Pre-pressing clamp used for installing circuit board assembly in inertial integrated navigation equipment

Abstract

The invention provides a pre-pressing clamp used for installing a circuit board assembly in inertial integrated navigation equipment. A support assembly and a bottom plate located on the support assembly are fixedly connected into a whole through screws, and a pressing assembly used for pressing and fixing a printed board placed on a positioning area is arranged on the left side of the upper end face of the bottom plate; a positioning assembly is installed on the right side of the upper end face of the bottom plate, the position of the positioning assembly corresponds to the installation position of an integrated circuit on the printed board and the position of a convex face on a heat dissipation plate, and the bottom plate and the positioning assembly are leveled through a balance plate assembly; and the positioning assembly is provided with a heat conduction rubber pad, is located at the right side of the printed board and is fixed on the convex face on the heat dissipation plate onthe positioning area to tightly press the heat conduction rubber pad, and after the heat conduction rubber pad is deformed and stabilized, the heat conduction rubber pad, the heat dissipation plate and the printed board are bonded and fixedly connected. The pre-pressing clamp solves the defects existing in manual installation, the assembly consistency and the one-time assembly qualification rate are improved, the assembly height of the heat conduction rubber pad is controllable, the reliability of the installed circuit board assembly is high, and the application value is high.

Description

technical field [0001] The invention belongs to the technical field of mechanical assembly fixtures, and in particular relates to a preloading fixture used for installing circuit board components in an inertial integrated navigation device. Background technique [0002] The inertial integrated navigation device is one of the important instruments on the aircraft, which is used to collect, calculate and display flight data such as the heading and attitude of the aircraft. The device is mainly composed of its component strapdown integrated navigation component for navigation calculation, and the compactness of the circuit board assembly in the strapdown combined navigation component determines the reliability of its work. Some circuit board components in the strapdown integrated navigation components need to be installed with heat sinks. In actual operation, manual installation is performed directly by hand. The defects of the manual installation method are: ①Manual installati...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a preloading fixture used for the installation of circuit board components in inertial integrated navigation equipment, which solves the defects of manual installation, improves the assembly consistency and the pass rate of one-time assembly, and the assembly of heat-conducting rubber pads Highly controllable, the installed circuit board components are highly reliable and have great application value

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