Mechanical vibration damping and reinforcing device for large-size device

By designing a vibration-absorbing and reinforcement device with an H-shaped frame structure and an L-shaped fixed structure, the problem of cracks and seal failures occurring after vibration of the large-size hybrid integrated circuit parallel seam welding cover plate is solved, and the effect of improving the cover plate's vibration stress resistance and avoiding crack failures is achieved.

CN119730024APending Publication Date: 2025-03-28CHINA ACADEMY OF SPACE TECHNOLOGY
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Patent Information

Application Number
CN202411772666.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-04
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

Large-size hybrid integrated circuit parallel seam welded cover plates are prone to cracks and seal failure after random vibration tests, resulting in air leakage in the shell or direct tearing of the cover plate.

Method used

A large-size device mechanical vibration reduction and reinforcement device is designed, using an H-shaped frame structure and an L-shaped fixing structure. The reinforcement and fixing structure are closely connected to the device to be reinforced and the PCB board through fastening screws to ensure that the device does not have cracks in a vibrating environment.

Benefits of technology

It effectively suppresses the large deformation of the cover plate during vibration, improves the vibration stress resistance of the cover plate, avoids cracking and failure at the weld, and ensures the reliability and service life of the device.

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Abstract

The invention relates to a mechanical vibration reduction reinforcing device for a large-size device, and belongs to the field of vibration reduction design. Comprising a reinforcing structure, four fixing structures, a PCB and a to-be-reinforced device, wherein the PCB is of a horizontally placed plate-shaped structure; a to-be-reinforced device is placed on the upper surface of the PCB; the reinforcing structure is placed on the upper surface of the to-be-reinforced device; the four fixing structures are installed at the four corners of the reinforcing structure correspondingly. The bottom ends of the four fixing structures are mounted on the upper surface of the PCB, so that a device to be reinforced is fixed; after the to-be-reinforced device is pressed and installed on the PCB through the reinforcing structure and the four fixing structures, the to-be-reinforced device does not crack in the state that the vibration magnitude is 23 g and the vibration duration is 3 hours; the device is used for reinforcing installation of 64mm * 38mm devices, so that the devices can be fixed and sealed, and vibration reduction is achieved in a subsequent mechanical environment. The problem that the cover plate of the device cracks under vibration is solved.
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