 is for connection with an external optical fiber connector.

The fixing member 920 is disposed between the fiber guide member 910 and the connecting member 930; one end of the fixing member 920 is connected to the fiber guide member 910, and the other end of the fixing member 920 is connected to the connection member 930. Illustratively, the fiber guide 910 is nested at one end of the fixing member 920 and the connecting member 930 is nested at the other end of the fixing member 920; the fiber ferrule 940 is disposed within the fiber guide 910, the fixing member 920, and the connecting member 930.

The end of the fiber stub 940 protrudes relative to the connector 930, which facilitates viewing the fiber-out condition of the pigtail 9000 a.

One end of the fiber guide 910 is a fiber-in end, and one end of the fiber ferrule 940 is a fiber-out end; the tail fiber 800a enters from the fiber inlet end until reaching the fiber outlet end; the end face of the pigtail 800a is aligned with the end face of the exiting end.

Fig. 10 is a block diagram of a fiber guide according to some embodiments of the present utility model. As shown in fig. 10, in some embodiments, the fiber guide 910 includes a guide section 911, a transition section 912, and a first nesting section 913 connected in sequence.

The inner diameter of the guiding section 911 is smaller than the inner diameters of the transition section 912 and the first nesting section 913 for guiding the pigtail 800a to penetrate.

The gradual change section 912 is tapered and is arranged between the guide section 911 and the first nested section 913, one end of the gradual change section 912 is connected with the guide section 911, the other end is connected with the connecting piece 913, and the inner diameter of the gradual change section 912 increases from the guide section 911 to the first nested section 913; with the insertion of the pigtail 800a, the internal space is gradually increased, so that the pigtail 800a can be more easily inserted into the fiber, and the difficulty of fiber insertion is reduced.

The larger inner diameter of the first nesting segment 913 is more advantageous for embedding into the fixture 920, enabling a nested connection of the fiber guide member 910 to the fixture 920.

Fig. 11 is a cross-sectional view of a fiber guide provided in accordance with some embodiments of the present utility model. As shown in fig. 11, a fiber insertion through hole 914 is formed in the guide section 911 and the transition section 912 to allow the tail fiber 800a to pass therethrough. Illustratively, the inner diameter of the fiber entry through hole 914 is slightly larger than the diameter of the pigtail 800a such that the pigtail 800a enters the fiber from the fiber entry through hole 914.

The first nesting section 913 has first through holes 9131, second through holes 9132, and third through holes 9133 formed therein, respectively; the second through hole 9132 is disposed between the first through hole 9131 and the third through hole 9133. Illustratively, third throughbore 9133 is a tapered throughbore with a gradual inner diameter.

The fiber-entering through hole 914, the first through hole 9131, the second through hole 9132 and the third through hole 9133 are sequentially communicated with each other to form a pigtail cavity of the fiber guiding member 910, so that the pigtail 800a passes through.

Fig. 12 is a block diagram of a fastener according to some embodiments of the present utility model. As shown in fig. 12, the fixing member 920 includes a positioning section 921, a first clamping section 922, a second clamping section 923, a first insertion section 924, and a second insertion section 925. A first clamping section 922 and a second clamping section 923 are respectively arranged on two sides of the positioning section 921; the first insert section 924 is connected to the first snap-in section 922, and the second insert section 925 is connected to the first insert section 924. The second clamping section 923 has a cavity formed therein for the pigtail 800a to pass through.

The first clamping section 922 is used for nesting the fiber guide member 910, so as to realize the clamping of the fixing member 920 and the fiber guide member 910; the second clamping section 923 is used for nesting the connecting piece 930, so as to realize the clamping connection between the fixing piece 920 and the connecting piece 930. The positioning section 921 is disposed between the first clamping section 922 and the second clamping section 923, two sides of the positioning section 921 are respectively connected with the fiber guiding member 910 and the connecting member 930, and the positioning section 921 is used for limiting the fiber guiding member 910 and the connecting member 930.

In some embodiments, the first clamping section 922 is connected to the first through hole 9131, and illustratively, the first through hole 9131 is sleeved inside the first clamping section 922.

The first insertion section 924 is connected to the second through hole 9132, and the first insertion section 924 is inserted into the second through hole 9132.

The second insertion section 925 is connected with the third through hole 9133, and the second insertion section 925 is inserted into the third through hole 9133, for example. The second insertion section 925 has a tapered cross section, and the outer circumference of the second insertion section 925 converges toward the center of the fixing member 920, that is, the outer circumference of the second insertion section 925 converges inward to conform to the shape of the third through hole 9133, thereby achieving connection of the second insertion section 925 with the third through hole 9133.

The outer circumference of the second insertion section 925 converges toward the center of the fixing member 920, which reduces the resistance when the fiber guide member 910 is nested in the fixing member 920, and reduces the difficulty in assembling the fiber guide member 910 and the fixing member 920.

In some embodiments, the cross section of the first clamping section 922 is circular, and is adapted to the shape of the first through hole 9131, so as to connect the first clamping section with the first through hole 9131, and further connect the fixing member 920 with the fiber guiding member 910.

The second clamping section 923 has a square cross section, and is adapted to the shape of the connecting member 930, so as to realize the connection between the fixing member 920 and the connecting member 930.

Fig. 13 is a second block diagram of a fastener according to some embodiments of the present utility model. As shown in fig. 13, a second insertion section 925 is formed at one end of the fixing member 920, and a notch 9251 is formed at the outer periphery of the second insertion section 925, so that the notch 9251 can reduce the friction resistance of the tail fiber 800a when entering the fiber at the second insertion section 925 and reduce the difficulty of entering the fiber of the tail fiber 800a due to the convergence of the outer periphery of the second insertion section 925.

Fig. 14 is a cross-sectional view of a fastener provided in accordance with some embodiments. As shown in fig. 14, the positioning section 921, the first clamping section 922, the first insertion section 924 and the second insertion section 925 are hollow, and are connected to form an insertion cavity 926; the insert cavity 926 and the inner cavity of the second clamping section 923 are mutually communicated to form a pigtail through cavity of the fixing member 920 so as to allow the pigtail 800a to pass through.

Fig. 15 is a first block diagram of a connector according to some embodiments of the present utility model. As shown in fig. 15, the coupling 930 includes a second nesting segment 931 and a resilient member 932. The second nesting segment 931 is embedded in the second clamping segment 923, thereby realizing the connection of the connecting member 930 and the fixing member 920. The elastic element 932 is provided on the surface of the second nesting segment 931 and has elasticity.

Fig. 16 is a second block diagram of a connector according to some embodiments of the present utility model. As shown in fig. 16, the ports of the second nesting segment 931 are formed with socket cavities 931, the socket cavities 931 extending inward.

The socket cavity 9311 is connected to the second clamping section 923, and the socket cavity 9311 is illustratively embedded on the second clamping section 923, thereby enabling connection of the connecting member 930 with the fixing member 920.

The elastic member 932 includes a pressing portion 9321, a bending portion 9322, and a locking portion 9323; the pressing portion 9321 is connected to the bending portion 9322; the locking parts 9323 are arranged in a protruding manner; when the pressing portion 9321 is pressed, the connector 930 is inserted into the external optical fiber connector, and the locking portion 9323 is locked in the external optical fiber connector, thereby connecting the optical fiber connector 900 and the external optical fiber connector.

The bending part 9322 forms a certain included angle with the cantilever where the locking part 9323 is located, and the bending part 9322 forms a bending shape with the cantilever where the locking part 9323 is located.

The bending portion 9322 is disposed obliquely toward the outer wall of the optical fiber connector 900, which is defined by the fiber guiding member 910, the fixing member 920 and the second nesting portion 931. Illustratively, the bend 9322 is at an acute angle to the horizontal axis of the second nesting segment 931. Wherein "horizontal axis" refers to the length of the second nesting segment 931 of figure 15.

Because the pigtail 800a is longer, the fiber optic connector 900 is connected to the pigtail 800a, and the pigtail 800a is wound around the fiber optic connector 900 during manufacturing or shipping; in some embodiments of the present utility model, the bending portion 9322 is inclined toward the outer wall of the optical fiber connector 900, and the gap between the end of the bending portion 9322 and the outer wall of the fiber guiding member 910 is smaller, and illustratively, the gap is smaller than the diameter of the tail fiber 800a, so that the tail fiber 800a is prevented from being wound in the gap between the elastic member 932 and the outer wall, and the outer wall is the outer wall formed by the fiber guiding member 910, the fixing member 920 and the second nesting portion 931, so that the tail fiber 800a is prevented from being broken.

The end of the bending portion 9322 is formed with an arc segment 9324, and since the tail fiber 800a is longer, the curved surface of the arc segment 9324 is smoother, so that the tail fiber 800a can be prevented from being wound into the gap between the bending portion 9322 and the fiber guiding member 910.

When the bending portion 9322 and the horizontal axis of the second nesting segment 931 are disposed at an acute angle, the end of the bending portion 9322 can relatively easily move backward when the pressing portion 9321 is pressed, so as to drive the entire bending portion 9322 to move backward, thereby not affecting the pressing of the pressing portion 9321. "rearward movement" refers to movement in the direction from coupling member 930 to fiber guide member 910 in fig. 8.

The gap between the end of the bending portion 9322 and the outer wall of the fiber guiding member 910 is smaller, but when the bending portion 9322 is disposed at an acute angle to the horizontal axis of the second nesting section 931, the bending portion 9322 can bend and move backward along the outer wall of the fiber guiding member 910 relatively easily when the pressing portion 9321 is pressed, so that the pressing portion 9321 is not affected.

Fig. 17 is a cross-sectional view of a connector according to some embodiments of the present utility model. As shown in fig. 17, a socket cavity 931, a limit groove 9312 and a fiber outlet through hole 931 are respectively formed inside the second nest segment 931; the socket cavity 9311, the limit groove 9312 and the fiber outlet through hole 9313 are mutually communicated to form a pigtail through cavity of the connector 930 for the pigtail 830a to pass through.

The socket cavity 9311 is connected to the second clamping section 923, and in some embodiments, the cross section of the socket cavity 9311 is square to adapt to the shape of the second clamping section 923, so as to realize the socket connection of the socket cavity 9311 and the second clamping section 923.

The limiting groove 9312 is used to limit the fiber stub 940 within the connector 930.

Illustratively, the pigtail 800a enters from the lead-in fiber through hole 914 to the fiber out through hole 9313, and the end face of the out through hole 9313 is flush with the end face of the pigtail 800 a.

Fig. 18 is an exploded view of an optical fiber ferrule according to some embodiments of the present utility model, and fig. 19 is a cross-sectional view of an optical fiber ferrule according to some embodiments of the present utility model. As shown in fig. 18 and 19, the optical fiber ferrule 940 includes a first extension cavity 941, a stop segment 942, and a second extension cavity 943 connected in sequence; the inner cavity of the limit section 942 is hollow; the first extension cavity 941, the inner cavity of the limiting section 942, and the second extension cavity 943 are mutually communicated to form a pigtail cavity of the fiber ferrule, so that the pigtail 800a passes through. The first extension lumen 941 has an inner diameter that is greater than the inner diameter of the second extension lumen 943.

The first extending cavity 941 is sleeved at one end of the limiting section 942, the second extending cavity 943 is inserted at the other end of the limiting section 942, and the first extending cavity 941 and the second extending cavity 943 are connected through the limiting section 942.

The end of the limit segment 942 is formed with a limit protrusion 9421, and the limit protrusion 9421 is connected to the limit groove 9312, so as to limit the optical fiber ferrule 940 in the connector 930.

The end of the limiting section 942 is formed with a notch 9422, which facilitates insertion of the second extension lumen 943 into the limiting section 942 due to the smaller inner diameter of the second extension lumen 943.

FIG. 20 is an assembly view of a fiber guide and a fastener according to some embodiments of the present utility model; fig. 21 is an exploded view of an assembly of a fiber guide and a fastener according to some embodiments of the present utility model. As shown in fig. 20 and 21, the first nesting section 913 of the fiber guide member 910 is sleeved on one end of the fixing member 820.

The fiber guide 910 has a first through hole 9131, a second through hole 9132, and a third through hole 9133 formed therein, respectively; the fixing member 920 is formed with a first clamping section 922, a first insertion section 924, and a second insertion section 925, respectively.

In some embodiments, the first through hole 9131 is connected to the first clamping section 922 in a matching manner, the second through hole 9132 is connected to the first inserting section 924 in a matching manner, and the third through hole 9133 is connected to the second inserting section 925 in a matching manner, so that the fiber guiding member 910 is limited to one side of the positioning section 921, and the fixed connection between the fiber guiding member 910 and the fixing member 920 is achieved.

Fig. 22 is an assembly view of a connector and a fixture according to some embodiments of the present utility model. As shown in fig. 22, a socket cavity 9311 is formed at an end of the connecting member 930, and a second clamping section 923 is formed at an end of the fixing member 920, in some embodiments, the socket cavity 9311 is sleeved on the second clamping section 923, so that the connecting member 930 is limited to the other side of the positioning section 921, and the fixing connection between the connecting member 930 and the fixing member 920 is achieved.

Fig. 23 is an assembly view of a connector and a fiber stub according to some embodiments of the present utility model. As shown in fig. 23, a limiting protrusion 9421 is formed inside the optical fiber ferrule 940, and a limiting groove 9312 is formed inside the connector 930; in some embodiments, the connection of the fiber stub 840 to the connector 930 is achieved by a mating connection of the retention protrusion 9421 to the retention groove 9312, thereby retaining the fiber stub 940 within the connector 930.

The foregoing is merely a specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art who is skilled in the art will recognize that changes or substitutions are within the technical scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (10)

1. An optical module, comprising:

a circuit board;

a tube case in which a light emitting part and/or a light receiving part are provided;

the tail fiber is connected with the tube shell and is used for transmitting optical signals;

an optical fiber connector for passing the pigtail, comprising:

the fiber guiding piece comprises a guiding section, a gradual change section and a first nesting section which are connected in sequence;

the fixing piece comprises a first clamping section and a second clamping section, wherein the first clamping section is connected with the first nesting section so that the fixing piece is connected with the fiber guide piece;

the connecting piece comprises a second nesting section and an elastic piece, wherein the second clamping section is connected with the second nesting section so as to enable the fixing piece to be connected with the connecting piece; the elastic piece comprises a pressing part, a locking part and a bending part, wherein the locking part is used for being connected with an external optical fiber connector; the bending part and the axis of the second nesting section are arranged at an acute angle, and the gap between the end part of the bending part and the surface of the second nesting section is not larger than the diameter of the tail fiber;

the optical fiber inserting core is arranged in the optical fiber guiding piece, the fixing piece and the connecting piece and is used for allowing the tail optical fiber to pass through.

2. The optical module according to claim 1, wherein one end of the bending portion is connected to the pressing portion, and the other end is formed with a circular arc section.

3. The light module of claim 1 wherein an inner diameter of the first nesting segment is greater than an inner diameter of the guide segment;

fiber-entering through holes are formed in the guide section and the gradual change section;

a first through hole, a second through hole and a third through hole are formed in the first nesting section respectively, wherein the second through hole is arranged between the first through hole and the third through hole;

the fiber inlet through hole, the first through hole, the second through hole and the third through hole are communicated.

4. A light module as recited in claim 3, wherein the fixture further comprises a positioning section, a first insertion section and a second insertion section;

the positioning section is arranged between the first clamping section and the second clamping section;

the first inserting section is connected with the first clamping section;

the second insertion section is connected with the first insertion section.

5. The light module of claim 4 wherein the first through hole is connected to the first snap-in section;

the second through hole is connected with the first insertion section; and

the third through hole is connected with the second insertion section so as to realize connection of the fiber guide piece and the fixing piece.

6. The light module of claim 4 wherein the second nest segment has a socket cavity formed therein;

the sleeve joint cavity is connected with the second clamping section so as to realize connection of the connecting piece and the fixing piece.

7. The optical module according to claim 6, wherein a limiting groove and a fiber outlet through hole are respectively formed in the second nesting section;

the sleeve joint cavity, the limit groove and the fiber outlet through hole are communicated.

8. The optical module of claim 7, wherein the fiber stub comprises a first extension cavity, a spacing section, and a second extension cavity connected in sequence;

the first extending cavity is connected with one end of the limiting section, and the second extending cavity is connected with the other end of the limiting section;

the limiting section is provided with a limiting protrusion, and the limiting protrusion is connected with the limiting groove so as to limit the optical fiber ferrule in the connecting piece.

9. The light module of claim 8 wherein the second insertion section is notched at an end and the stop section is notched at an end.

10. The light module of claim 9 wherein an end of the second extension lumen is disposed in protruding relation to an end of the connector.