Anti-vibration and shock transformer

Abstract

The invention discloses an anti-vibration and shock transformer, comprising a shell, a silicon steel sheet group, a coil, a skeleton, a primary lead that is positioned on the upper skeleton and extends out of the shell upwardly, and a secondary lead that is positioned on the lower skeleton and extends out of the shell downwardly, wherein the secondary lead is used as a signal pin of the transformer to form an elastic needle, the effective length of the pin can be increased, and the rigidity of the pin can be reduced; and thus the transformer can be isolated from related signal pads on a PCB, and the phenomenon that the vibration and shock force of the transformer causes damage to the pads and related traces on the PCB can be prevented. In addition, flexible glue is injected in the transformer shell, and thus internal components of the transformer can be isolated from the shell, a fixed connection between the shell and the PCB is added, the vibration amplitude of the internal componentsof the transformer can be effectively reduced, and the damage to the transformer body caused by the vibration and shock force can be prevented.

Description

Technical field [0001] The invention belongs to the technical field of transformers, and relates to an anti-vibration and impact structure of a PCB board welding transformer. Background technique [0002] As components for measuring voltage and current, transformers are widely used in instrument measurement, equipment protection, automatic control and other fields. Some low-power transformers are often directly soldered on the PCB board. After soldering on the PCB board, the pins of the transformer and the PCB pad are connected as a whole by soldering; the transformer has a large mass and large inertia. When subjected to vibration and impact, the transformer pulls the PCB pad, causing displacement, and the displacement of the pad is easy The PCB trace is broken, causing damage to the circuit board. In addition, the gap between the plastic housing of the transformer and the internal components such as the skeleton, silicon steel sheet, coil, etc. is usually filled with epoxy res...

AI Technical Summary

Problems solved by technology

After welding on the PCB board, the pins of the transformer and the pads of the PCB board are connected as a whole through soldering; the transformer has a large mass and large inertia, and when it is subjected to vibration and impact, the transformer pulls the PCB pad to cause displacement, and the displacement of the pad is easy Pull off the PCB board trace, causing damage to the circuit board

In addition, the gap between the plastic shell of the transformer and the internal components such as the skeleton, silicon steel sheet, and coil is usually filled with epoxy resin to seal. Impact, easy to cause damage to the plastic shell and cracking of the colloid

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