Optical module packaging structure

Abstract

The invention provides an optical module packaging structure, and the structure comprises a pedestal, the internal space of which is used for fixing a PCBA; the shell is arranged on the base in a sleeving manner, so that the head part of the PCBA fixed on the base is packaged in the shell; and the shielding structure is fixed on the base, and elastic sheets are arranged on the periphery of the shielding structure. According to the technical scheme, the shell is arranged on the base in a sleeving mode, the inner space, used for fixing the PCBA, on the base is packaged in the shell, then packaging of the PCBA is achieved, multiple parts used for packaging the PCBA are integrated into two parts, use of shielding glue used for blocking is reduced, meanwhile, a shielding structure is arranged, and the shielding performance of the PCBA is improved. The periphery of the shielding structure is provided with the elastic sheets, thereby ensuring that the PCBA can be well grounded, and enabling the optical module packaging structure to have a good electromagnetic interference shielding characteristic.

Description

Technical Field

[0001] The present invention relates to the field of optoelectronic technology, and in particular to an optical module packaging structure. Background Art

[0002] Optical modules are an important part of modern communication networks. They are devices that can convert optical signals into electrical signals. Optical modules usually contain several optoelectronic devices, which are coupled to PCBA (printed circuit board) to form a photoelectric converter. The packaging structure of the optical module is used to package the PCBA.

[0003] The existing packaging structure is generally composed of a plurality of parts assembled and spliced ​​together. In order to improve the light shielding performance, the gaps between the parts need to be sealed with the help of shielding glue, which leads to high production costs and complicated installation process. Summary of the invention

[0004] In view of this, an object of an embodiment of the present application is to provide an optical module packaging structure that can improve the problems of high manufacturing cost and complex installation process.

[0005] In order to achieve the above technical objectives, the technical solutions adopted in this application are as follows: The present application provides an optical module packaging structure, including: The base, whose internal space is used to fix the PCBA; A shell, which is sleeved on the base so that the inner space of the base is enclosed in the shell; The shielding structure is fixed on the base, and spring sheets are arranged around the shielding structure.

[0006] According to the above technical means, the space inside the base is used to fix the PCBA, and the shell is mounted on the base, so that the space between the base and the shell is used to encapsulate the PCBA, and the multiple structures used for encapsulation in the prior art are simplified to two, thereby reducing the gap between the encapsulation structures, reducing the high manufacturing cost and installation process, and at the same time, the shielding structure is provided with springs on all sides to ensure that the PCBA can be grounded in any posture.

[0007] Furthermore, the shielding structure includes a first shielding sheet and a second shielding sheet, the first shielding sheet and the second shielding sheet form a closed shape, so that the head of the PCBA is located inside the closed shape, the PCBA is connected to the first shielding sheet, wherein a portion of the spring sheet is arranged on the first shielding sheet, and another portion of the spring sheet is arranged on the second shielding sheet.

[0008] According to the above technical means, the shielding structure is divided into a first shielding sheet and a second shielding sheet, and the PCBA is connected to the first shielding sheet, so that when assembling the shielding structure, the first shielding sheet can be connected to the PCBA first, and then the second shielding sheet can be fixed, which simplifies the steps of the installation process. At the same time, the PCBA is connected to the first shielding sheet, so that the spring sheet on the first shielding sheet can be located above the head of the PCBA, and the head of the PCBA is located in a closed shape, which can shield the leakage of electromagnetic waves from the direction of the head of the PCBA, further improving the characteristics of shielding electromagnetic interference.

[0009] Furthermore, the first shielding sheet is bent, the head of the PCBA is inserted into one side of the bend, and the other side of the bend is plugged into the base.

[0010] According to the above technical means, the first shielding sheet is bent to achieve connection between the first shielding sheet and the PCBA, and the spring sheet on the first shielding sheet can be arranged on at least one side of the base, which is beneficial to the installation of the first shielding sheet.

[0011] Furthermore, the second shielding sheet is constructed in a U shape, and a first hook and a second hook are provided at the end of the second shielding sheet, the first hook is hooked on the first surface of the base, the second hook is hooked on the second surface of the base, and the first surface is connected to the second surface.

[0012] According to the above technical means, the first hook and the second hook are respectively fixed to the first surface and the second surface perpendicular to the base, thereby improving the stability of the connection between the second shielding sheet and the base.

[0013] Furthermore, the shell is plugged into the base.

[0014] Furthermore, an inner side wall of the housing is provided with an elastic protrusion, and the elastic protrusion protrudes toward the inside of the housing so that the elastic protrusion can abut against the PCBA.

[0015] According to the above technical means, the stability of the connection between the PCBA and the housing is improved.

[0016] Furthermore, a first columnar member is provided on the base, one end of the first columnar member is connected to the side of the base, and the other end of the first columnar member abuts against the inner wall of the shell under the elastic force of the elastic protrusion.

[0017] According to the above technical means, since the first columnar member abuts against the inner wall of the shell, the gap between the shell and the base is reduced, and the light shielding performance of the optical module is improved.

[0018] Furthermore, an elongated piece is provided at the end of the shell, and the elongated piece is embedded in the notch of the shielding structure, and the elongated piece fits with the notch.

[0019] According to the above technical means, the elongated sheet is embedded in the notch of the shielding structure, and the elongated sheet fits with the notch, so that the gap between the shell and the first shielding sheet is reduced, thereby improving the light shielding performance of the optical module.

[0020] Furthermore, a second columnar member is provided on the base, and the second columnar member is located on the side of the base, so that the second columnar member is inserted into the U-shaped hole of the PCBA.

[0021] Furthermore, the tail of the PCBA extends out from the space enclosed by the housing and the base.

[0022] In the technical solution provided in the present application, by putting the outer shell on the base, the internal space on the base for fixing the PCBA is encapsulated inside the outer shell, thereby realizing the encapsulation of the PCBA, reducing the number of parts used to encapsulate the PCBA, reducing the use of shielding glue for sealing, reducing the production cost, simplifying the installation process, and providing a shielding structure. Shrapnel is provided around the shielding structure to ensure that the PCBA can be well grounded, thereby making the optical module packaging structure have good electromagnetic interference shielding characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present application may be further described by the non-limiting embodiments given in the accompanying drawings. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings may be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure provided for an embodiment of the present application.

[0025] Figure 2 Provided for the embodiments of this application Figure 1 Exploded diagram.

[0026] Figure 3 A schematic diagram of the housing structure provided in an embodiment of the present application.

[0027] Figure 4 A schematic diagram of the PCBA structure provided in an embodiment of the present application.

[0028] Figure 5 A schematic diagram of the first shielding sheet structure provided in an embodiment of the present application.

[0029] Figure 6 A schematic diagram of the structure of the second shielding sheet provided in an embodiment of the present application.

[0030] Figure 7 A schematic diagram of the base structure provided in an embodiment of the present application.

[0031] Figure 8 A schematic diagram of the connection method between the first shielding sheet and the PCBA provided in an embodiment of the present application.

[0032] Fig. 9 A schematic diagram of the cooperation method of the PCBA, base and shielding structure provided in an embodiment of the present application.

[0033] Fig.10 Schematic diagram of the base, housing, shielding structure and PCBA matching method provided in the embodiment of the present application.

[0034] Icons: 1-base; 101-triangular protrusion; 102-first surface; 103-second surface; 104-screw hole; 105-second columnar member; 106-first columnar member; 107-partition; 108-semicircular groove.

[0035] 2-housing; 201-elastic protrusion; 202-inner bottom surface; 203-screw hole; 204-third plug hole; 205-extension piece; 206-inner top surface; 207-inner side surface.

[0036] 3-shielding structure; 301-first shielding sheet; 302-second shielding sheet; 303-spring sheet; 3011-first plug hole; 3012-second plug hole; 3013-notch; 3014-outer plane; 3015-long groove.

[0037] 3021-first hook; 3022-second hook.

[0038] 4-PCBA; 401-arc surface; 402-head; 403-disc surface; 404-cylindrical groove; 405-screw hole; 406-U-shaped hole.

[0039] 5-Pan head screw; 6-Countersunk head screw. DETAILED DESCRIPTION

[0040] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] This embodiment proposes an optical module packaging structure, so that the PCBA 4 can be packaged inside the packaging structure. Figure 1 and Figure 2 As shown, the packaging structure includes a base 1 , a shell 2 and a shielding structure 3 .

[0042] The inner space of the base 1 is used to fix the PCBA 4. The housing 2 is sleeved on the base 1, so that the inner space of the base 1 is encapsulated in the housing 2, thereby realizing the encapsulation of the PCBA 4. The shielding structure 3 is fixed on the base 1, and springs are arranged around the shielding structure 3.

[0043] In this embodiment, by sleeve-mounting the housing 2 on the base 1, the internal space on the base 1 for fixing the PCBA 4 is encapsulated inside the housing 2, so that the head of the PCBA 4 is encapsulated inside the housing, and the encapsulation of the PCBA 4 is realized. Multiple parts for encapsulating the PCBA 4 are integrated into two (the structure of the base 1 and the housing 2), reducing the use of shielding glue for blocking. At the same time, a shielding structure 3 is provided, and springs 303 are provided around the shielding structure 3 to ensure that the PCBA 4 can be well grounded, thereby making the optical module packaging structure have good electromagnetic interference shielding characteristics. In this embodiment, the optical port direction of the PCBA 4 is sealed by the above structure, and the head of the PCBA 4 is the optical port.

[0044] like Figure 4 , Figure 7 as well as Fig. 9 As shown, the base 1 is provided with a triangular protrusion 101, a first surface 102, a second surface 103, a screw hole 104, a second columnar member 105, a first columnar member 106, a partition 107 and a semicircular groove 108. When the PCBA 4 is installed on the inner space of the base 1, the cylindrical groove 404 of the PCBA 4 cooperates with the semicircular groove 108 of the base 1, so that the arc surface of the PCBA 4 fits into the space inward of the cylindrical groove 404. The U-shaped hole 406 of the PCBA 4 cooperates with the second columnar member 105, so that the second columnar member 105 is inserted into the U-shaped hole 406, thereby ensuring the stability of the PCBA 4.

[0045] like Figure 5 and Figure 6 As shown, the shielding structure 3 includes a first shielding sheet 301 and a second shielding sheet 302 , which form a closed shape, wherein a portion of the elastic sheet 303 is located on the first shielding sheet 301 , and another portion of the elastic sheet is located on the second shielding sheet 302 .

[0046] The first shielding sheet 301 and the second shielding sheet 302 are enclosed in a closed shape, and both the first shielding sheet 301 and the second shielding sheet 302 are provided with springs, so that the base 1 can be grounded in all directions, further improving the light shielding performance of the optical module. At the same time, the head of the PCBA is arranged inside the closed shape to prevent electromagnetic waves from leaking from the optical port direction of the PCBA.

[0047] In this embodiment, Figure 5As shown, the first shielding sheet 301 is bent, and a first plug hole 3011 is provided on one side of the bent position, so that the head 402 of the PCBA can be inserted into the first plug hole 3011, and a second plug hole 3012 is provided on the other side of the bent position, and the second plug hole 3012 is plugged into the triangular protrusion 101 of the base 1. The stability of the first shielding sheet 301 installed on the base 1 is improved.

[0048] In this embodiment, Figure 4 , Figure 5 , Figure 8 and Fig. 9 As shown, the head 402 of PCBA 4 is inserted into the first plug hole 3011, so that the outer plane 3014 of the first shielding sheet 301 is in contact with the disc surface 403. Then, the assembled first shielding sheet 301 and PCBA 4 are assembled to the base 1, so that the partition 107 of the base 1 is inserted into the long groove 3015 of the first shielding sheet 301, and the second plug hole 3012 is matched with the triangular protrusion 101, so that the first shielding sheet 301 is plugged and fixed to the base 1. At the same time, the first shielding sheet 301 is provided with a notch 3013, and the shell 2 is provided with an extension sheet 205, and the extension sheet 205 is embedded in the notch 3013, so that the top surface of the first shielding sheet 301 and the shell 2 are on the same plane, and the setting of the extension sheet 205 and the notch 3013 also reduces the gap area between the first shielding sheet 301 and the shell 2, further improving the light shielding performance. The head of the PCBA in this embodiment is an optical port.

[0049] like Figure 6 , Fig. 9 and Fig.10 As shown, the second shielding plate 302 is constructed in a U shape, and the end of the second shielding plate 302 is provided with a first hook 3021 and a second hook 3022, the first hook 3021 is clamped on the first surface 102 of the base 1, and the second hook 3022 is clamped on the second surface 103 of the base 1, the first surface 102 is connected to the second surface 103, and the first surface 102 is perpendicular to the second surface 103.

[0050] In this embodiment, in order to improve the stability of the connection between the second shielding sheet 302 and the base 1 , a slot may be provided on the first surface 102 , so that the first hook 3021 is engaged in the slot, and the slot is adapted to the first hook 3021 .

[0051] In this embodiment, the second shielding sheet 302 is provided with a first hook 3021 and a second hook 3022 , and the two are respectively fixed on two perpendicular surfaces (the first surface and the second surface) of the base 1 , thereby improving the stability of the connection between the second shielding sheet 302 and the base 1 .

[0052] In this embodiment, the second shielding sheet 302 is constructed in a U-shape, so that spring pieces 303 are arranged on three sides of the base 1, and the spring pieces 303 corresponding to the first shielding sheet 301 are arranged on another side of the base 1, so that spring pieces 303 are arranged on all sides of the base 1, ensuring that when the optical module proposed in this embodiment is working, no matter what posture the base 1 is in, the PCBA 4 can be grounded through the spring pieces 303. In this embodiment, the head 402 of the PCBA 4 is arranged in a closed space surrounded by the first shielding sheet 301 and the second shielding sheet 302.

[0053] like Figure 3 , Fig. 9 as well as Fig.10 As shown, the housing 2 is sleeved on the base 1 and connected to the base 1 .

[0054] The outer shell 2 in this embodiment is a shell body which is closed on all sides and opened at both ends, and its inner wall surface includes an inner bottom surface 202 , an inner top surface 206 and an inner side surface 207 .

[0055] The inner bottom surface 202 is provided with an elastic protrusion 201, which protrudes toward the inside of the housing 2. The elastic protrusion 201 is elastic. When the housing 2 and the base 1 are assembled, the elastic protrusion 201 abuts against the base 1 under the action of elastic force, thereby improving the stability of the assembly of the housing 2 and the base 1. And under the elastic force of the elastic protrusion 201, after the housing 2 and the base 1 are assembled, the inner top surface 206 of the housing 2 and the plane of the base 1 relative to the inner top surface 206 are in contact with each other, thereby reducing the gap between the base 1 and the housing 2 and improving the electromagnetic interference shielding performance of the optical module.

[0056] The housing 2 is provided with a third plug hole 204, which is inserted into the triangular protrusion 101, and the third plug hole 204 and the second plug hole are arranged to overlap in the axis direction of the third plug hole 204 or the second plug hole, thereby further improving the connection stability between the housing 2 and the base 1.

[0057] In this embodiment, a first columnar member 106 is further provided on the side of the base 1. The space between the first columnar member 106 and the second columnar member 105 clamps part of the U-shaped hole 406. After the outer shell 2 and the base 1 are assembled, the cylindrical surface of the first columnar member 106 rests on the inner wall surface of the outer shell 2.

[0058] The process of assembling the optical module in this embodiment is as follows: Figure 4 , Figure 8 , Fig. 9 and Fig.10As shown, the head of PCBA 4 is inserted into the first jack 3011, and the outer plane 3014 of the first shielding sheet 301 is aligned with the disc surface 403, and then the second jack 3012 of the first shielding sheet 301 is inserted into the triangular protrusion 101, and the cylindrical groove 404 of PCBA 4 and the semicircular groove 108 of the base 1 are matched, so that the arc surface of PCBA 4 is aligned with the inner space of the cylindrical groove 404. Then the second shielding sheet 302 is assembled on the base 1, and the shell 2 is sleeved on the base 1, so that the third jack is inserted into the triangular protrusion 101, and the elastic protrusion 201 is against the outer wall surface of the base 1, and the second columnar member is against the inner wall surface of the shell 2. Finally, the base 1 and the shell 2 are fixed by the countersunk screw 6, and the PCBA 4, the base 1 and the shell 2 are fixed together by the pan head screw 5 passing through the screw hole 203, the screw hole 405 and the screw hole 104.

[0059] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An optical module packaging structure, characterized in that: include: The base, whose internal space is used to fix the PCBA; A shell is sleeved on the base so that the head of the PCBA fixed on the base is encapsulated in the shell; The shielding structure is fixed on the base, and spring sheets are arranged around the shielding structure.

2. The optical module packaging structure according to claim 1, characterized in that: The shielding structure includes a first shielding sheet and a second shielding sheet, wherein the first shielding sheet and the second shielding sheet form a closed shape so that the head of the PCBA is located inside the closed shape, the PCBA is connected to the first shielding sheet, wherein a portion of the spring sheet is arranged on the first shielding sheet, and another portion of the spring sheet is arranged on the second shielding sheet.

3. The optical module packaging structure according to claim 2, characterized in that: The first shielding sheet is bent, the head of the PCBA is inserted into one side of the bend, and the other side of the bend is plugged into the base.

4. The optical module packaging structure according to claim 2, characterized in that: The second shielding piece is constructed in a U shape, and a first hook and a second hook are provided at the end of the second shielding piece. The first hook is connected to the first surface of the base, and the second hook is connected to the second surface of the base. The first surface is connected to the second surface.

5. The optical module packaging structure according to claim 1, characterized in that: The shell is plugged into the base.

6. The optical module packaging structure according to claim 1, characterized in that: An elastic protrusion is provided on the inner side wall of the shell, and the elastic protrusion protrudes toward the inside of the shell, so that the elastic protrusion can abut against the PCBA.

7. The optical module packaging structure according to claim 6, characterized in that: A first columnar member is disposed on the base, one end of the first columnar member is connected to the side of the base, and the other end of the first columnar member abuts against the inner wall of the shell under the elastic force of the elastic protrusion.

8. The optical module packaging structure according to claim 1, characterized in that: An elongated piece is provided at the end of the shell, and the elongated piece is embedded in the notch of the shielding structure, and the elongated piece fits with the notch.

9. The optical module packaging structure according to claim 1, characterized in that: The base is provided with a second columnar member, and the second columnar member is located at the side of the base, so that the second columnar member is inserted into the U-shaped hole of the PCBA.

10. The optical module packaging structure according to claim 1, characterized in that: The tail of the PCBA protrudes relative to the space surrounded by the housing and the base.

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