Optical communication package structure

Abstract

This invention provides an optical communication tube shell structure, including a base plate, a ceramic block, and a frame. The frame is formed by stamping a thin metal sheet. The thin metal sheet is cut to form insertion slots and stamped to form light windows. The thin metal sheet undergoes multiple sheet metal bending processes and the ends are welded to form an open-top and bottom frame. The insertion slots and light windows are located on opposite sides of the frame. The bottoms of both the frame and the ceramic block are fixedly connected to the base plate. One end of the ceramic block is inserted into the insertion slot of the frame and fixed to it. This optical communication tube shell structure uses sheet metal stamping and bending technology to integrally form the frame, eliminating the need for assembly and welding. This simplifies the production process, shortens the production cycle, reduces the risk of air leakage due to welding, and significantly reduces mold costs. It also offers good compatibility.

Description

Technical Field

[0001] This invention belongs to the field of optical communication equipment technology, and specifically relates to an optical communication tube shell structure. Background Technology

[0002] As electronic packaging technology gradually develops towards miniaturization, high density, multifunctionality, and high reliability, the requirements for the dimensional accuracy of component mating are also increasing. The frame in existing tube and shell structures is generally assembled or injection molded. Injection molding requires corresponding molds, resulting in high processing costs. At the same time, existing tube and shell structures suffer from difficulties in assembling small parts and long assembly time. Summary of the Invention

[0003] The purpose of this invention is to provide an optical communication tube shell structure that can at least solve some of the defects existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An optical communication tube shell structure includes a base plate, a ceramic block, and a frame. The frame is formed by stamping a thin metal sheet. The thin metal sheet is cut into sheet metal to form an insertion groove. The thin metal sheet is also stamped to form a light window. The thin metal sheet is bent multiple times and the ends of the thin metal sheet are welded to form an open frame. The insertion groove and the light window are located on two opposite sides of the frame. The bottom of the frame and the ceramic block are both fixedly connected to the base plate. One end of the ceramic block is inserted into the insertion groove of the frame and fixed to the frame.

[0006] Furthermore, the center of the metal sheet is stamped to form a light window, and the two ends of the metal sheet are symmetrically cut to form insertion slots. The metal sheet is symmetrically bent on both sides of the light window to form two opposing first bending segments. The ends of the two first bending segments away from the light window are symmetrically bent a second time at the insertion slots to form two second bending segments. The ends of the two second bending segments are welded together to form the frame.

[0007] Furthermore, the light window formed by stamping on the metal sheet has a protrusion extending outward and a recessed portion located on the inner surface of the metal sheet.

[0008] Furthermore, the protrusion is generally cylindrical, and its wall thickness is not less than the wall thickness of the frame. The protrusion is also provided with a flat portion, and the length of the protrusion extending outward is not less than its wall thickness.

[0009] Furthermore, the top of the ceramic block is provided with two opposing limiting blocks, and the insertion limit of the metal plate end welding point above the insertion groove is located between the two limiting blocks. The height of the limiting blocks is not greater than half the height of the metal plate end welding point.

[0010] Furthermore, the surface of the ceramic block that contacts the insertion slot is provided with a welding material layer, and the ceramic block is welded and fixed to the frame.

[0011] Furthermore, the bottom of the ceramic block has a U-shaped groove near the frame, the welding material layer extends into the U-shaped groove, and the bottom surface of the welding material layer in the U-shaped groove is flush with the bottom surface of the ceramic block.

[0012] Furthermore, the frame and the bottom of the ceramic block are fixed to the base plate by brazing.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] The optical communication tube shell structure provided by this invention uses sheet metal stamping and bending technology to form the frame in one piece, eliminating the need for assembly and welding. This simplifies the production process, shortens the production cycle, reduces the risk of air leakage caused by welding, and also greatly reduces mold costs. It also has good compatibility.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the optical communication tube shell structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the frame structure in the optical communication tube shell structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure in which the insertion groove is formed on the metal sheet in this invention;

[0019] Figure 4 This is a schematic diagram of the outer side of the metal sheet forming the light window in this invention;

[0020] Figure 5 This is a schematic diagram of the inner side of the metal sheet forming the light window in this invention;

[0021] Figure 6 This is a schematic diagram of the protrusion forming the light window on the metal sheet in this invention;

[0022] Figure 7 This is a side view of the ceramic block in the optical communication tube shell structure of the present invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Frame; 3. Ceramic block; 4. Limiting block; 5. Insertion slot; 6. Light window; 7. Recessed platform; 8. First bending section; 9. Second bending section; 10. Metal sheet; 11. Protrusion; 12. U-shaped groove; 13. Welding material layer. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an abutting connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] 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 one or more of that feature; in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] like Figures 1 to 6 As shown, this embodiment provides an optical communication tube shell structure, including a base plate 1, a frame 2, and a ceramic block 3. The ceramic block 3 is made of ceramic Al2O3, and the base plate 1 can be made of, but is not limited to, W. 80 Cu 20Preferably, nickel can be pre-plated on the surface of the base plate 1, and the nickel-plated surface has no appearance defects. Addressing the high cost of injection molding of existing tube shells, in this embodiment, the frame 2 of the optical communication tube shell structure is stamped from a thin metal sheet 10. The material of the thin metal sheet 10 can be, but is not limited to, Kovar alloy. The thin metal sheet 10 is cut into sheet metal to form insertion grooves 5, and stamped to form optical windows 6. The thin metal sheet 10 undergoes multiple sheet metal bending processes and the ends of the thin metal sheet 10 are welded to form an open-top and bottom frame 2. The insertion grooves 5 and optical windows 6 are located on two opposite sides of the frame 2. The bottoms of the frame 2 and the ceramic block 3 are both fixedly connected to the base plate 1. One end of the ceramic block 3 is inserted into the insertion groove 5 of the frame 2 and fixed to the frame 2. The optical communication tube shell structure provided in this embodiment uses sheet metal cutting, stamping and bending technology to form the frame in one piece, eliminating the need for assembly, reducing welding processes, simplifying the production process, shortening the production cycle, reducing the risk of air leakage caused by welding of parts, and also greatly reducing mold costs and having good compatibility.

[0029] like Figures 2 to 5 As shown, the metal sheet 10 is symmetrically cut at both ends to form insertion grooves 5, and a light window 6 is formed by stamping at the center of the metal sheet 10. Then, the metal sheet 10 is symmetrically bent on both sides of the light window 6 to form two opposing first bending segments 8. Then, the ends of the two first bending segments 8 away from the light window 6 are symmetrically bent at the insertion grooves 5 to form two second bending segments 9. The ends of the two second bending segments 9 are welded to each other to form the frame 2. At this time, the two insertion grooves 5 are merged together to form an integral slot, and the ceramic block 3 is inserted into the slot.

[0030] like Figure 5 and Figure 6As shown, the light window 6 formed by stamping on the metal sheet 10 has an outwardly extending protrusion 11. The protrusion 11 is generally cylindrical, and its wall thickness is not less than the wall thickness of the frame 2. The outward extension length of the protrusion 11 is not less than its wall thickness. The protrusion 11 also has a flat portion as a foolproof structural design to facilitate the installation with external components. At the same time, a recessed platform 7 is stamped on the inner surface of the metal sheet 10 at the light window 6 for mounting optical components such as lenses. In this embodiment, the light window 6 is integrally formed on the metal sheet 10 by stamping holes, avoiding the structure of welding the light window bracket to the frame in the prior art, thus improving production efficiency and ensuring product quality. Furthermore, since the protrusion 11 is integrally stretched, its wall thickness is consistent, ensuring the firmness of the protrusion 11 and the external component. The extension length of the protrusion 11 is not less than its wall thickness, ensuring the stability of the connection between the protrusion 11 and the external component. More importantly, in this embodiment, the frame 2 of the tube shell is formed by bending a sheet metal, and the internal composition of the material is evenly distributed, which is beneficial to the temperature control of the entire product and the evenness of heat dissipation.

[0031] like Figure 1 As shown, the top of the ceramic block 3 is provided with two opposing limiting blocks 4. When the frame 2 and the ceramic block 3 are assembled, the welding end of the metal plate 10 at the top of the insertion slot 5 is inserted and limited between the two limiting blocks 4, and the height of the limiting blocks 4 is not greater than half the height of the welding end of the metal plate 10. The structural design of the limiting blocks 4 not only ensures the connection accuracy between the frame 2 and the ceramic block 3, but also avoids the high heat during the welding of the ceramic block 3 and the metal plate 10 from affecting the welding end of the metal plate 10 and causing misalignment. At the same time, solder can be added between the two limiting blocks 4 to improve the welding strength of the welding end of the metal plate 10 and the welding strength between the ceramic block 3 and the metal plate 10.

[0032] like Figure 1 and Figure 7 As shown, a welding layer 13 can be provided on the surface of the ceramic block 3 that contacts the insertion groove 5, so that the ceramic block 3 and the frame 2 are welded and fixed, ensuring the stability and sealing of the connection between the ceramic block 3 and the frame 2.

[0033] For the connection between ceramic block 3 and base plate 1, a U-shaped groove 12 can be designed at the bottom of ceramic block 3 near the end of frame 2. The welding material layer 13 extends into the U-shaped groove 12. The welding and fixing between ceramic block 3 and base plate 1 is achieved through the welding material layer 13 at the bottom of ceramic block 3. At the same time, the bottom surface of welding material layer 13 in U-shaped groove 12 is flush with the bottom surface of ceramic block 3 to ensure the flatness of the connection between ceramic block 3 and base plate 1.

[0034] During manufacturing, firstly, according to the size requirements of the frame 2, select a metal sheet 10 of appropriate size. At both ends of the metal sheet 10, according to the design size requirements, and at the center of the metal sheet 10, use a stamping process to process the light window 6 of the designed size. Then, use sheet metal cutting to cut out the corresponding size insertion slot 5. Next, symmetrically bend the metal sheet 10 on both sides of the light window 6 using the first sheet metal bending process. Then, bend the metal sheet portion located at the insertion slot 5 using the second sheet metal bending process and weld it to form a frame structure with the insertion slot 5 and the light window 6. Then, insert the ceramic block 3 into the insertion slot 5 of the frame 2 and weld the ceramic block 3 to the frame 2 to ensure that the flatness of the bottom surface of the ceramic block 3 and the bottom surface of the frame 2 meets the requirements. Then, braze the welded ceramic block 3 and the frame 2 as a whole to the base plate 1. Finally, flatten the side of the frame 2 opposite to the base plate 1 and weld the top cover plate (not shown). Among them, sheet metal cutting, stamping and bending processes are existing technologies, and their specific process operations will not be described in detail here.

[0035] In summary, the frame of the optical communication tube shell structure provided by this invention is integrally formed using sheet metal stamping and bending technology, eliminating the need for assembly and welding. This simplifies the production process, shortens the production cycle, reduces the risk of air leakage caused by welding, and also significantly reduces mold costs, while offering good compatibility.

[0036] The above examples are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. An optical communication package structure comprising a base plate, a ceramic block and a frame, characterized in that: The frame is formed by stamping a thin metal sheet. The thin metal sheet is cut into insert grooves and stamped into light windows. The thin metal sheet undergoes multiple sheet metal bending processes and the ends are welded to form an open-top frame. The insert grooves and light windows are located on opposite sides of the frame. The frame and the bottom of the ceramic block are fixedly connected to a base plate. One end of the ceramic block is inserted into the insert groove of the frame and fixed to it. The light window formed by stamping on the thin metal sheet has an outwardly extending protrusion and a recessed portion on the inner surface of the thin metal sheet. The protrusion also has a flat portion. Two opposing limiting blocks are provided on the top of the ceramic block. The welded end of the thin metal sheet above the insert groove is positioned between the two limiting blocks, and the height of the limiting blocks is no greater than half the height of the welded end of the thin metal sheet.

2. The optical communication housing structure as described in claim 1, characterized in that: The center of the metal sheet is stamped to form a light window. The two ends of the metal sheet are symmetrically cut to form insertion slots. The metal sheet is symmetrically bent on both sides of the light window to form two opposing first bending segments. The ends of the two first bending segments away from the light window are symmetrically bent a second time at the insertion slots to form two second bending segments. The ends of the two second bending segments are welded together to form the frame.

3. The optical communication housing structure as described in claim 1, characterized in that: The protrusion is roughly cylindrical, and its wall thickness is not less than the wall thickness of the frame. The length of the protrusion extending outward is not less than its wall thickness.

4. The optical communication tube shell structure as described in claim 1, characterized in that: The ceramic block has a welding material layer on the surface that contacts the insertion slot, and the ceramic block is welded and fixed to the frame.

5. The optical communication tube shell structure as described in claim 4, characterized in that: The bottom of the ceramic block has a U-shaped groove near the frame, and the welding material layer extends into the U-shaped groove, with the bottom surface of the welding material layer in the U-shaped groove flush with the bottom surface of the ceramic block.

6. The optical communication tube shell structure as described in claim 1, characterized in that: The frame and the bottom of the ceramic block are fixed to the base plate by brazing.

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