An optical module housing, an adapter, and an optical module

Abstract

The application discloses an optical module shell, an adapter and an optical module, and belongs to the technical field of optical modules. The optical module shell comprises a first shell and a second shell, the first shell and the second shell are spliced to form a containing space, the first shell is provided with a first containing groove and a second containing groove side by side along a first direction, the first containing groove and the second containing groove are communicated along the first direction, the first containing groove comprises a first surface and a second surface, the first surface and the second surface are arranged in parallel, and the first surface and the second surface are spaced apart along a second direction. The optical module shell is characterized in that the first containing groove is arranged in the form of a through groove along the first direction, so that when the adapter is placed in the first containing groove, the adapter can be correspondingly adjusted along the first direction in the first containing groove, the distance between the adapter and a PCB board is adjustable, the manufacturing precision between the PCB board, the adapter and a ferrule is reduced, and the assembly precision between the PCB board, the adapter and the ferrule is improved.

Description

Technical Field

[0001] This invention belongs to the field of optical module technology, specifically relating to an optical module housing, an adapter, and an optical module. Background Technology

[0002] With the continuous and rapid development of my country's communications industry and the updating and upgrading of communication technologies, optical modules, as the foundation for building modern high-speed information networks, play an irreplaceable role in the optical communication industry. As optical module technology gradually develops, the transmission rate of optical modules is also constantly improving, evolving from 1.25G to 10G, 25G, 100G, and even 200G, 400G, and 800G.

[0003] Although the transmission rate of optical modules is increasing exponentially, the size of the optical modules themselves has not increased accordingly; in fact, there is a demand for miniaturization. With the size of the optical module remaining constant while the internal optical components are enlarging, the internal space of the optical module becomes even more confined, posing significant challenges to the design, fabrication of optical components, and assembly of the internal modules. Correspondingly, the limited internal space necessitates adjustments to the assembly precision of the optical module, leading to higher manufacturing precision requirements for each component and consequently higher manufacturing and assembly costs. Summary of the Invention

[0004] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides an optical module housing, an adapter and an optical module to solve the problems of high manufacturing precision requirements and high manufacturing costs of existing optical module components.

[0005] To achieve the above objectives, the present invention provides an optical module housing, comprising: A first housing and a second housing, wherein the first housing and the second housing are joined together to form an accommodating space; The first housing is provided with a first receiving groove and a second receiving groove arranged side by side along a first direction, and the first receiving groove and the second receiving groove are connected along the first direction; The first receiving groove includes a first surface and a second surface. The first surface and the second surface are arranged parallel to each other. The first surface and the second surface are parallel to a first direction and parallel to a third direction. The first surface and the second surface are spaced apart along a second direction, and the first surface and the second surface form the sidewall of the first receiving groove.

[0006] As a further improvement of the present invention, the length of the first receiving groove along the third direction is greater than the length of the second receiving groove along the third direction; The length of the first receiving groove along the second direction is less than the length of the second receiving groove along the second direction, and a third abutting surface extending along the second direction and the third direction is formed at the junction of the first receiving groove and the second receiving groove.

[0007] As a further improvement of the present invention, the first receiving groove includes a first receiving portion and a second receiving portion; the length of the first receiving portion along a third direction is greater than the length of the second receiving portion along a third direction, and a first abutting surface extending along a second direction and a third direction is formed at the junction of the first receiving portion and the second receiving portion.

[0008] As a further improvement of the present invention, the first receiving groove further includes a third receiving portion, the length of the third receiving portion along the third direction is less than the length of the second receiving portion along the third direction, and a second abutting surface extending along the second direction and the third receiving portion is formed at the junction of the second receiving portion and the third receiving portion.

[0009] As a further improvement of the present invention, the first receiving portion is provided with a receiving notch away from the first surface and the second surface along the second direction.

[0010] As a further improvement of the present invention, the length of the accommodating notch along the first direction is equal to the length of the accommodating notch accommodating object along the first direction plus the length of the cumulative tolerance.

[0011] As a further improvement of the present invention, the receiving notch of the first receiving portion along the second direction is provided with a sunken surface, the sunken surface is parallel to the first direction and the second direction, and the height of the sunken surface along the third direction is higher than that of the second receiving portion.

[0012] As a further improvement of the present invention, the second receiving portion is provided with a positioning hole extending in a third direction, and the second housing is provided with a positioning post that matches the positioning hole.

[0013] As a further improvement of the present invention, the third accommodating part has a card interface opposite to the first or second surface.

[0014] As a further improvement of the present invention, the card interface is provided with a through hole, and the second housing is provided with a positioning post that matches the through hole.

[0015] As a further improvement of the present invention, the second housing includes a third surface and a fourth surface disposed opposite to each other, wherein the third surface is provided with a third receiving groove, a positioning part and a fourth receiving groove arranged side by side along a first direction; A fourth abutting surface is formed at the junction of the third receiving groove and the fourth receiving groove, extending along the second direction and the third direction, and the fourth abutting surface matches the first abutting surface; The third receiving slot matches the first receiving part, and the fourth receiving slot matches the third receiving part and the second receiving slot; The positioning part matches the second receiving part.

[0016] As a further improvement of the present invention, the fourth surface and the area corresponding to the fourth receiving groove are provided with heat sinks.

[0017] This application also includes an adapter, which comprises: The main body has a through hole extending in a first direction, and the sidewalls of the main body, which are parallel to the first and third directions, extend in a second direction to form abutment protrusions. The main body includes a fifth surface and a sixth surface. The sixth surface is a plane. The fifth surface includes a first step surface and a second step surface, and the height of the second step surface along a third direction is less than that of the first step surface.

[0018] As a further improvement of the present invention, the adapter is an MT adapter or an LC adapter.

[0019] This application also includes an optical module, which includes the optical module housing, the adapter, and the PCB board; The adapter is embedded in the first receiving slot, the PCB board is embedded in the second receiving slot, and a core is connected between the adapter and the PCB board.

[0020] As a further improvement of the present invention, the adapter includes a body, on which a through-hole is formed along a first direction, and a sidewall of the body parallel to the first and third directions extends along a second direction to form an abutment protrusion; the abutment protrusion is located within a receiving notch of the first housing, and the adapter abuts against the third abutment surface of the first housing; the length of the abutment protrusion along the first direction is less than the length of the receiving notch along the first direction, and the gap between the abutment protrusion and the receiving notch is filled with a cured adhesive layer; The main body includes a fifth surface and a sixth surface, the sixth surface being a plane, and the fifth surface including a first stepped surface and a second stepped surface; the first stepped surface matches the first receiving portion, and the second stepped surface matches the second receiving portion.

[0021] As a further improvement of the present invention, the adapter includes an MT adapter and an LC adapter, wherein the MT adapter is snapped and fixed to the PCB, and the LC adapter is fixed to the PCB by an optical port clamping block.

[0022] This application also includes an optical module, which includes an optical module housing, the adapter, and a PCB board; The optical module housing includes a first receiving slot and a second receiving slot arranged along a first direction. The adapter is embedded in the first receiving slot, and the PCB board is embedded in the second receiving slot. A ferrule connects the adapter and the PCB board.

[0023] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0024] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include: (1) The optical module housing of the present invention comprises a first receiving groove and a second receiving groove respectively provided on the first housing for placing the adapter and the PCB board respectively. By setting the first receiving groove as a through groove along a first direction, the adapter can be adjusted accordingly along the first direction when placed in the first receiving groove, thereby achieving adjustable spacing between the adapter and the PCB board, thereby reducing the manufacturing precision between the PCB board, the adapter and the ferrule, and improving the assembly precision between the PCB board, the adapter and the ferrule. After the PCB board, the adapter and the ferrule are connected in place, the adapter is then fixed to the optical module housing to stabilize the overall assembly precision of the optical module.

[0025] (2) The optical module housing of the present invention forms a first abutting surface extending in a second direction and a third direction on a first receiving groove of a first housing, and a fourth abutting surface is provided on a corresponding second housing. The positioning of the first housing and the second housing is achieved by the corresponding abutting of the first abutting surface and the fourth abutting surface. The second abutting surface is provided on the first receiving groove for matching and fixing the adapter. The third abutting surface is provided on the end face where the first receiving groove and the second receiving groove meet. A step layer is formed at the bottom surface where the PCB board and the adapter are placed, so as to prevent the electromagnetic signal generated at the PCB board of the optical module from leaking directly from the bottom surface of the first housing, thus ensuring the stable operation of the optical module.

[0026] (3) The optical module housing of the present invention has an accommodating notch opened on the first accommodating part along the second direction away from the first and second surfaces. The accommodating notch is used in conjunction with the abutting protrusion of the adapter for limiting. By adjusting the position of the adapter, the precise connection between the adapter, the ferrule and the PCB is achieved. Finally, the abutting protrusion of the adapter is fixed in the accommodating notch by the curing adhesive layer, thereby achieving precise assembly between the adapter, the ferrule and the PCB. This improves the assembly precision between the components of the optical module without significantly increasing the manufacturing precision of each component in the optical module.

[0027] (4) The optical module housing of the present invention provides a recessed surface at the accommodating notch, and determines the amount of adhesive between the accommodating notch and the abutting protrusion of the adapter by the recessed surface. This ensures that the adapter is stably fixed to the first housing while preventing adhesive from adhering to the second housing, thereby achieving stable opening and closing of the first housing and the second housing. Attached Figure Description

[0028] Figure 1 This is an exploded view of one type of optical module in an embodiment of the present invention; Figure 2 This is an exploded view of another optical module in an embodiment of the present invention; Figure 3 This is a schematic diagram of the overall structure of the first housing in an embodiment of the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the overall structure of the second shell in an embodiment of the present invention; Figure 6 This is a schematic diagram of the rear structure of the second housing in an embodiment of the present invention; Figure 7 This is a schematic diagram of the overall structure of the adapter in an embodiment of the present invention.

[0029] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. First housing; 2. Second housing; 3. Main body; 4. PCB board; 5. Insert; 6. Optical port clamp; 7. Unlocking pull ring; 101. First receiving groove; 102. Second receiving groove; 103. First abutting surface; 104. Third abutting surface; 1011. First side; 1012. Second side; 1013. First receiving part; 1014. Second receiving part; 1015. Third receiving part; 1016. Receiving notch; 1017. Recessed surface; 1018. Positioning hole; 1019. Card interface; 201. First positioning post; 202. Second positioning post; 203. Third surface; 204. Fourth surface; 205. Heat sink; 2031, Third receiving groove; 2032, Positioning part; 2033, Fourth receiving groove; 2034, Fourth abutment surface; 301. Insertion through hole; 302. Abutment protrusion; 303. Fifth surface; 304. Sixth surface; 3031, First step surface; 3032, Second step surface. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] Example: Please see Figures 1-7 In a preferred embodiment of the present invention, the optical module housing includes a first housing 1 and a second housing 2, which are assembled to form an accommodating space for placing various components of the optical module. The first housing 1 is provided with a first accommodating groove 101 and a second accommodating groove 102 arranged side by side along a first direction, and the first accommodating groove 101 and the second accommodating groove 102 are connected along the first direction. The first accommodating groove 101 includes a first surface 1011 and a second surface 1012, which are arranged parallel to each other and are parallel to the first direction. The first surface 1011 and the second surface 1012 are parallel to a third direction and are spaced apart along a second direction. The first surface 1011 and the second surface 1012 form the sidewall of the first accommodating groove 101.

[0036] The optical module housing in this application has a first receiving slot 101 and a second receiving slot 102 respectively provided on the first housing 1 to hold the adapter and the PCB board 4. By setting the first receiving slot 101 as a through slot along a first direction, when the adapter is placed in the first receiving slot 101, the adapter can be adjusted accordingly along the first direction at the first receiving slot 101, so that the distance between the adapter and the PCB board 4 is adjustable, thereby adjusting the distance between the optical device fixed on the PCB board 4 and the adapter. Since the distance between the optical device and the adapter is adjustable, the size requirements in the manufacturing process of the optical device can be reduced while the assembly accuracy is improved. Taking an 800G optical module as an example, the volume of the optical device is twice that of a 400G optical module. With the corresponding installation area remaining unchanged, the accuracy of the optical device is higher. Since the distance between the optical device and the adapter is adjustable, the optical fiber connecting the optical device and the adapter can be naturally extended by adjusting the distance between the optical device and the adapter while ensuring that the manufacturing accuracy of the optical device remains unchanged.

[0037] Optionally, the first surface 1011 and the second surface 1012 in this application are both discontinuous surfaces, and a receiving notch 1016 may be correspondingly provided on the first surface 1011 and the second surface 1012 for positioning the adapter.

[0038] Preferably, the first direction in this application is the arrangement direction of the adapter, ferrule 5, and PCB board 4 in the optical module; the second direction is the width direction of the adapter and PCB board 4; and the third direction is the thickness direction of the PCB board 4. The first direction, the second direction, and the third direction are perpendicular to each other.

[0039] Furthermore, as a preferred embodiment of the present invention, the length of the first receiving groove 101 along the third direction is greater than the length of the second receiving groove 102 along the third direction; and the length of the first receiving groove 101 along the second direction is less than the length of the second receiving groove 102 along the second direction, and a third abutment surface 104 extending along the second direction and the third direction is formed at the junction of the first receiving groove 101 and the second receiving groove 102. The length difference between the first receiving groove 101 and the second receiving groove 102 along the third direction forms an abutment platform at their junction end face, which is used to fix the end face of the PCB board 4; the third abutment surface 104 is a stepped surface formed by the first receiving groove 101 and the second receiving groove 102 at the bottom surface, extending along the second direction and the third direction. When the adapter and the PCB board 4 are placed in the optical module housing, the electromagnetic signals emitted from the electronic components on the PCB board 4 will strike the wall surface of the adapter, avoiding the electromagnetic signals from leaking directly from the bottom surface of the first housing 1, and ensuring the stable operation of the optical module.

[0040] Further, as a preferred embodiment of the present invention, the first receiving groove 101 in this application includes a first receiving portion 1013 and a second receiving portion 1014 arranged sequentially along a first direction, wherein the length of the first receiving portion 1013 along a third direction is greater than the length of the second receiving portion 1014 along a third direction, and a first abutting surface 103 extending along the second direction and the third direction is formed at the junction of the first receiving portion 1013 and the second receiving portion 1014. When the first housing 1 and the second housing 2 are used to cooperate, this application forms a stepped platform at the first receiving portion 1013 and the second receiving portion 1014, and correspondingly sets the second housing 2 as a platform structure that cooperates with the first abutting surface 103 thereon, thereby realizing the relative positioning of the first housing 1 and the second housing 2. Accordingly, the heat dissipation area on the back of the second housing 2 extends to the first abutting surface 103, which can increase the heat dissipation area and improve the heat dissipation performance of the optical module.

[0041] Furthermore, as a preferred embodiment of the present invention, the first receiving groove 101 in this application further includes a third receiving portion 1015, which is disposed adjacent to the second receiving groove 102. The length of the third receiving portion 1015 along the third direction is less than the length of the second receiving portion 1014 along the third direction. A second abutment surface extending along the second direction and the third direction is formed at the junction of the second receiving portion 1014 and the third receiving portion 1015. The second abutment surface formed at the junction of the second receiving portion 1014 and the third receiving portion 1015 is mainly used to abut against the placement of the optical port pressure block 6, thereby achieving relative fixation between the adapter and the first housing 1.

[0042] More preferably, the first accommodating portion 1013 is provided with an accommodating notch 1016 along the second direction away from the first surface 1011 and the second surface 1012. As mentioned above, the arrangement of the first accommodating groove 101 in this application allows the position of the adapter within the first accommodating groove 101 to be adjusted accordingly. In order to achieve relative fixation between the adapter and the first housing 1, this application provides an accommodating notch 1016 on the first accommodating portion 1013 and provides a corresponding abutting protrusion 302 during adapter manufacturing to achieve relative positioning between the adapter and the first accommodating portion 1013. Finally, the abutting protrusion 302 is fixed in the accommodating notch 1016 to achieve relative fixation between the adapter and the first housing 1, ensuring stable use of the optical module.

[0043] Furthermore, the length of the accommodating notch 1016 along the first direction is equal to the sum of the length of the accommodating element at the accommodating notch 1016 along the first direction and the length of the cumulative tolerance. Due to the manufacturing and assembly precision requirements of the components within the optical module, this application sets the adapter and the first accommodating slot 101 in a relatively movable manner. After other components within the optical module are fixedly assembled on the PCB board 4, adjusting the distance between the adapter and the PCB board 4 allows the cumulative tolerance of each component to be accumulated at the accommodating notch 1016. This, combined with the adjustment of the length of the accommodating notch 1016 along the first direction using the accommodating element at the accommodating notch 1016, achieves stable assembly between the adapter and the first accommodating slot 101. Preferably, the accommodating element here mainly refers to the abutting protrusions 302 extending along the second direction on both sides of the adapter.

[0044] Furthermore, as a preferred embodiment of the present invention, a recessed surface 1017 is provided at the receiving notch 1016 opened along the second direction in the first receiving portion 1013. The recessed surface 1017 is parallel to the first and second directions, and the height of the recessed surface 1017 along the third direction is higher than that of the second receiving portion 1014. When the adapter and the first housing 1 are fixed relative to each other using the receiving notch 1016, adhesive needs to be applied at the receiving notch 1016 to fix the two together. In order to make the amount of adhesive controllable in the gap between the receiving notch 1016 and the abutment protrusion 302 on the adapter, and to avoid adhesive overflow and adhesion to the second housing 2, a recessed surface 1017 is opened at the top surface of the receiving notch 1016 to facilitate adhesive application and to observe the amount of adhesive applied.

[0045] Furthermore, as a preferred embodiment of the present invention, the second receiving portion 1014 in this application is provided with a positioning hole 1018 extending in a third direction, and the second housing 2 is provided with a first positioning post 201 that matches the positioning hole 1018. The matching of the positioning hole 1018 and the second positioning post 202 is used to realize the alignment or positioning of the first housing 1 and the second housing 2.

[0046] Furthermore, the third accommodating part 1015 has a card interface 1019 opposite to the first surface 1011 or the second surface 1012. The card interface 1019 is used to accommodate the positioning post of the second housing 2. When the adapter is an LC adapter, the card interface 1019 can also be used to set the optical port pressure block 6 to achieve relative fixation between the adapter and the first housing 1.

[0047] Furthermore, a through hole is provided at the card interface 1019, and a second positioning post 202 matching the through hole is correspondingly provided on the second housing 2. When fixing the first housing 1 and the second housing 2, the second positioning post 202 passes through the through hole, and a screw is provided on the back of the first housing 1. The second positioning post 202 is fixed to the first housing 1 by the screw, thereby fixing the two housings.

[0048] Furthermore, the second housing 2 includes a third surface 203 and a fourth surface 204 disposed opposite to each other; the third surface 203 is provided with a third receiving groove 2031, a positioning part 2032 and a fourth receiving groove 2033 arranged side by side along a first direction; wherein a fourth abutting surface 2034 extending along a second direction and a third direction is formed at the junction of the third receiving groove 2031 and the positioning part 2032, and the fourth abutting surface 2034 matches the first abutting surface 103; the third receiving groove 2031 matches the first receiving part 1013, the fourth receiving groove 2033 matches the third receiving part 1015 and the second receiving groove 102, and the positioning part 2032 matches the second receiving part 1014.

[0049] More preferably, the second housing 2 of this application has a heat sink 205 corresponding to the area on the side opposite to the fourth surface 204 and the fourth receiving groove 2033. A conventional second housing 2 for an optical module includes a third receiving groove 2031 and a fourth receiving groove 2033, used to respectively match the adapter and the PCB board 4 for positioning. Since the housing at the adapter location is relatively thin, to ensure the overall strength of the optical module, the heat sink 205 often only covers the area where the PCB board 4 is located. This application provides a corresponding positioning part 2032, which matches and fixes the fourth abutment surface 2034 at the third receiving groove 2031 to the first abutment surface 103, so that the heat dissipation area on the back of the second housing 2 covers the area where the positioning part 2032 is located, thereby increasing the heat dissipation area on the second housing 2 and improving the heat dissipation capacity of the optical module.

[0050] Based on the aforementioned optical module housing, this application includes an adapter comprising a main body 3, on which a through-hole 301 extending in a first direction is provided, and on the sidewall of the main body 3 parallel to the first and third directions, an abutment protrusion 302 extends in a second direction to form an abutment protrusion 302. The abutment protrusion 302 is used to match the receiving notch 1016 on the optical module housing, so that the adapter and the optical module housing are initially positioned, and finally the abutment protrusion 302 is fixed in the receiving notch 1016 to achieve the fixation of the optical module housing and the adapter. Furthermore, the aforementioned main body 3 also includes a fifth surface 303 and a sixth surface 304, which are the two surfaces of the main body 3 attached to the first housing 1 and the second housing 2; wherein the sixth surface 304 is a plane and is used to contact the bottom surface of the first housing 1; the fifth surface 303 is used to contact the inner wall surface of the second housing 2, and the fifth surface 303 includes a first step surface 3031 and a second step surface 3032, and the height of the second step surface 3032 along the third direction is less than that of the first step surface 3031.

[0051] Optionally, a guide groove extending in the first direction is provided on the sixth surface 304, and a guide protrusion extending in the first direction is correspondingly provided on the bottom surface of the first housing 1 to realize the assembly of the adapter and the first housing 1.

[0052] Furthermore, the adapter in this application is either an MT adapter or an LC adapter. Different types of adapters can be matched with the aforementioned optical module housing to assemble MPO optical port modules and LC optical port modules. For example... Figure 2 As shown, main body 3 is the main body of the MT adapter; as Figure 1 As shown, main body 3 is the LC adapter main body.

[0053] Furthermore, based on the aforementioned optical module housing and adapter, this application also includes an optical module, which includes the aforementioned optical module housing, adapter, and PCB board 4; wherein the optical module housing is embedded in the first receiving slot 101, the PCB board 4 is embedded in the second receiving slot 102, and a ferrule 5 is connected between the adapter and the PCB board 4.

[0054] As an optional embodiment of the present invention, the optical module in this application may separately include the above-mentioned optical module housing, conventional adapter, and PCB board 4; here, conventional adapter refers to an adapter structure without abutment protrusion 302. The adapter can be slidably disposed in the first receiving groove 101. After the adapter, PCB board 4, ferrule 5 and optical module housing are adjusted to the set position, the components are fixed by glue or other fixed connection methods to complete the overall assembly of the optical module.

[0055] As an optional embodiment of the present invention, the optical module in this application may separately include the above-mentioned adapter, conventional optical module housing and PCB board 4; here, conventional optical module housing refers to a housing with an overall through-slot structure, and the adapter can slide in the through-slot. After the adapter, PCB board 4, ferrule 5 and optical module housing are adjusted to the set position, the adapter is fixed to the side wall of the optical module housing by glue or other fixing methods, and then other components are fixed to complete the overall assembly of the optical module.

[0056] More preferably, the abutment protrusion 302 of the adapter in this application is located within the receiving notch 1016 of the first housing 1, and the adapter abuts against the third abutment surface 104 of the first housing 1. It is worth noting that when the abutment protrusion 302 is located within the receiving notch 1016, the abutment protrusion 302 can move along the first direction, so that the position of the adapter is correspondingly adjustable. That is, the adapter abutting against the third abutment surface 104 is the limit matching position between the adapter and the optical module housing. Depending on the actual assembly error of the optical module, the end face of the adapter may not abut against the third abutment surface 104.

[0057] Furthermore, the first stepped surface 3031 of the adapter is at the same height as the first accommodating portion 1013 along a third direction, and the second stepped surface 3032 of the adapter is at the same height as the second accommodating portion 1014 along a third direction. When the adapter is assembled into the first housing 1, the end face of the adapter facing the second housing 2 corresponds to and matches the first accommodating portion 1013 and the second accommodating portion 1014 on the first housing 1, so that when the second housing 2 matches the first housing 1, the adapter is correspondingly pressed and fixed inside the optical module.

[0058] More preferably, in this application, the length of the abutment protrusion 302 along the first direction is less than the length of the receiving notch 1016 along the first direction, and a cured adhesive layer is filled in the gap between the abutment protrusion 302 and the receiving notch 1016. To make the positions of the adapter and the optical module housing adjustable, when the abutment protrusion 302 corresponds to the receiving notch 1016, the abutment protrusion 302 can be moved accordingly along the first direction to adjust the position of the adapter. After the adapter is in place, to ensure the stability of the optical module during use, a cured adhesive layer is formed at the gap between the abutment protrusion 302 and the receiving notch 1016 by dispensing adhesive to fix the adapter to the optical module housing.

[0059] Optionally, when the adapter in this application is an MT adapter, the PCB board 4 is correspondingly snapped into the MT adapter. The PCB board 4 is connected to the MT connector, and the MT adapter is provided with a corresponding snap-fit ​​on the MT connector protrusion, thereby achieving a fixed connection between the MT connector and the MT adapter through the snap-fit ​​method.

[0060] As another optional embodiment, when the adapter in this application is an LC adapter, the LC adapter is provided with a corresponding groove, which corresponds to the card interface 1019 at the third receiving part 1015. By matching the optical port pressure block 6 at the card interface 1019, the LC adapter is pressed onto the first housing 1.

[0061] Correspondingly, when using different types of adapters, the corresponding ferrule structure also needs to be replaced accordingly, such as... Figure 2 As shown, when using an MT adapter, ferrule 5 should be selected; as... Figure 1 As shown, when the LC adapter is selected, the ferrule 5 is the LC ferrule 5.

[0062] More preferably, the optical module in this application also includes an unlocking pull ring 7, which is disposed on the first housing 1 and is used to lock and open the first housing 1 and the second housing 2.

[0063] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical module, characterized in that, include: Optical module housing, adapter, and PCB board; The optical module housing includes a first housing and a second housing, wherein the first housing and the second housing are assembled to form an accommodating space; The first housing is provided with a first receiving groove and a second receiving groove arranged side by side along a first direction, and the first receiving groove and the second receiving groove are connected along the first direction; The first receiving groove includes a first surface and a second surface. The first surface and the second surface are arranged parallel to each other. The first surface and the second surface are parallel to a first direction. The first surface and the second surface are parallel to a third direction. The first surface and the second surface are spaced apart along a second direction. The first surface and the second surface form the sidewall of the first receiving groove. The first receiving slot and the second receiving slot are used to place the adapter and the PCB board respectively. By setting the first receiving slot to a through slot along the first direction, when the adapter is placed in the first receiving slot, the adapter can be adjusted accordingly along the first direction at the first receiving slot, so as to realize the adjustable spacing between the adapter and the PCB board. The first receiving groove includes a first receiving portion and a second receiving portion. The length of the first receiving portion along a third direction is greater than the length of the second receiving portion along a third direction. The first receiving portion is provided with a receiving notch along a second direction away from the first surface and the second surface. The receiving notch is used for the relative positioning of the abutment protrusion of the adapter and the first receiving portion. The length of the receiving notch along a first direction is equal to the sum of the length of the abutment protrusion along the first direction and the cumulative tolerance length of each component. After the adapter position is adjusted to the correct position, the adapter is fixed to the first housing by applying adhesive into the receiving notch. The first receiving groove also includes a third receiving part, the third receiving part having a card interface opposite to the first surface or the second surface, the card interface being used to receive the positioning post of the second housing; The adapter is embedded in the first receiving slot, the PCB board is embedded in the second receiving slot, and a core is connected between the adapter and the PCB board; The adapter includes a body with a through hole extending in a first direction, and a sidewall of the body parallel to the first and third directions extending in a second direction to form an abutment protrusion; the abutment protrusion is located within a receiving notch in the first housing, and the adapter abuts against a third abutment surface of the first housing; the length of the abutment protrusion in the first direction is less than the length of the receiving notch in the first direction, and the gap between the abutment protrusion and the receiving notch is filled with a cured adhesive layer; The main body includes a fifth surface and a sixth surface. The sixth surface is a plane. The fifth surface includes a first step surface and a second step surface, and the height of the second step surface along a third direction is less than that of the first step surface. The adapter is an MT adapter or an LC adapter; When the adapter is an MT adapter, the PCB board is snapped into and matched with the MT adapter; The PCB board is connected to the MT connector; The MT adapter is provided with a corresponding buckle on the MT connector protrusion, which realizes the fixed connection between the MT connector and the MT adapter by snap-fit. When the adapter is an LC adapter, the LC adapter has a corresponding groove that corresponds to the card interface of the third accommodating part. By matching the optical port pressure block at the card interface, the LC adapter is pressed onto the first housing.

2. The optical module according to claim 1, characterized in that, The length of the first receiving groove along the third direction is greater than the length of the second receiving groove along the third direction; The length of the first receiving groove along the second direction is less than the length of the second receiving groove along the second direction, and a third abutting surface extending along the second direction and the third direction is formed at the junction of the first receiving groove and the second receiving groove.

3. The optical module according to claim 1 or 2, characterized in that, A first contact surface extending in a second direction and a third direction is formed at the junction of the first receiving portion and the second receiving portion.

4. The optical module according to claim 3, characterized in that, The length of the third accommodating portion along the third direction is less than the length of the second accommodating portion along the third direction, and a second abutting surface extending along the second direction and the third direction is formed at the junction of the second accommodating portion and the third accommodating portion.

5. The optical module according to claim 1, characterized in that, The first accommodating part has a recessed surface in the accommodating notch along the second direction. The recessed surface is parallel to the first and second directions, and the height of the recessed surface along the third direction is higher than that of the second accommodating part.

6. The optical module according to claim 4 or 5, characterized in that, The second receiving portion has a positioning hole extending in a third direction, and the second housing has a corresponding first positioning post that matches the positioning hole.

7. The optical module according to claim 1, characterized in that, The card interface is provided with a through hole, and the second housing is provided with a second positioning post that matches the through hole.

8. The optical module according to any one of claims 1 to 7, characterized in that, The second housing includes a third surface and a fourth surface disposed opposite to each other, wherein the third surface is provided with a third receiving groove, a positioning part and a fourth receiving groove arranged side by side along a first direction; A fourth abutting surface is formed at the junction of the third receiving groove and the positioning part, extending along the second direction and the third direction, and the fourth abutting surface matches the first abutting surface; The third receiving slot matches the first receiving part, and the fourth receiving slot matches the third receiving part and the second receiving slot; The positioning part matches the second receiving part.

9. The optical module according to claim 8, characterized in that, The fourth surface and the area corresponding to the fourth receiving slot are provided with heat sinks.

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