WO2022148188A1

WO2022148188A1 - Optical module

Info

Publication number: WO2022148188A1
Application number: PCT/CN2021/134680
Authority: WO
Inventors: 姬景奇; 司宝峰; 崔伟
Original assignee: 青岛海信宽带多媒体技术有限公司
Priority date: 2021-01-08
Filing date: 2021-12-01
Publication date: 2022-07-14
Also published as: CN114755766B; CN114755766A

Abstract

Disclosed in the present invention is an optical module. The optical module comprises a lower housing, a cover plate, an unlocking component and a light guide column. A head portion of the lower housing is provided with a light guide column mounting portion and a cover plate mounting portion, the light guide column mounting portion being arranged on a side of the cover plate mounting portion. The cover plate is connected to the cover plate mounting portion in a matching manner, a spring mounting groove is provided in one side of the cover plate for mounting a spring, and a light guide column mounting groove is provided in one side opposite the spring mounting groove. The unlocking component comprises a first connecting portion, the cover plate is arranged between the cover plate mounting portion and the first connecting portion, and the first connecting portion is provided with a spring clamping hook for being connected to the spring, such that the unlocking component is connected to the lower housing. The light guide column is arranged between the light guide column mounting portion and the light guide column mounting groove, one end of the light guide column is exposed outside the lower housing and the other end of the light guide column is arranged inside the lower housing, such that the light of a signal lamp is led to the outer side of the lower housing, thereby facilitating an operation state of the optical module being directly displayed at the outside of the optical module and in turn facilitating observation.

Description

an optical module

This disclosure claims the priority of the application number 202110025539.2 and the patent name "An Optical Module" filed with the China Patent Office on January 8, 2021, the entire contents of which are incorporated in this disclosure by reference.

technical field

The present application relates to the technical field of optical communication, and in particular, to an optical module.

Background technique

New business and application models such as cloud computing, mobile Internet, and video will all use optical communication technology. The optical module realizes the function of photoelectric conversion in the field of optical communication technology, and is one of the key devices in the optical communication equipment. In order to realize the photoelectric and electro-optical conversion functions of the optical module, the optical module includes a circuit board, and many electronic components and optical components are arranged on the circuit board.

SUMMARY OF THE INVENTION

The embodiment of the present disclosure discloses an optical module, comprising: a lower casing, provided with a main board, the head of the main board is provided with: a light guide column mounting part and a cover plate mounting part; the light guide column mounting part is provided on the cover one side of the plate installation part; a cover plate, which is matched and connected with the cover plate installation part, one side is provided with a spring installation groove for installing the spring; the opposite side of the spring installation groove is provided with a light guide column installation groove; the unlocking part, It comprises a first connection part, the cover plate is arranged between the cover plate installation part and the first connection part, and the first connection part is provided with a spring hook, which is connected with the spring; and a light guide column, It is arranged between the installation part of the light guide column and the installation slot of the light guide column, one end is exposed outside the lower casing, and the other end is arranged inside the lower casing, and is used to lead the light of the signal lamp out of the lower casing outside of the body.

Description of drawings

In order to illustrate the technical solutions of the present application more clearly, the accompanying drawings that need to be used in the embodiments will be briefly introduced below. Other drawings can also be obtained from these drawings.

FIG. 1 is a connection diagram of an optical communication system according to some embodiments;

FIG. 2 is a structural diagram of an optical network terminal according to some embodiments;

3 is a structural diagram of an optical module according to some embodiments;

4 is an exploded view of an optical module according to some embodiments;

FIG. 5 is a schematic structural diagram 1 of a lower casing according to some embodiments;

Fig. 6 is the structural representation of another angle of A part among Fig. 5;

7 is a second structural schematic diagram of a lower casing according to some embodiments;

8 is a schematic cross-sectional view of a lower casing and a cover plate assembly according to some embodiments;

9 is a schematic structural diagram 1 of a cover plate according to some embodiments;

10 is a second structural schematic diagram of a cover plate according to some embodiments;

11 is a cross-sectional view of an optical module according to some embodiments;

Fig. 12 is the enlarged structural schematic diagram of part B in Fig. 11;

13 is a structural diagram of an unlocking component according to some embodiments;

FIG. 14 is a schematic structural diagram of a light guide column according to some embodiments.

Detailed ways

The technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present disclosure.

Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms such as the third person singular "comprises" and the present participle "comprising" are used It is interpreted as the meaning of openness and inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" example)" or "some examples" and the like are intended to indicate that a particular feature, structure, material or characteristic related to the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

In describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more components are in direct physical or electrical contact with each other. As another example, the term "coupled" may be used in describing some embodiments to indicate that two or more components are in direct physical or electrical contact. However, the terms "coupled" or "communicatively coupled" may also mean that two or more components are not in direct contact with each other, yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited by the content herein.

"At least one of A, B, and C" has the same meaning as "at least one of A, B, or C", and both include the following combinations of A, B, and C: A only, B only, C only, A and B , A and C, B and C, and A, B, and C.

"A and/or B" includes the following three combinations: A only, B only, and a combination of A and B.

The use of "adapted to" or "configured to" herein means open and inclusive language that does not preclude devices adapted or configured to perform additional tasks or steps.

As used herein, "about", "approximately" or "approximately" includes the stated value as well as the average value within an acceptable range of deviation from the specified value, as described by one of ordinary skill in the art Determined taking into account the measurement in question and the errors associated with the measurement of a particular quantity (ie, limitations of the measurement system).

In optical communication technology, light is used to carry the information to be transmitted, and the optical signal carrying the information is transmitted to information processing equipment such as computers through information transmission equipment such as optical fibers or optical waveguides to complete the transmission of information. Since optical signals have passive transmission characteristics when transmitted through optical fibers or optical waveguides, low-cost and low-loss information transmission can be achieved. In addition, the signals transmitted by information transmission equipment such as optical fibers or optical waveguides are optical signals, while the signals that can be recognized and processed by information processing equipment such as computers are electrical signals. To establish an information connection between them, it is necessary to realize the mutual conversion of electrical signals and optical signals.

The optical module realizes the mutual conversion function of the above-mentioned optical signal and electrical signal in the technical field of optical fiber communication. The optical module includes an optical port and an electrical port. The optical module realizes optical communication with information transmission equipment such as optical fibers or optical waveguides through the optical port, and realizes electrical connection with an optical network terminal (for example, an optical cat) through the electrical port. It is mainly used to realize power supply, I2C signal transmission, data signal transmission and grounding; optical network terminals transmit electrical signals to information processing equipment such as computers through network cables or wireless fidelity technology (Wi-Fi).

FIG. 1 is a connection diagram of an optical communication system according to some embodiments. As shown in FIG. 1 , the optical communication system mainly includes a remote server 1000, a local information processing device 2000, an optical network terminal 100, an optical module 200, an optical fiber 101 and a network cable 103;

One end of the optical fiber 101 is connected to the remote server 1000 , and the other end is connected to the optical network terminal 100 through the optical module 200 . The optical fiber itself can support long-distance signal transmission, such as signal transmission of several kilometers (6 kilometers to 8 kilometers). On this basis, if repeaters are used, ultra-long distance transmission can theoretically be achieved. Therefore, in a common optical communication system, the distance between the remote server 1000 and the optical network terminal 100 can usually reach several kilometers, tens of kilometers or hundreds of kilometers.

One end of the network cable 103 is connected to the local information processing device 2000 , and the other end is connected to the optical network terminal 100 . The local information processing device 2000 may be any one or more of the following devices: a router, a switch, a computer, a mobile phone, a tablet computer, a television, and the like.

The physical distance between the remote server 1000 and the optical network terminal 100 is greater than the physical distance between the local information processing device 2000 and the optical network terminal 100 . The connection between the local information processing device 2000 and the remote server 1000 is completed by the optical fiber 101 and the network cable 103 ; and the connection between the optical fiber 101 and the network cable 103 is completed by the optical module 200 and the optical network terminal 100 .

The optical module 200 includes an optical port and an electrical port. The optical port is configured to be connected to the optical fiber 101, so that the optical module 200 and the optical fiber 101 can establish a two-way optical signal connection; electrical signal connection. The optical module 200 realizes the mutual conversion of optical signals and electrical signals, so as to establish a connection between the optical fiber 101 and the optical network terminal 100 . For example, the optical signal from the optical fiber 101 is converted into an electrical signal by the optical module 200 and then input into the optical network terminal 100 , and the electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module 200 and input into the optical fiber 101 .

The optical network terminal 100 includes a substantially rectangular housing, and an optical module interface 102 and a network cable interface 104 disposed on the housing. The optical module interface 102 is configured to access the optical module 200, so that the optical network terminal 100 and the optical module 200 can establish a bidirectional electrical signal connection; the network cable interface 104 is configured to access the network cable 103, so that the optical network terminal 100 and the network cable 103 are connected. Establish a two-way electrical signal connection. A connection is established between the optical module 200 and the network cable 103 through the optical network terminal 100 . For example, the optical network terminal 100 transmits the electrical signal from the optical module 200 to the network cable 103, and transmits the signal from the network cable 103 to the optical module 200. Therefore, the optical network terminal 100, as the host computer of the optical module 200, can monitor the optical module 200. work. In addition to the optical network terminal 100, the host computer of the optical module 200 may also include an optical line terminal (Optical Line Terminal, OLT) and the like.

A bidirectional signal transmission channel is established between the remote server 1000 and the local information processing device 2000 through the optical fiber 101 , the optical module 200 , the optical network terminal 100 and the network cable 103 .

FIG. 2 is a structural diagram of an optical network terminal according to some embodiments. In order to clearly show the connection relationship between the optical module 200 and the optical network terminal 100 , FIG. 2 only shows the optical network terminal 100 related to the optical module 200 . structure. As shown in FIG. 2 , the optical network terminal 100 further includes a PCB circuit board 105 disposed in the housing, a cage 106 disposed on the surface of the PCB circuit board 105 , and an electrical connector disposed inside the cage 106 . The electrical connector is configured to be connected to the electrical port of the optical module 200 ; the heat sink 107 has protrusions such as fins that increase the heat dissipation area.

The optical module 200 is inserted into the cage 106 of the optical network terminal 100 , and the optical module 200 is fixed by the cage 106 . After the optical module 200 is inserted into the cage 106 , the electrical port of the optical module 200 is connected to the electrical connector inside the cage 106 , so that the optical module 200 and the optical network terminal 100 establish a bidirectional electrical signal connection. In addition, the optical port of the optical module 200 is connected to the optical fiber 101 , so that the optical module 200 and the optical fiber 101 establish a bidirectional electrical signal connection.

FIG. 3 is a structural diagram of an optical module according to some embodiments, and FIG. 4 is an exploded view of an optical module according to some embodiments. As shown in FIG. 3 and FIG. 4 , the optical module 200 includes an upper casing 300 , a lower casing 400 , an unlocking part 500 , a circuit board 201 and an optical transceiver.

The upper casing 300 is closed on the lower casing 400 to form the above-mentioned casing having two

openings

204 and 203 ; the outer contour of the casing generally presents a square shape.

In some embodiments of the present disclosure, the lower casing 400 includes a bottom plate and two lower side plates located on both sides of the bottom plate and perpendicular to the bottom plate; the upper casing 300 includes a cover plate, and two sides of the cover plate are perpendicular to the cover plate. The two upper side panels are combined with the two side panels by the two side walls to realize that the upper casing 300 is covered on the lower casing 400 .

The direction of the connection between the two

openings

204 and 203 may be consistent with the length direction of the optical module 200 , or may be inconsistent with the length direction of the optical module 200 . For example, the opening 204 is located at the end of the optical module 200 (the right end in FIG. 3 ), and the opening 203 is also located at the end of the optical module 200 (the left end in FIG. 3 ). Alternatively, the opening 204 is located at the end of the optical module 200 , and the opening 203 is located at the side of the optical module 200 . The opening 204 is an electrical port, and the golden fingers of the circuit board 201 protrude from the electrical port 204 and are inserted into the host computer (such as the optical network terminal 100 ); The optical fiber 101 is connected to the optical transceiver device inside the optical module 200 .

The combination of the upper casing 300 and the lower casing 400 is used to facilitate the installation of the circuit board 201, optical transceivers and other devices into the casing. The upper casing 300 and the lower casing 400 can form encapsulation protection for these devices. In addition, when assembling components such as the circuit board 201, it is convenient to deploy the positioning components, heat dissipation components and electromagnetic shielding components of these components, which is conducive to the implementation of automated production.

In some embodiments, the upper casing 300 and the lower casing 400 are generally made of metal material, which is beneficial to achieve electromagnetic shielding and heat dissipation.

In some embodiments, the optical module 200 further includes an unlocking component 500 located on the outer wall of the housing thereof. The unlocking component 500 is configured to realize a fixed connection between the optical module 200 and the host computer, or release the connection between the optical module 200 and the host computer. fixed connection.

For example, the unlocking components 500 are located on the outer walls of the two lower side panels of the lower casing 400, and include engaging components matching with the cage of the upper computer (eg, the cage 106 of the optical network terminal 100). When the optical module 200 is inserted into the cage of the upper computer, the optical module 200 is fixed in the cage of the upper computer by the engaging part of the unlocking part 500; when the unlocking part 500 is pulled, the engaging part of the unlocking part 500 moves accordingly, thereby changing the The connection relationship between the engaging member and the host computer is used to release the engaging relationship between the optical module 200 and the host computer, so that the optical module 200 can be pulled out from the cage of the host computer.

The circuit board 201 includes circuit traces, electronic components and chips, and the electronic components and chips are connected together according to the circuit design through the circuit traces to realize functions such as power supply, electrical signal transmission, and grounding. The electronic components may include, for example, capacitors, resistors, triodes, and metal-oxide-semiconductor field-effect transistors (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET). The chip may include, for example, a Microcontroller Unit (MCU), a limiting amplifier (limiting amplifier), a clock and data recovery chip (Clock and Data Recovery, CDR), a power management chip, and a digital signal processing (Digital Signal Processing, DSP) chip .

The circuit board 201 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also realize the bearing function. For example, the rigid circuit board can carry the chip smoothly; the rigid circuit board can also be inserted into the electrical connector in the upper computer cage. .

The circuit board 201 also includes gold fingers formed on the end surfaces thereof, and the gold fingers are composed of a plurality of pins that are independent of each other. The circuit board 201 is inserted into the cage 106 , and is electrically connected to the electrical connector in the cage 106 by gold fingers. Gold fingers can be arranged only on one surface of the circuit board 201 (eg, the upper surface shown in FIG. 4 ), or can be arranged on the upper and lower surfaces of the circuit board 201 , to meet the needs of a large number of pins. The golden finger is configured to establish an electrical connection with the upper computer to realize power supply, grounding, I2C signal transmission, data signal transmission, and the like. Of course, flexible circuit boards are also used in some optical modules. Flexible circuit boards are generally used in conjunction with rigid circuit boards as a supplement to rigid circuit boards.

5 is a schematic structural diagram 1 of a lower case according to some embodiments, FIG. 6 is a schematic structural diagram of part A in FIG. 5 from another angle, and FIG. 7 is a structural schematic diagram 2 of a lower case according to some embodiments 8 is a schematic cross-sectional view of a lower casing and a cover plate assembly according to some embodiments.

As shown in FIGS. 5 , 6 and 7 , the lower case 400 according to some embodiments includes a main plate 410 , a first side plate 420 and a second side plate 430 , and the first side plate 420 is located on one side of the main plate 410 in the length direction , the second side plate 430 is located on the other side of the main board 410 in the length direction. The head of the first side plate 420 and the head of the second side plate 430 are recessed toward the inside of the optical module, and the width of the head of the lower case 400 is slightly narrower than other parts.

As shown in FIG. 5 and FIG. 6 , the head portion of the first side plate 420 is provided with a first installation groove 421 , and the middle portion of the first side plate 420 is provided with a first groove 422 and a first locking groove 423 . The first installation groove 421 , the first groove 422 and the first locking groove 423 are provided to facilitate the installation of the unlocking component 500 . The first locking groove 423 is used to limit the position of the tail of the unlocking component 500 to prevent the unlocking of the optical module and the displacement of the unlocking component 500 from exceeding the limit during the locking process. The head of the first side plate 420 is close to the optical port of the optical module, and the tail is far away from the optical port of the optical module.

In the embodiment of the present disclosure, the head of the main board 410 is provided with a light guide column mounting portion 460 , a cover plate mounting portion 440 and a cover plate 450 . In order to facilitate the installation of the light guide rod 600 , the light guide rod mounting portion 460 is disposed on one side of the head of the main board 410 , and the cover plate mounting portion 440 is disposed on the other side of the head of the main board 410 . The cover plate 450 is disposed above the light guide column mounting portion 460 and the cover plate mounting portion 440 , and is used for position limitation of the light guide column 600 and the cover plate 450 .

In some embodiments of the present disclosure, in order to facilitate the assembly and connection of the upper casing 300 and the lower casing 400 , the lower casing 400 further includes a lower casing connecting portion 470 , and the lower casing connecting portion 470 is disposed at the right end of the cover plate 450 , the top surface of the lower case connecting portion 470 is lower than the bottom surface of the cover plate 450 . The cover plate mounting portion 440 includes a first mounting baffle plate 441 disposed on the head of the main board 410 for limiting the position of the cover plate 450 and preventing the cover plate 450 from coming out. A cover plate mounting groove is formed between the first mounting baffle 441 and the lower case connecting portion 470 for placing the cover plate 450 . A second baffle is provided on the side where the lower casing connecting portion 470 is connected to the cover plate 450 , and the second baffle divides the lower casing 400 into two parts, the inner and outer parts.

A light guide column through hole 471 is provided at the connecting position of the second baffle of the lower casing connecting portion 470 and the light guide column mounting portion 460 , which communicates the inside and the outside of the lower casing, and is used for installing the light guide column 600 .

The cover plate mounting portion 440 is further provided with a cover plate limiting rib 442 for limiting the position of the cover plate 450 and facilitating the installation and positioning of the cover plate 450 . In some embodiments of the present disclosure, the cover plate restraining rib 442 is disposed along the length direction of the main board 410 and is disposed in the center of the cover plate mounting portion 440 to avoid position deviation and unbalance of the cover plate during installation. In order to connect the cover plate 450 with the main board 410 , at least one cover plate mounting hole 443 is provided on the cover plate limiting rib 442 .

As shown in FIG. 7 , the head portion of the second side plate 430 is provided with a second installation groove 431 , and the middle portion of the second side plate 430 is provided with a second groove 432 and a second locking groove 433 . The second groove 432 and the second locking groove 433 are provided to facilitate the installation of the unlocking component 500 . The second locking groove 433 is used to limit the position of the tail of the unlocking component 500 to prevent the unlocking of the optical module and the displacement of the unlocking component 500 from exceeding the limit during the locking process. The second groove 432 cooperates with the first groove 422 and the second locking groove 433 cooperates with the first locking groove 423 , so that the use of the unlocking component 500 is more reliable.

As shown in FIG. 8 , a first chute 411 is provided on the inner wall of the middle of the main board 410 (here, the inner wall of the encapsulation cavity), which is used to define the position of the light guide column 600 inside the encapsulation cavity. In order to facilitate installation, one end of the first sliding slot 411 is connected to the light guiding column mounting portion 460 through the light guiding column through hole 471, and the central axis of the first sliding slot 411 is coaxial with the central axis of the groove of the light guiding column mounting portion 460. .

FIG. 9 is a first structural schematic diagram of a cover plate according to some embodiments, FIG. 10 is a second structural schematic diagram of a cover plate according to some embodiments, and FIG. 11 is a cross-sectional view of an optical module according to some embodiments. 12 is an enlarged schematic structural diagram of part B in FIG. 11 . 9 , 10 , 11 and 12 , one side of the cover plate 450 is provided with a cover plate mounting groove 451 , which is connected with the cover plate limit ribs 442 for position limitation of the cover plate 450 on the main board 410 . Correspondingly, an installation hole 452 is provided at the bottom of the cover plate installation slot 451 , which corresponds to the position of the cover plate installation hole 443 and is used for the installation of the cover plate 450 . In some embodiments of the present disclosure, in order to keep the surface of the cover plate 450 flat and facilitate the installation of the unlocking component 500 , the installation holes 452 are countersunk holes, and the screws sink after installation to avoid protrusions.

The cover plate 450 is further provided with a light guide column limiting groove 453 , which is located at the edge of the cover plate 450 and is arranged in cooperation with the light guide column mounting portion 460 . After the cover plate 450 is closed to the cover plate mounting portion 440 , the light guide rod 600 is disposed in the cavity formed by the light guide rod limiting groove 453 and the light guide rod mounting portion 460 . In order to realize the above functions, the light guide column limiting slot 453 and the cover plate mounting slot 451 are disposed on the side of the cover plate 450 close to the cover plate mounting portion 440 . A first spring installation groove 454 and a second spring installation groove 455 are provided on the other side of the cover plate 450 . The first spring installation groove 454 is installed in the first spring, and the second spring installation groove 455 is installed in the second spring. The end of the first spring mounting groove 454 is provided with a first spring mounting portion 456 for connecting and fixing the first spring with the cover plate 450 and restricting the movement of the first spring in a direction perpendicular to the main board 410 . In some embodiments of the present disclosure, the first spring mounting portion 456 may be a positioning hole or a positioning post. Similarly, a second spring mounting portion 457 is provided at the end of the second spring mounting groove 455 to realize the connection and fixation of the second spring and the cover plate 450 and restrict the movement of the first spring in the direction perpendicular to the main board 410 .

In some embodiments of the present disclosure, the light guide rod limiting groove 453 is further provided with a boss 4531 , which is structurally matched with the light guide rod 600 and is used for fixing the light guide rod 600 . A signal light 202 is set on the circuit board 201 to display the running state of the circuit board. One end of the light guide column 600 is provided with a curved portion, which is covered on one side of the signal light 202 and used to lead the light of the signal light out of the lower casing.

In order to facilitate the installation and use reliability of the optical module provided by the embodiment of the present disclosure, the embodiment of the present disclosure provides an unlocking component. 13 is a structural diagram of an unlocking component according to some embodiments. As shown in FIG. 13 , the unlocking part 500 according to some embodiments includes a handle 510 and an unlocker 520 , the unlocker 520 is connected to the lower case 400 , and one end of the handle 510 is connected to one end of the unlocker 520 . The handle 510 is used to facilitate the dragging of the unlocking component 500 , and the dragging of the handle 510 drives the unlocker 520 to move. To facilitate dragging the handle 510 to connect to the unlocker 520 , the handle 510 is provided with a first connection portion 511 , and the handle 510 is connected to the unlocker 520 through the first connection portion 511 . The other end of the unlocker 520 is provided with a locking hook, and the locking hook is used to realize the mechanical connection between the optical module and the cage, and realize the locking of the optical module and the cage.

In some embodiments of the present disclosure, the unlocker 520 includes a first unlocking part 521 and a second unlocking part 522 . One end of the first unlocking part 521 is connected to the handle 510 , and the other end of the first unlocking part 521 is used to cooperate with the first side plate 420 ; One end of the second unlocking portion 522 is connected to the handle, and the other end of the second unlocking portion 522 is used to cooperate with the second side plate 430 ;

One end of the first unlocking portion 521 and one end of the second unlocking portion 522 are respectively connected to the first connecting portion 511 , and then the handle 510 is dragged. The handle 510 drives the first unlocking portion 521 on the first side plate 420 through the first connecting portion 511 . Move and drive the second unlocking portion 522 to move on the second side plate 430 .

In the embodiment of the present disclosure, the other end of the first unlocking portion 521 is provided with a first locking hook 523, and the first locking hook 523 is used for locking the first unlocking portion 521 with the cage; one end of the second unlocking portion 522 A second locking hook 524 is also provided, and the second locking hook 524 is used for locking the second unlocking portion 522 with the cage. The first locking hook 523 on the first unlocking part 521 and the second locking hook 524 on the second unlocking part 522 are combined to realize the locking of the optical module and the cage, so as to ensure the locking firmness of the optical module and the cage. At the same time, in the process of unlocking the optical module and the cage, the force of the unlocking component 500 is balanced, so as to ensure the service life of the unlocking component 500 .

One side of the first connecting portion 511 is provided with a first spring hook 5111 and a second spring hook 5112. The first spring hook 5111 and the second spring hook 5112 are bent toward the inside of the unlocking part 500 for the unlocking part 500 and the second spring hook 5112. The installation of the main board 410 is fixed.

The first connecting portion 511 covers the top of the cover plate 450 , and the first spring hook 5111 is embedded in the first spring mounting groove 454 to connect with the first spring, and press the first spring. The second spring hook 5112 is embedded in the second spring mounting groove 455 and connected to the second spring, and presses the second spring. The first spring hooks 5111 and the second spring hooks 5112 are correspondingly arranged, so as to ensure that the unlocking component 500 receives a balanced force during the process of unlocking the optical module, facilitates unlocking the optical module and helps to ensure the service life of the unlocking component 500 . The first connecting portion 511 is flush with the top surface of the connecting portion 470 of the lower case.

In some embodiments of the present disclosure, the first spring mounting groove 454 and the second spring mounting groove 455 are symmetrically arranged on the cover plate 450 , and the first unlocking portion 521 and the second unlocking portion 522 are symmetrical about the central axis of the unlocking member 500 . .

Referring to FIG. 3 , the first unlocking portion 521 is connected to the first side plate 420 , the second unlocking portion 522 is connected to the second side plate 430 , and the first connection portion 511 is located at the bottom of the lower case 400 . The first spring hook 5111 is embedded in the first spring mounting groove 454 , the second spring hook 5112 is embedded in the second spring mounting groove 455 , and the lower case connecting portion 470 protrudes relative to the cover plate 450 , forming an edge for the unlocking member 500 . The limit in the length direction of the main board 410 . The tail portion of the first unlocking portion 521 is engaged with the first groove 422 , and the tail portion of the second unlocking portion 522 is engaged with the second groove 432 .

When there is no relative displacement between the unlocking member 500 and the lower casing 400, the first locking hook 523 is located in the first locking groove 423, and the end of the first locking hook 523 abuts against the bottom surface of the first locking groove 423, The second locking hook 524 is located in the second locking groove 433 , and the end of the second locking hook 524 abuts against the bottom surface of the second locking groove 433 . When the unlocking member 500 and the lower case 400 are displaced relative to each other, the end of the first locking hook 523 is separated from the bottom surface of the first locking groove 423 , and the end of the second locking hook 524 is separated from the bottom of the second locking groove 433 . underside. Therefore, the first locking groove 423 has a blocking and limiting effect on the first locking hook 523, and the second locking groove 433 has a blocking and limiting effect on the second locking hook 524, effectively preventing the unlocking of the first spring and the During the second spring recovery process, the first unlocking portion 521 is separated from the first side plate 420 and the second unlocking portion 522 is separated from the second side plate 430 .

During the unlocking process of the optical module, pull the handle 510, and the handle 510 drives the unlocker 520 to move through the first connecting part 511, and the unlocker 520 moves to make the first locking hook 523 of the first unlocking part 521 and the second unlocking part 522 move. The second locking hook 524 is disconnected from the mechanical connection of the cage, thereby unlocking the optical module and the cage; and during the process of the first locking hook 523 and the second locking hook 524 being mechanically connected and disconnected from the cage, the unlocker 520 The movement makes the first spring hook 5111 squeeze the first spring, and the second spring hook 5112 squeezes the second spring to deform the first spring and the second spring; when the mechanical connection between the locking hook and the cage is disengaged, the first A spring and a second spring are deformed to restore the lower casing 400 to move in the pulling direction of the handle 510 , so that the unlocking part 500 is reset on the lower casing 400 , and then the optical module is released from the cage.

FIG. 14 is a schematic structural diagram of a light guide column according to some embodiments. As shown in FIG. 14 and FIG. 3 , in some embodiments, in order to prevent the light guide rod 600 from rotating in the light module and affecting the light guide efficiency, the end face of the light guide rod 600 is not set to be circular. In some embodiments of the present disclosure, as shown in the figures, the end face of the light guide column 600 may be set in a "D" shape, or a semicircle. The light guide column 600 includes a first light guide portion 610 and a second light guide portion 620 that are vertically connected to each other. One end of the first light guide portion 610 is exposed outside the lower casing 400 , and the other end is connected to the second light guide portion 620 . . One end of the second light guide portion 620 is connected to the first light guide portion 610, and the other end is provided above the signal lamp with a cover. The second light guide portion 620 is bent relative to the first light guide portion. A signal light 202 is set on the circuit board 201 to display the running state of the circuit board. The second light guide 620 is covered on one side of the signal light 202 and used to guide the light of the signal light out of the lower casing.

The outer surface of the first light guide part 610 is set as a light guide plane 611 and a light guide curved surface 612 , the light guide curved surface 612 is matched and connected with the main board 410 of the lower casing 400 , and the light guide plane 611 is connected with the light guide column limit groove on the cover plate. 453. The first chute 411 is matched and connected. In order to prevent the light guide rod 600 from falling out, the light guide rod 600 is further provided with a non-return portion 630 located between the first light guide portion 610 and the second light guide portion 620 . The cross-sectional dimension of the return portion 630 is larger than the area of the light guide rod through hole, so that the non-return portion 630 cannot pass through the light guide rod through hole. The light guide plane 611 is also provided with a groove 613 for mating connection with the boss 4531 . One end of the light guide column 600 is exposed outside the lower casing 400 for displaying the operating status of the optical module; the other end is arranged in the encapsulation cavity formed by the combination of the upper casing 300 and the lower casing 400, and the signal lamp is arranged in the projection of the end face of the light guide column.

When installing the light guide column 600, the light guide column 600 is embedded from the inside of the lower casing 400, and slides along the first chute 411 to the head of the lower casing 400. During installation, the light guide curved surface 612 of the light guide column 600 is embedded in the first chute 411, the light guide plane 611 is located outside the first chute 411 to prevent the light guide column 600 from rotating during the installation process. The light guide rod 600 slides into the light guide rod limit slot 453 through the light guide rod through hole in the head of the lower casing 400 until the check part 630 is clamped to one side of the light guide rod through hole, and the positioning of the light guide rod 600 is completed.

The installation process of the entire optical module is as follows: firstly install the light guide column 600, then install the cover plate 450 to the cover plate mounting part 440, the cover plate installation groove 451 cooperates with the cover plate limit rib 442, and the groove 613 cooperates with the boss 4531. Connect; then use screws to connect the cover plate 450 to the cover plate mounting portion 440 through the cover

plate mounting holes

443 and 452 to realize the connection between the cover plate and the lower casing. The first connecting portion 511 of the unlocking member 500 covers the top of the cover plate 450, and the first spring hook 5111 is embedded in the first spring mounting groove 454 to connect with the first spring and squeeze the first spring. The second spring hook 5112 is embedded in the second spring installation groove 455 and connected to the second spring, and squeezes the second spring to achieve preloading. The first unlocking portion 521 cooperates with the first side plate 420, and the second unlocking portion 522 cooperates with the second side plate 430, so as to realize the connection between the unlocking component and the lower casing.

One end of the assembled light guide column 600 is exposed on the outside of the lower casing, and the light of the signal lamp on the circuit board can be led out to the outside of the lower casing, so that the operating state of the optical module can be directly displayed outside the casing. The light guide column is arranged on one side of the cover plate, which is convenient for installation.

In the embodiment of the present disclosure, the head of the main board is defined as a position close to the optical port, and the light of the signal lamp is led out of the outer side of the lower casing, which actually means that the light is led out to the outer side of the envelope cavity formed by the lower casing and the lower casing of the optical module, Easy to observe.

Since the above embodiments are all cited and combined with other modes for description, different embodiments all have the same parts, and the same and similar parts among the various embodiments in this specification can be referred to each other. It will not be elaborated here.

It should be noted that, in this specification, relational terms such as "first" and "second" etc. are only used to distinguish one entity or operation from another entity or operation, and are not necessarily required or implied Any such actual relationship or ordering exists between these entities or operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a circuit structure, article or device comprising a list of elements includes not only those elements, but also not expressly listed Other elements, or elements inherent to such a circuit structure, article, or device are also included. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the circuit structure, article or device that includes the element.

Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common general knowledge or techniques in the technical field not disclosed by this disclosure . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the disclosure being indicated by the content of the claims.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical scope disclosed in the present disclosure, think of changes or replacements, should cover within the scope of protection of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

An optical module, characterized by comprising: an upper casing;

A lower casing, an optical port is arranged on one side of the lower casing, a light guide column mounting portion and a cover plate mounting portion are arranged at the bottom of the optical port, and the light guide column mounting portion is arranged on one side of the cover plate mounting portion. side; the other side of the lower casing is covered with the upper casing to form a wrapping cavity;

a circuit board, which is arranged in the encapsulation cavity, and a signal lamp is arranged on the circuit board;

a cover plate, which is matched and connected with the cover plate installation part, and a light guide column installation groove is arranged on one side;

a light guide column, arranged between the light guide column installation part and the light guide column installation groove; one end of the light guide column is located outside the package cavity, and the other end is provided with a curved part, and the curved part is arranged on the package Inside the cavity, the curved portion faces the signal light, and is used to lead the light of the signal light out of the package cavity.
The optical module according to claim 1, wherein the cover plate mounting portion is provided with a cover plate limit rib; the cover plate includes a cover plate installation groove, which is matched and connected with the cover plate limit rib.
The optical module according to claim 1, wherein the light guide column is a non-cylindrical structure, and a groove is provided on one side; the light guide column installation groove includes a boss, which is cooperatively connected with the groove and used for at the limit of the light guide column.
The optical module according to claim 3, wherein the end face of the curved portion is parallel to the circuit board, and the signal lamp is disposed in the projection of the curved portion on the circuit board.
The optical module according to claim 1, wherein the lower case further comprises a lower case connecting portion, and a second baffle plate is included between the cover plate mounting portion and the lower case connecting portion.
The optical module according to claim 5, wherein the second baffle is provided with a light guide column through hole, which is connected with the light guide column installation groove; The light guide column installation groove is communicated and used for installing the light guide column.
The optical module according to claim 1, further comprising: an unlocking part including a first connecting part, the cover plate is disposed between the cover plate mounting part and the first connecting part, and the The first connecting part is provided with a spring hook, which is connected with the spring;

A first spring installation slot and a second spring installation slot are arranged on the opposite side of the light guide column installation slot, a first spring is arranged in the first spring installation slot, and a second spring is arranged in the second spring installation slot;

One side of the first connecting part is provided with a first spring hook and a second spring hook, the first spring hook is embedded in the first spring installation groove and connected with the first spring; the first spring hook is Two spring hooks are embedded in the second spring installation groove and connected with the second spring.
The optical module according to claim 7, wherein one end of the first spring mounting groove is provided with a first spring mounting portion, which is connected to one end of the first spring, and the other end of the first spring is connected to the first spring. A spring hook connection;

One end of the second spring mounting groove is provided with a second spring mounting portion, which is connected with one end of the second spring, and the other end of the second spring is connected with the second spring hook.
The optical module according to claim 7, wherein the lower casing comprises: a main board;

a first side plate, arranged on one side of the main board in the length direction;

and a second side plate, arranged on the other side of the length of the main board;

The unlocking component further includes: a first unlocking part connected with the first connecting part, and the first unlocking part is connected with the first side plate; and a second unlocking part, connected with the first The first unlocking portion is symmetrical with respect to the spring hook, and the second unlocking portion is connected with the second side plate.
The optical module according to claim 1, wherein the cover plate is provided with a cover plate mounting hole, and is connected with the cover plate mounting portion by screws.