Damping support structure between printed circuit boards of satellite-bone electronic equipment

Abstract

The invention discloses a damping support structure between printed circuit boards of satellite-bone electronic equipment. The damping support structure comprises a support rod (1), support bases (2) and support damping pieces (3), wherein the support rod (1) is of a cylindrical structure; the support bases (2) are sheathed on the support rods (1) to be used by pairing; and the support damping pieces (3) are embedded into the support bases (2). According to the damping support structure, the design of the matched use of the support rod, the support bases and the support damping pieces is adopted, and under the condition that the conventional processing process and the conventional operation processes cannot be affected, the processing and the mounting are easy, the operation is convenient, and the problem that components are damaged and destroyed caused by serious vibration response of the printed circuit can be solved. Meanwhile, the support restraining force between the boards is increased, and the whole rigidity of the printed circuit can be improved.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment processing, and in particular relates to a connection structure applied to internal printed circuit boards of electronic equipment with harsh mechanical environments. Background technique [0002] Electronic equipment mainly realizes various functions of the design through a number of internally distributed printed circuit boards and devices on them, based on certain rules and logical relationships; therefore, the reliability of the printed circuit board connection is directly related to the work of the devices on it. The reliability and even the performance and reliability of the product. Especially for space-borne electronic equipment, the working environment is extremely harsh, with alternating cold and heat, and severe vibration loads. It is necessary for the printed circuit board to have sufficient connection strength and rigidity, and to adapt to various working conditions as mu...

AI Technical Summary

Problems solved by technology

Both of the above two forms constrain the periphery of the printed circuit board, but the middle area of ​​the printed circuit board is either fixed on the metal frame by screws, or there is no fixing

[0004] Therefore, there are the following deficiencies in the prior art: 1. "hard link" can only improve the rigidity of the printed circuit board assembly, and reduce the mechanical response value of the printed circuit board to a certain extent, but the natural frequency of the assembly still cannot avoid broadband With excitation frequency range; 2. The more "hard links" points in the assembly process, due to processing tolerances and assembly tolerances, it is easier to generate internal stress in the process of processing, assembly and electrical installation, and there is no release path for this stress; 3. In vibration Stress will also be generated under the action of load and alternating thermal load. There is also no path to release the stress. The energy is greater than the bearing capacity of the printed circuit board or device, which will cause damage; 4. The deformation of the printed circuit board during vibration can cause pins and Stress in solder joints, microcracks in components, short circuits caused by collisions between adjacent circuit boards, cracks in electrical connector pins

"Hard link" cannot solve the problem of deformation suppression of printed circuit boards in a vibration environment; 5. The method of filling and sealing with silicone rubber cannot change the boundary conditions of printed circuit boards, and this method of damping and vibration reduction has limited effects

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