CN211554394U - Optical module - Google Patents

Abstract

The optical module shown in the embodiment of the application comprises an upper shell and a lower shell. An unlocking component used for being mutually locked with the switch is arranged on the side wall of the upper shell, and an elastic part concave part is arranged on the upper surface of the upper shell. The unlocking component comprises two cantilevers which are respectively attached to the side wall of the upper shell so as to realize movable sliding of the locking component and the upper shell. The locking component also comprises a suspension beam used for connecting the two cantilevers, a clamping hook is arranged on the side wall of the suspension beam, the free end of the clamping hook bends downwards to enable the free end to extend into the concave part of the elastic part, the elastic part is positioned in the concave part of the elastic part, one end of the elastic part is in limit contact with the inner wall of the concave part of the elastic part, and the other end of the elastic part is in contact with the clamping hook; the cantilever is pulled to slide on the side wall of the upper shell so as to unlock the optical module from the upper computer, and meanwhile, the hook compresses the elastic piece; and the cantilever is loosened, so that the clamping hook rebounds under the acting force of the elastic piece, and the clamping hook drives the cantilever to reset through the cantilever beam.

Description

Optical module

Technical Field

The embodiment of the application relates to the optical communication technology. And more particularly, to a light module.

Background

An optical module is a core device that transmits optical signals through optical fibers in an optical fiber network. The SFP (Small Form-Factor plug) optical module is matched and plugged with an SFP interface in the switch cage to realize the receiving and sending of optical signals, and the SFP optical module has hot plugging property, so that the SFP optical module can be connected or disconnected with the switch cage without cutting off the power supply of optical fiber equipment, so that the optical fiber network system can be updated in time, and the influence on the use of an online user is avoided, and therefore, the SFP optical module is widely applied to the technical field of optical communication.

When the optical module is installed in the cage of the switch, the stop wall on the shell of the optical module is clamped with the card in the cage of the switch, so that the optical module is locked in the cage; when the optical module is pulled out of the cage of the switch and disconnected, the locking component of the optical module is pulled to separate the card from the stop wall, so that the optical module can be smoothly pulled out of the cage to unlock the optical module, and the locking component in the optical module needs to be reset after the optical module is unlocked.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an optical module to unlock the optical module and a switch.

An embodiment of the present application shows an optical module, including:

a circuit board; the upper shell and the lower shell are combined to form a cavity for bearing the circuit board; an elastic piece sunken part is arranged on the upper surface of the upper shell, and the elastic piece sunken part does not penetrate through the upper shell; an unlocking member provided on an outer wall of the upper case, including: the two cantilevers are respectively attached to two side walls of the upper shell and can slide on the side walls of the upper shell; a cantilever beam bridging between the two cantilevers to connect the two cantilevers; the connecting end of the clamping hook is arranged on the side wall of the suspension beam, and the free end of the clamping hook is bent towards the surface direction of the upper shell so as to extend into the concave part of the elastic piece; an elastic member located in the elastic member recess, covered by the suspension beam; one end of the elastic part can be limited by the inner wall of the concave part of the elastic part, and the other end of the elastic part can be extruded by the free end of the clamping hook.

The optical module shown in the embodiment of the application comprises an upper shell and a lower shell. The cavity formed by the upper shell and the lower shell is internally provided with a circuit board used for bearing and connecting the photoelectric device. An unlocking component used for being mutually locked with the switch is arranged on the side wall of the upper shell, and an elastic part concave part is arranged on the upper surface of the upper shell. The unlocking component comprises two cantilevers which are respectively attached to the side wall of the upper shell so as to realize movable sliding of the locking component and the upper shell. The locking component also comprises a suspension beam used for connecting the two cantilevers, a clamping hook is arranged on the side wall of the suspension beam, the free end of the clamping hook bends downwards to enable the free end to extend into the concave part of the elastic part, the elastic part is positioned in the concave part of the elastic part, one end of the elastic part is in limit contact with the inner wall of the concave part of the elastic part, and the other end of the elastic part is in contact with the clamping hook; the cantilever is pulled to slide on the side wall of the upper shell so as to unlock the optical module from the upper computer, and meanwhile, the hook compresses the elastic piece; the cantilever is loosened, so that the clamping hook rebounds under the acting force of the elastic piece, the clamping hook drives the cantilever to reset through the suspension beam, the suspension beam covers the upper part of the elastic piece, and the elastic piece is enabled to be not prone to sliding off from the concave part of the elastic piece in the compression and release processes.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram of a connection relationship of an optical communication terminal;

FIG. 2 is a schematic diagram of an optical network unit;

fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present disclosure;

fig. 4 is an exploded schematic view of an optical module structure according to an embodiment of the present application;

FIG. 5 is a structural view of an unlocking member provided in an embodiment of the present application;

FIG. 6 is a front view of the unlocking member shown in FIG. 5;

fig. 7 is a schematic structural diagram of an upper housing according to an embodiment of the present application;

FIG. 8 is a top view of the upper housing shown in FIG. 7;

fig. 9 is a schematic view illustrating an assembly of an upper housing and an elastic member according to an embodiment of the present application;

FIG. 10 is a cross-sectional view of an assembled structure of an upper housing and an unlocking member when assembled according to an embodiment of the present application;

FIG. 11 is a schematic view of an assembled structure of an upper housing and an unlocking component during assembly according to an embodiment of the present disclosure;

FIG. 12 is a cross-sectional view of the assembly shown in FIG. 11;

fig. 13 is an assembly structure of the upper housing and the unlocking member during unlocking according to the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Optical communication enables signals to be transmitted using two different carriers, electrical and optical. Optical signals carrying information are transmitted in the optical waveguide for optical fiber communication, and the information transmission with low cost and low loss can be realized by utilizing the passive transmission characteristic of light in the optical waveguide such as the optical fiber; the information processing devices such as computers use electrical signals, which requires the interconversion between electrical signals and optical signals in the optical fiber communication system.

Fig. 1 is a schematic diagram of connection relationship of an optical communication terminal. As shown in fig. 1, the connection of the optical communication terminal mainly includes an optical network unit 100, an optical module 200, an optical fiber 101, and a network cable 103;

one end of the optical fiber 101 is connected with a far-end server, one end of the network cable 103 is connected with local information processing equipment, and the connection between the local information processing equipment and the far-end server is completed by the connection between 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 network unit 100 having the optical module 200.

An optical port of the optical module 200 is connected with the optical fiber 101 and establishes bidirectional optical signal connection with the optical fiber;

the electrical port of the optical module 200 is accessed into the optical network unit 100, and establishes bidirectional electrical signal connection with the optical network unit;

the optical module realizes the mutual conversion of optical signals and electric signals, thereby realizing the connection between the optical fiber 101 and the optical network unit 100;

specifically, the optical signal from the optical fiber is converted into an electrical signal by the optical module and then input to the optical network unit 100, and the electrical signal from the optical network unit 100 is converted into an optical signal by the optical module and input to the optical fiber 101. The optical module 200 is a tool for realizing the mutual conversion of the photoelectric signals, and has no function of processing data, and in the photoelectric conversion process, the carrier of the information is converted between the light and the electricity, but the information itself is not changed.

The optical network unit 100 has an optical module interface 102, which is used for accessing the optical module 200 and establishing a bidirectional electrical signal connection with the optical module 200;

the optical network unit is provided with a network cable interface 104, which is used for accessing the network cable 103 and establishing bidirectional electric signal connection with the network cable 103;

the optical module 200 is connected with the network cable 103 through an optical network unit;

specifically, the optical network unit transmits a signal from the optical module to the network cable and transmits the signal from the network cable to the optical module, and the optical network unit serves as an upper computer of the optical module to monitor the operation of the optical module.

To this end, the remote server establishes a bidirectional signal transmission channel with the local information processing device sequentially through the optical fiber 101, the optical module 200, the optical network unit 100, and the network cable 103.

Common information processing apparatuses include routers, switches, electronic computers, and the like;

the optical network unit is an upper computer of the optical module, provides data signals for the optical module, and receives the data signals from the optical module, and the common upper computer of the optical module also comprises an Optical Line Terminal (OLT) and the like.

Fig. 2 is a schematic diagram of an optical network unit structure. As shown in fig. 2, the optical network unit 100 includes a circuit board 105, and a cage 106 is disposed on a surface of the circuit board 105; an electrical connector connected to the circuit board 105 is provided in the cage 106, and is used for connecting an electrical port of an optical module such as a gold finger; the cage 106 is provided with a heat sink 107, and the heat sink 107 has a convex structure such as a fin for increasing a heat radiation area.

The optical module 200 is inserted into the optical network unit 100, specifically, an electrical port of the optical module is inserted into an electrical connector in the cage 106, and an optical port of the optical module is connected to the optical fiber 101.

The cage 106 is located on the circuit board 105 of the optical network unit 100, and the electrical connectors on the circuit board 105 are wrapped in the cage; the optical module is inserted into the cage, the cage fixes the optical module, and heat generated by the optical module is conducted to the cage through the optical module housing and finally diffused through the heat sink 107 on the cage.

Fig. 3 is a schematic diagram of an optical module structure provided in the embodiment of the present application, and fig. 4 is an exploded schematic diagram of an optical module structure provided in the embodiment of the present application, as shown in fig. 3 and fig. 4, an optical module 200 provided in the embodiment of the present application includes an upper housing 201, a lower housing 202, an unlocking component 203, a circuit board 300, and an optical fiber array connector 400.

The upper shell 201 and the lower shell 202 form a cavity with two ports, specifically two ports (204, 205) in the same direction, or two ports in different directions; one of the ports is an electrical port 205, which is used for being inserted into an upper computer such as an optical network unit; the other port is an optical port 204 for connecting the external optical fiber 101; the circuit board 300, the light emitting sub-module, the light receiving sub-module and other photoelectric devices are positioned in the cavity formed by the upper shell and the lower shell.

The upper surface of the upper shell is provided with an elastic part sunken part which does not penetrate through the upper shell. The elastic recess is used for/partially placing the elastic element, the elastic recess can have different recess depths, and the elastic recess does not extend to the edge of the upper shell along the elastic extending direction of the elastic element, so that the elastic recess does not penetrate through the upper shell.

The upper shell 201 and the lower shell 202 are generally made of metal materials, which is beneficial to realizing electromagnetic shielding and heat dissipation; adopt the assembly methods that upper housing 201, lower casing combine, be convenient for install devices such as circuit board in the casing, generally can not make the casing of optical module structure as an organic whole, like this when devices such as assembly circuit board, locating part, heat dissipation and electromagnetic shield structure are not convenient for install, are unfavorable for production automation. The unlocking component 203 is positioned on the side wall of the cavity/upper shell 201, and the end of the unlocking component 203 can be pulled to enable the unlocking component 203 to relatively move on the surface of the side wall; when the optical module is inserted into the upper computer, the cage 106 is clamped by the unlocking component 203, so that the optical module is fixed in the upper computer; by pulling the unlocking member 203 to release the engagement between the optical module 200 and the cage 106, the optical module can be extracted from the host computer.

The circuit board 300 is located in the cavity formed by the upper and the shell, the circuit board 300 is electrically connected with the light emission sub-module and the light receiving sub-module respectively, and the circuit board is provided with chips, capacitors, resistors and other electric devices. Selecting corresponding chips according to the requirements of products, wherein common chips comprise a microprocessor MCU, a clock data recovery chip CDR, a laser driving chip, a transimpedance amplifier TIA chip, a limiting amplifier LA chip, a power management chip and the like;

the transimpedance amplifier is closely associated with the optical detection chip, and the transimpedance amplifier and the optical detection chip can be packaged together by a part of products, such as in the same TO (TO optical) tube shell or the same shell; the optical detection chip and the transimpedance amplifier can be separately packaged, and the transimpedance amplifier is arranged on the circuit board.

The chip on the circuit board 300 may be a multifunctional integrated chip, for example, a laser driver chip and an MCU chip are integrated into one chip, or a laser driver chip, a limiting amplifier chip and an MCU chip are integrated into one chip, and the chip is an integrated circuit, but the functions of the circuits do not disappear due to the integration, and only the circuit appears and changes, and the chip still has the circuit form. Therefore, when the circuit board is provided with three independent chips, namely, the MCU, the laser driver chip and the limiting amplifier chip, the scheme is equivalent to that when the circuit board 300 is provided with a single chip with three functions in one.

The surface of the end part of the circuit board 300 is provided with a golden finger, the golden finger consists of one pin which is mutually independent, the circuit board is inserted into an electric connector in the cage, and the golden finger is connected with the clamping bending conduction in the electric connector; the golden fingers can be arranged on the surface of one side of the circuit board, and the golden fingers are generally arranged on the upper surface and the lower surface of the circuit board in consideration of the large requirement on the number of pins; the golden finger is used for establishing electrical connection with the upper computer, and the specific electrical connection can be power supply, grounding, I2C signals, communication data signals and the like.

One port of the optical fiber array connector 400 can be inserted with an internal optical fiber, and the other port can be inserted with an external optical fiber (not shown in the figure) for realizing the butt joint of the internal optical fiber and the external optical fiber.

Fig. 5 is a structural view of an unlocking member 203 according to an embodiment of the present application, and fig. 6 is a front view of the unlocking member shown in fig. 5; as shown in fig. 5, an unlocking member 203 provided in the embodiment of the present application includes a handle 11, a cantilever 12, a cantilever beam 13, and a hook 14.

The handle 11 is used for driving the cantilever 12, the suspension beam 13 and the hook 14 to move along with the cantilever under the driving of external acting force. Any shape that can drive other components to move can be used as the shape of the handle 11. Generally, the handle 11 is manually pulled and moved by a user, and in order to facilitate the user to pull the handle 11, the handle 11 may be shaped into a "U" shape in a practical real time. The U-shaped handle 11 is convenient for a user to manually pull the handle 11, and on the other hand, the chamfer design adopted at the joint of the closed end of the U-shaped handle 11 can avoid cutting the user. The handle 11 may be made of plastic or wood. In a feasible embodiment, the handle 11 may be made of sheet metal parts for convenience of processing and forming; moreover, the outline of the handle 11 with accurate size can be obtained through the processing mode of punching the sheet metal, so that the use requirement of the handle 11 for convenient operation and control is met.

The cantilever 12, which in this application comprises two cantilevers 12, is respectively arranged at the open end of the handle 11. The cantilever 12 is movable by actuation of the handle 11. The cantilever 12 may be made of metal, preferably, a metal plate material convenient for machining and forming.

In a possible embodiment, the open end/tip of each cantilever 12 may be provided with a bending member 121. The bending part 121 is pressed on the side wall of the upper shell 201, and then provides lateral supporting force for the cantilever 12, so that the cantilever 12 can be tightly attached to the side wall of the upper shell 201 to move, the risk of falling in the moving process is reduced, and the working reliability of the product is improved. In addition, the bending part 121 can be clamped with the bending part recess 211 of the upper shell 201, so that the upper shell 201 and the locking component 203 can be accurately positioned. The material of the bending part 121 can be metal material, and preferably metal plate material convenient for processing and forming can be adopted.

In a feasible embodiment, an elastic sheet 122 may be disposed on the end/stop wall 121a of each bending member 121, the elastic sheet 122 is convex, and a height of a protrusion 122a of the elastic sheet is greater than a depth of the recess 211 of the bending member, so that the elastic sheet 122 can extrude a card clamped to the interactive machine at the recess 211 of the bending member during the moving unlocking process, thereby implementing the unlocking function. The elastic sheet 122 may be made of metal, preferably made of metal plate, which is convenient for forming.

The suspension beam 13 is bridged between the two cantilevers and used for connecting the two cantilevers 12, the suspension beam 13 at least partially covers the top end of the concave part of the elastic part, so that the elastic part 206 installed in the concave part of the elastic part is not easy to slide off, and meanwhile, the risk that the elastic part is popped up when being in a compressed state can be reduced. The material of the suspension beam 13 can be a metal material, and preferably a metal plate material which is convenient to machine and form can be adopted. In a feasible embodiment, the side wall of the suspension beam 13 may be provided with a hook relief portion 131, a depth of the hook relief portion 131 in the horizontal direction is greater than a thickness of the hook, and the hook 14 is disposed in the hook relief portion 131 to protect the hook 14 and prevent the hook 14 from being worn.

The hook 14 has a connecting end 141 disposed on the side wall of the suspension beam 13 and a free end 142 bent downward to allow the free end to extend into the elastic member recess. In one possible embodiment, the connecting end 141 of the hook is disposed on the sidewall of the hook relief portion 131. The material of the hook 14 can be a metal material, and preferably a metal plate material convenient for processing and forming.

Further, in order to ensure the assembling process to be performed smoothly, the length L2 (shown in the subsequent fig. 8) of the concave portion of the elastic member and the length L1 (shown in the subsequent fig. 8) of the elastic member satisfy the following relation:

t1< L2-L1, wherein the T1 is the width of the hook.

Specifically, in the assembling process, one end (fixed end) of the elastic element 206 is in limit contact with the inner wall of the elastic element recess 221, and the distance from the other end of the elastic element 206 to the first side wall of the elastic element recess 221 is greater than or equal to the width of the hook, so that the hook is prevented from being blocked by the elastic element 206 in the moving down process, and the assembling process is ensured to be smoothly carried out.

Particularly for the optical module, the hook 14 extends into the elastic member recess 221 of the upper housing, and then moves in the elastic member recess 221 under the driving of the handle 11/elastic member 206. In order to facilitate the hook 14 to move in the elastic member recess 221, the moving performance of the hook 14 in the elastic member recess 221 is improved. The length of the hook 14 inserted into the elastic member recess 221 in the vertical direction is smaller than the height of the elastic member recess 221 in the vertical direction, so that the hook 14 does not contact with the bottom surface of the elastic member recess 221 in the moving process, and the contact surface between the hook 14 and the elastic member recess 221 in the moving process is reduced. Alternatively, the bottom end of the hook 14 may be set to be a column structure with a large top and a small bottom, and the column structure with the large top and the small bottom may further reduce the contact surface between the hook 14 and the sidewall of the elastic member recess 221 during the moving process, so as to ensure that the hook 14 can move smoothly in the elastic member recess 221.

Fig. 7 is a schematic structural diagram of an upper housing 201 according to an embodiment of the present application; fig. 8 is a top view of the upper housing shown in fig. 7. It can be seen that the upper housing 201 includes: first casing 21, second casing 22 and spacing board 23.

The first housing 21 includes a cover plate and a sidewall, and the sidewall and the cover plate may form a receiving cavity for receiving the optoelectronic device. The material of the first housing 21 may be a metal material, and preferably, a metal plate material convenient for machining and forming may be used.

In a feasible embodiment, in order to reduce the assembly space of the optical module and enhance the miniaturization performance of the optical module product, a side wall of the upper housing 201 may be provided with a bending piece recess 211, and the bending piece recess 211 is used for accommodating the bending piece 121 pressed on the side wall, wherein the size and the shape of the bending piece recess 211 are adapted to the size and the shape of the bending piece 121, so that the bending piece 121 can be completely pressed in the bending piece recess 211, thereby reducing the space occupied by the optical module on the horizontal plane, preventing the bending piece 121 from protruding out of the surface of the optical module 200, and making the overall structure of the product compact. Further, when the optical module is in an unlocked state, the bent piece 121 and the bent piece recess 211 are in an engaged state to play a role in limiting on one hand, so that the unlocking component 203 can be accurately moved to a preset position, and on the other hand, the bent piece 121 and the bent piece recess 211 are in an engaged state to ensure that the assembled optical module is stable in structure.

With continued reference to fig. 8, in order to ensure that the elastic element can drive the bending element 121 of the unlocking member 203 to smoothly reach the bending element recess 211 of the upper housing 201, the unlocking member 203 and the upper housing 201 at least satisfy the following relationship in size:

the length L3 (corresponding to the label in fig. 6) between the first and second sidewalls and the length L4 between the third and fourth sidewalls satisfy the following relationship:

L2-L1< L3-L4+ T1, wherein the first sidewall is a stop wall 121a of the bending piece, the second sidewall is a sidewall of the hook 14 away from the elastic piece, the third sidewall is a sidewall of the elastic piece depression 221 adjacent to the hook, and the fourth sidewall is a stop wall 211a of the bending piece depression.

In a feasible embodiment, in order to reduce the assembly space of the optical module and enhance the miniaturization performance of the optical module product, two opposite side walls in the compression direction of the elastic member 206 of the upper housing 201 may be provided with elastic sheet recesses 212, and the elastic sheet recesses protrude toward the outer side of the housing relative to the bending member recesses to form a boss; the piece card of buckling is blocked by the casing, specifically blocks between shell fragment depressed part and the piece depressed part of buckling, blocks promptly on the boss. The elastic sheet recess 212 is used for accommodating the elastic sheet 122 pressed on the side wall, wherein the size and the shape of the elastic sheet recess 212 are adapted to the size and the shape of the elastic sheet 122, so that the elastic sheet 122 can be completely pressed in the elastic sheet recess 212, the occupied space of the optical module on the horizontal plane can be reduced, the elastic sheet 122 is prevented from being additionally exposed out of the surface of the optical module 200, and the overall structure of the product is compact. When the optical module is in the unlocking state, the elastic sheet 122 and the elastic sheet 122 are in the engagement state, the elastic sheet 122 and the elastic sheet recess 212 are in the engagement state, on one hand, a limiting effect is achieved, it is ensured that the unlocking component 203 can accurately move to a preset position, and on the other hand, the elastic sheet 122 and the elastic sheet 122 recess are in the engagement state, it is ensured that the assembled optical module is stable in structure.

The second housing 22 is disposed at one end of the first housing 21, and an upper surface of the second housing 22 is provided with an elastic member recess 221 for accommodating the elastic member 206. The elastic member recess 221 does not penetrate the second housing 22 in the horizontal direction; the material of the second housing 22 may be a metal material, and preferably, a metal plate material convenient for machining and forming may be used.

The direction in which the elastic member 206 is compressed during horizontal unlocking in the present application.

Further, in order to make the handle 11 and the upper housing 201 move relatively, a plurality of elastic member recesses 221 are provided on the upper surface of the second housing 22, and a plurality of hooks 14 are provided on the corresponding unlocking member, wherein the number of the hooks 14 is equal to the number of the elastic member recesses 221, which is equal to the number of the elastic members 204. In a possible embodiment, the number of the elastic member recesses 221 may be two, and two hooks 14 are disposed on the corresponding unlocking member.

Alternatively, since the optoelectronic device is not accommodated in the second casing 22, the length of the second casing 22 in the horizontal direction can be smaller than the length of the first casing 21 in the same direction, so that the overall structure of the product is compact, and the product with small volume and light weight can be prepared. In order to further reduce the product quality, the second housing 22 may be designed to have an open structure. With continued reference to fig. 7, in one possible implementation, a boss 222 may be provided at the bottom end of the second housing 22.

And a limiting plate 23, which is partially fixed at the top end of the first shell 21 and partially fixed at the top end of the second shell 22. When unlocking, the elastic member 206 converts the elastic potential energy into kinetic energy, thereby applying an acting force to the hook 14. The trip 14 drives the unlocking component 203 to move towards the direction that the elastic component 206 extends under the action of the force, and in the moving process, the limiting plate 23 and the suspension beam 13 of the unlocking component 203 are mutually extruded, so that the purpose of accurately controlling the moving displacement is achieved. The limiting plate can be made of metal, and the preferred metal plate material which is convenient to machine and form can be adopted.

The following will describe the assembling process of the optical module according to the embodiment of the present application in detail with reference to the accompanying drawings, and specifically, refer to fig. 9 to 11.

The method comprises the following steps: the upper housing 201 is placed obliquely, the height of the first housing 21 of the upper housing 201 in the vertical direction is higher than the height of the second housing 22 of the upper housing 201 in the vertical direction, and at this time, one end of the elastic member 206 is in limit contact with the inner wall of the elastic member recess 221. The upper shell is then laid flat. At this time, referring to fig. 9, an assembly formed by the upper housing 201 and the elastic element 206 can be seen, and fig. 9 is a schematic view of an assembly formed by the upper housing 201 and the elastic element 206 according to a possible embodiment.

Step two: the position of the unlocking member 203 is adjusted so that the hook 14 of the unlocking member 203 is located right above the elastic member recess 221 of the upper housing 201, as can be seen in fig. 10. Fig. 10 is a sectional view of an assembly structure formed by the upper housing 201 and the unlocking member 203 during assembly according to an embodiment of the present application. At this time, the second housing 22 of the upper housing 201 is located below the suspension beam 13 of the unlocking member 203, and the hook 14 of the unlocking member 203 is located directly above the elastic member recess 221 of the upper housing 201.

Step three: the unlocking member 203 is fastened to the upper housing 201 from top to bottom, at this time, the suspension beam 13 of the unlocking member 203 is located on the upper surface of the elastic member recess 221, and the hook 14 of the unlocking member 203 extends into the elastic member recess 221 of the upper housing 201. Fig. 11 is a schematic diagram of an assembly structure formed by the upper housing 201 and the unlocking member 203 during assembly according to an embodiment of the present application; fig. 12 is a cross-sectional view of the assembly shown in fig. 11. As can be seen from fig. 12, the fixed end of the elastic element 206 is in limited contact with the inner wall of the elastic element recess 221, and the movable end of the elastic element 206 is in contact with the hook 14.

The assembly is completed by this point.

The following describes a reset procedure of an optical module according to an embodiment of the present application in detail with reference to the accompanying drawings.

When the optical module is inserted into the switch, the card in the cage of the switch is positioned on the upper surface of the bending piece and is clamped with the stop wall 211a of the concave part 211 of the bending piece, so that the optical module is locked in the cage, and the optical module is in a locked state at the moment. When the optical module is disconnected after being pulled out of the cage of the switch, the handle 11 is pulled towards the compression direction of the elastic element, the handle 11 drives the cantilever 12, the bend 121 and the elastic sheet 122 to move towards the direction of compressing the elastic element, and the protruding part 122a of the elastic sheet 122 protrudes outwards, so that the protruding part 122a extrudes the card of the switch in the moving process, and the card of the switch is separated from the bent part concave part 211. At this time, the upper housing 201 and the unlocking member 203 form an assembled structure, as shown in fig. 13. The pulling force of the pulling handle 11 is released, the elastic piece 206 converts the elastic potential energy into the kinetic energy, so that an acting force is applied to the unlocking component, the unlocking component moves towards the direction in which the elastic piece 206 extends under the action of the acting force, so that the unlocking component 203 is reset, and at the moment, the upper shell 201 and the unlocking component 203 form an assembly structure, which can refer to fig. 11.

The optical module shown in the embodiment of the application comprises an upper shell and a lower shell. The cavity formed by the upper shell and the lower shell is internally provided with a circuit board used for bearing and connecting the photoelectric device. And an unlocking component used for locking the switch with each other is arranged on the side wall of the upper shell. The upper surface of the upper shell is provided with an elastic piece concave part. The elastic component is located in the elastic component depressed part, and its stiff end and the spacing contact of inner wall of elastic component depressed part, its removal end and unblock part contact to the elastic component convert elastic potential energy into kinetic energy when realizing the unblock, drive unblock part and reset. The unlocking component shown in the embodiment of the application comprises two cantilevers which are attached to the side wall of the upper shell respectively, so that the locking component is movably connected with the upper shell. The locking part further comprises a cantilever beam for connecting the two cantilever arms, the cantilever beam at least partially covering the elastic member. The locking part further comprises a clamping hook, the connecting end of the clamping hook is arranged on the side wall of the suspension beam, and the free end of the clamping hook bends downwards to achieve that the free end can extend into the concave part of the elastic part. It can be seen that the optical module that this application embodiment provided, because the length that the hanging beam covers the elastic component is fixed, the elastic component is compressed gradually when the trip drives the elastic component and removes, and the length of corresponding elastic component reduces gradually, and the uncovered length of elastic component shortens gradually, and then can reduce the risk that the elastic component compression in-process was popped out.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims (9)

1. A light module, comprising:

a circuit board;

the upper shell and the lower shell are combined to form a cavity for bearing the circuit board; an elastic piece sunken part is arranged on the upper surface of the upper shell, and the elastic piece sunken part does not penetrate through the upper shell;

an unlocking member provided on an outer wall of the upper case, including:

the two cantilevers are respectively attached to two side walls of the upper shell and can slide on the side walls of the upper shell;

a cantilever beam bridging between the two cantilevers to connect the two cantilevers;

the connecting end of the clamping hook is arranged on the side wall of the suspension beam, and the free end of the clamping hook is bent towards the surface direction of the upper shell so as to extend into the concave part of the elastic piece;

an elastic member located in the elastic member recess, covered by the suspension beam; one end of the elastic part can be limited by the inner wall of the concave part of the elastic part, and the other end of the elastic part can be extruded by the free end of the clamping hook.

2. The optical module of claim 1, further comprising:

the bending piece is arranged at the tail end of the cantilever;

the elastic sheet is arranged at the tail end of the bending piece and is in a convex shape;

the bent piece concave part is arranged on the side wall of the upper shell and used for accommodating the bent piece;

and the elastic sheet concave part is arranged in the side wall of the upper shell, is convex relative to the bending piece concave part and is used for accommodating the elastic sheet.

3. The light module of claim 2,

the tail end of the bending piece is bent towards the side wall of the upper shell;

the elastic sheet protrudes towards the direction far away from the side wall of the upper shell, and the protruding height of the elastic sheet is greater than the depth of the concave part of the bending piece.

4. The optical module as claimed in claim 1, wherein the length L2 of the elastic member recess and the length L1 of the elastic member satisfy the following relation:

t1< L2-L1, wherein the T1 is the width of the hook.

5. The light module of claim 2, further comprising:

the clamping hook yielding part is arranged in the side wall of the suspension beam, and the side wall of the clamping hook yielding part is connected with the connecting end of the clamping hook.

6. The optical module as claimed in claim 5, wherein the length L3 between the first and second sidewalls and the length L4 between the third and fourth sidewalls satisfy the following relationship:

L2-L1< L3-L4+ T1, wherein, the first lateral wall is the position wall that ends of buckling piece, the second lateral wall is the lateral wall that the trip was kept away from in the elastic component direction, the third lateral wall is the lateral wall that the elastic component depressed part was close to in the trip direction, the fourth lateral wall is the position wall that ends of buckling piece depressed part.

7. The optical module of claim 1, wherein the plurality of elastic member recesses are uniformly distributed on the upper surface of the upper housing.

8. The optical module of claim 1, wherein a length of the hook inserted into the elastic member recess in a vertical direction is smaller than a height of the elastic member recess in the vertical direction.

9. The optical module of claim 1, wherein the number of the elastic member recesses is two, and the number of the hooks is two.

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