A radiation-hardened structure for satellite chips

Abstract

This utility model discloses a radiation-hardened structure for satellite chips. First, a radiation-hardening shielding material plate is pushed into the mounting groove along the expansion platform until its edge aligns with the edge of the expansion platform. At this point, the concave portion and convex portion one of the radiation-hardening shielding material plate correspond. After applying adhesive to the bottom surface of the radiation-hardening shielding material plate, it is pushed to the left, causing the concave portion and convex portion two on the left side of the plate to fit together. Adhesive is then dotted at the connection between convex portion one and the concave portion, and adhesive is also filled between the expansion platform and the radiation-hardening shielding material plate. This utility model, through dimensional control of the components, ensures that the radiation-hardening shielding material plate can be well installed in the structural housing, held in place by convex portion one and convex portion two. The force at the insertion points is evenly distributed, reducing the body area of ​​the radiation-hardening shielding material plate by less than 1.7%. This provides sufficient fixation of the radiation-hardening shielding material plate with minimal impact on the irradiated body, thereby achieving better chip performance.

Description

Technical Field

[0001] This utility model relates to the field of satellite chip installation technology, specifically to a radiation-resistant reinforcement structure for satellite chips. Background Technology

[0002] Satellite products have a strong demand for radiation-resistant chips. When the orbital altitude is high, even higher radiation resistance is required, otherwise the chip will fail. When the chip itself is not strong enough, it is necessary to add external radiation-resistant materials to enhance the overall resistance.

[0003] Due to the weight and space constraints of satellite products, it is necessary to fix the radiation-shielding material plate with minimal weight and a small footprint. In the industry, radiation-shielding material plates protecting chips are typically fixed directly with adhesive, but the adhesive strength is unstable. Given the high launch costs and non-repairability of satellite products, direct adhesive bonding is unreliable.

[0004] Therefore, this utility model provides a radiation-resistant reinforcement structure for satellite chips. When the adhesive strength of the glue is weakened, the reinforcement structure can still fix the radiation-resistant material plate without increasing the volume and weight, preventing it from falling off and ensuring the high reliability of satellite products. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a radiation-resistant hardening structure for satellite chips, characterized in that: it includes a radiation-resistant shielding material plate, a mounting groove, and a structural shell. The mounting groove is integrally machined on the structural shell. An arc-shaped widening platform extends from one side of the mounting groove and is connected to it. A protrusion 1 is connected to both sides of the arc-shaped widening platform. At least one protrusion 2 is provided opposite the arc-shaped widening platform. The protrusion 1 and protrusion 2 have the same structure. The radiation-resistant shielding material plate is bonded to the space enclosed between the upper ends of the protrusion 1 and protrusion 2 and the arc-shaped widening platform.

[0006] Preferably, the radiation shielding material plate has at least three recesses, one of which is fitted into the other of the protrusions.

[0007] Preferably, the upper ends of the first protrusion and the second protrusion are provided with clearance positions, and the connection between the first protrusion and the concave part is filled with glue in a dot matrix.

[0008] Preferably, adhesive is used to fill the space between the extension platform and the radiation shielding material plate.

[0009] Preferably, the length and width of the radiation shielding material plate are both less than or equal to 30 mm; the length of the recess is greater than 1 mm and less than 1 / 5 of the length of the radiation shielding material plate; the width of the recess is greater than 1 mm and less than 1 / 5 of the width of the radiation shielding material plate.

[0010] Preferably, the length of the mounting groove is equal to the length of the radiation shielding material plate plus 0.1~0.2mm; the width of the mounting groove is equal to the width of the radiation shielding material plate plus 0.1~0.2mm.

[0011] Preferably, the length of the first convex part / second convex part is equal to the length of the concave part minus 0.1~0.15mm; the width of the first convex part / second convex part is equal to the width of the concave part. The inner width of the clearance position is the width of the first convex part / second convex part plus 0.1~0.2mm.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) In this invention, the anti-radiation shielding material plate is first pushed into the mounting groove along the arc-shaped widening platform until the edge of the anti-radiation shielding material plate is attached to the edge of the arc-shaped widening platform. At this time, the concave part of the anti-radiation shielding material plate corresponds to the convex part one. After applying glue to the bottom surface of the anti-radiation shielding material plate, it is pushed to the left so that the concave part on the left side of the anti-radiation shielding material plate is fitted with the convex part two. Glue is dot-filled at the connection between the convex part one and the concave part, and glue is filled between the expansion platform and the anti-radiation shielding material plate. By controlling the dimensions between the anti-radiation shielding material plate, the structural shell, the mounting groove, the arc-shaped widening platform, the convex part one, the convex part two, the concave part and the clearance position, this invention enables the anti-radiation shielding material plate to be well installed in the structural shell and held in place by the convex part one and the convex part two. The force at the insertion point is balanced, and the body area of ​​the anti-radiation shielding material plate is reduced to within 1.7%. This ensures that the anti-radiation shielding material plate is fully fixed and has almost no impact on the irradiated body, thereby achieving better performance of the chip. The reinforcement and installation method of the anti-radiation shielding material plate of this utility model can be used not only for satellite anti-radiation shielding material plates, but also for other situations where a certain flat plate material needs to be embedded in a local area and where space and mass constraints are high. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the shell of this utility model.

[0015] Figure 2 This is one of the schematic diagrams of the installation structure of this utility model.

[0016] Figure 3 This is the second schematic diagram of the installation structure of this utility model.

[0017] Figure 4 This is a cross-sectional view of the present invention.

[0018] Figure 5 This is one of the dimension markings for the structural shell of this utility model.

[0019] Figure 6 This is the second dimensioned diagram of the structural shell of this utility model.

[0020] Figure 7 This is a dimensional structural diagram of the radiation shielding material plate of this utility model. Detailed Implementation

[0021] like Figures 1 to 7 As shown, a radiation-resistant reinforcement structure for a satellite chip includes a radiation shielding material plate 1, a structural shell 2, a mounting groove 3, an arc-shaped widening platform 4, a first protrusion 5, a second protrusion 8, a recess 6, and a clearance position 7.

[0022] A: Length of radiation shielding material plate 1;

[0023] B: Width of radiation shielding material plate 1;

[0024] D: Length of the recessed portion (6);

[0025] E: width of recess 6;

[0026] F: Distance between the center of radiation shielding material plate 1 and the center of recess 6;

[0027] a: Length of mounting slot 3;

[0028] b: Width of mounting slot 3;

[0029] d: Length of convex part one 5 / convex part two 8;

[0030] e: width of convex part one 5 / convex part two 8;

[0031] f: Distance between the center of mounting groove 3 and the center of protrusion 5;

[0032] g: Width of the arc-shaped widening platform 4;

[0033] h: Width of the inner side of the clearance area 7.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0037] like Figures 1 to 7 As shown, an installation groove 3 is integrally machined on the structural shell 2. An arc-shaped widening platform 4 extends from one side of the installation groove 3. A protrusion 5 is connected to both sides of the arc-shaped widening platform 4. At least one protrusion 8 is provided opposite the arc-shaped widening platform 4. The protrusion 5 and the protrusion 8 have the same structure. A radiation shielding material plate 1 is bonded to the space enclosed between the upper ends of the protrusion 5 and the protrusion 8 and the arc-shaped widening platform 4.

[0038] The radiation shielding material plate 1 has at least three recesses 6, one of which is fitted into the second protrusion 8. The upper ends of the first protrusion 5 and the second protrusion 8 are provided with clearance positions 7, and the connection between the first protrusion 5 and the recess 6 is filled with adhesive. Adhesive is also used to fill the space between the extension platform and the radiation shielding material plate 1.

[0039] The length and width of the radiation shielding material plate 1 are both less than or equal to 30mm; the length of the recess 6 is greater than 1mm and less than 1 / 5 of the length of the radiation shielding material plate 1; the width of the recess 6 is greater than 1mm and less than 1 / 5 of the width of the radiation shielding material plate 1. Specifically, for the radiation shielding material plate 1, dimensions A and B are determined by the chip size and radiation resistance requirements, and are controlled within 30mm; dimension D is based on the external dimensions, generally satisfying 1≤D≤A*1 / 5, 0.4≤E≤B*1 / 12; dimension F is generally controlled within 0.4*A≤F≤0.6*A.

[0040] The length of the mounting groove 3 is equal to the length of the radiation shielding material plate 1 plus 0.1~0.2mm; the width of the mounting groove 3 is equal to the width of the radiation shielding material plate 1 plus 0.1~0.2mm.

[0041] The length of convex part 1 5 / convex part 2 8 is equal to the length of concave part 6 by 0.1~0.15mm; the width of convex part 1 5 / convex part 2 8 is equal to the width of concave part 6.

[0042] The inner width of the clearance 7 is the width of protrusion 5 / protrusion 8 + 0.1~0.2mm.

[0043] The installation method of the radiation-hardened structure for satellite chips includes the following steps:

[0044] S1. Push the anti-radiation shielding material plate 1 into the installation groove 3 along the arc-shaped widening platform 4 until the edge of the anti-radiation shielding material plate 1 is in contact with the edge of the arc-shaped widening platform 4. At this time, the concave part 6 of the anti-radiation shielding material plate 1 corresponds to the convex part 5.

[0045] S2. Based on S1, after applying glue to the bottom surface of the anti-radiation shielding material plate 1, push it to the left so that the concave part 6 on the left side of the anti-radiation shielding material plate 1 fits into the convex part 8.

[0046] S3. Based on S2, fill the connection between the protrusion 5 and the concave part 6 with glue in a dot matrix, and fill the space between the extension stage and the radiation shielding material plate 1 with glue.

[0047] The structural shell 2 is usually made of aluminum alloy, which is commonly used in satellite control and communication systems, such as telemetry and data transmission communication equipment, antenna control systems, and integrated electronics components.

[0048] After the structural housing 2 is bonded to the radiation shielding material plate 1, the PCB board is locked to the structural housing 2 around its perimeter, so that the chips mounted on the PCB board can be shielded by the radiation shielding material plate 1.

[0049] The inner width of the clearance 7 is h = e + 0.1~0.2mm, and H is generally designed to be 1.5~2mm, which satisfies the economy of tool processing and avoids the clearance 7 having an excessively large suspended area.

[0050] The length of mounting groove 3 is a = A + 0.1~0.2mm, and the width of mounting groove 3 is b = B + 0.1~0.2mm;

[0051] The length d of convex part 1 (5) / convex part 2 (8) is D - 0.1~0.15mm;

[0052] The distance between the center of mounting groove 3 and the center of protrusion 5 is f = F + g;

[0053] The width g of the arc-shaped widening platform 4 must satisfy the following requirement: A*0.6≤g≤A;

[0054] By controlling the dimensions of the radiation shielding material plate 1, the structural shell 2, the mounting groove 3, the arc-shaped widening platform 4, the first protrusion 5, the second protrusion 8, the recess 6, and the clearance position 7, the radiation shielding material plate 1 can be well installed in the structural shell 2 and held in place by the first protrusion 5 and the second protrusion 8. The force at the insertion point is balanced, and the reduction in the body area of ​​the radiation shielding material plate 1 is within 1.7%. This ensures that the radiation shielding material plate 1 is fully fixed and has almost no impact on the irradiated body, thereby achieving better performance.

[0055] The recessed portion 6 of the radiation shielding material plate 1 can be matched and embedded with the protrusion 5 / protrusion 8 of the structural shell 2. After embedding, the protrusion 5 / protrusion 8 and the recessed portion 6 can be misaligned by relative movement, thereby forming a snap-fit ​​feature.

[0056] The reinforcement and installation method of the anti-radiation shielding material plate of this utility model can be used not only for satellite anti-radiation shielding material plates, but also for other situations where a certain flat plate material needs to be embedded in a local area and where space and mass constraints are high.

[0057] When the radiation shielding material plate 1 is subjected to vibration, the vertical force is mainly borne by the interaction of the protrusion 5, the concave part 6, and the protrusion 8, with only a small amount borne by the adhesive, thus greatly reducing tensile stress and making adhesion failure less likely. Even if the adhesive strength is significantly weakened for some reason, the interaction of the protrusion 5, the concave part 6, and the protrusion 8 still fixes the radiation shielding material plate 1; the adhesive filling the gaps at the joints restricts the horizontal movement of the radiation shielding material plate 1, preventing it from moving horizontally. Figure 2 The location of the reinforcement structure and installation scheme of this invention provides excellent anti-detachment capability. This invention satisfies the requirement of highly reliable fixation of the radiation shielding material plate 1 to the structural shell 2 within a very small space, making it suitable for satellite applications.

[0058] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of this utility model. Therefore, any modifications, equivalent changes, or improvements made in accordance with the claims of this utility model shall still fall within the scope of this utility model.

Claims

1. A radiation-hardened structure for a satellite chip, characterized in that: The device includes a radiation shielding material plate (1), a mounting groove (3), and a structural shell (2). The structural shell (2) has an integrally machined mounting groove (3). One side of the mounting groove (3) is connected to an arc-shaped widening platform (4). The arc-shaped widening platform (4) has protrusions (5) on both sides. At least one protrusion (8) is provided opposite the arc-shaped widening platform (4). The protrusions (5) and (8) have the same structure. The radiation shielding material plate (1) is bonded to the space enclosed between the upper ends of the protrusions (5) and (8) and the arc-shaped widening platform (4).

2. The satellite chip radiation-hardened structure according to claim 1, characterized in that: The radiation shielding material plate (1) is provided with at least three recesses (6), one of which is fitted into the other of the protrusions (8).

3. The satellite chip radiation-hardened structure according to claim 2, characterized in that: The upper ends of the first protrusion (5) and the second protrusion (8) are provided with clearance positions (7), and the connection between the first protrusion (5) and the concave part (6) is filled with glue.

4. The satellite chip radiation-hardened structure according to claim 3, characterized in that: The expansion platform and the radiation shielding material plate (1) are filled with glue.

5. The satellite chip radiation-hardened structure according to claim 4, characterized in that: The length and width of the radiation shielding material plate (1) are both less than or equal to 30 mm; the length of the recess (6) is greater than 1 mm and less than 1 / 5 of the length of the radiation shielding material plate (1); the width of the recess (6) is greater than 1 mm and less than 1 / 5 of the width of the radiation shielding material plate (1).

6. The satellite chip radiation-hardened structure according to claim 1, characterized in that: The length of the mounting groove (3) is equal to the length of the anti-radiation shielding material plate (1) + 0.1~0.2mm; the width of the mounting groove (3) is equal to the width of the anti-radiation shielding material plate (1) + 0.1~0.2mm.

7. The satellite chip radiation-hardened structure according to claim 5, characterized in that: The length of the first protrusion (5) / second protrusion (8) is equal to the length of the concave part (6) by 0.1~0.15mm; the width of the first protrusion (5) / second protrusion (8) is equal to the width of the concave part (6).

8. The satellite chip radiation-hardened structure according to claim 7, characterized in that: The inner width of the clearance position (7) is the width of the first protrusion (5) / second protrusion (8) + 0.1~0.2mm.

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