Efficient dustproof sealing structure of low-voltage inverter

Abstract

The invention discloses an efficient dustproof sealing structure of a low-voltage inverter. The efficient dustproof sealing structure comprises a bottom shell, a top cover, a connecting and fixing block, a cable through opening, an automatic closing structure, a pressing and positioning structure and an auxiliary heat dissipation device. By arranging the automatic closing structure, the closing plate is rotationally connected with the left rotating head of the rear fixing plate through the right rotating head and is connected through the reset spring, so that after a cable does not penetrate through the cable through hole, the closing plate automatically closes the cable through hole through reset of the reset spring, dust is prevented from entering the cable through hole, and the sealing and dustproof effects are improved; by arranging the pressing and positioning structure, the pressure is provided by the pressure spring at the bottom of the top plate, so that the rubber gasket can press and position the upper end of the low-voltage inverter, the low-voltage inverter after being put in is prevented from deviating, and an accessed cable cannot be loosened and separated.

Description

technical field [0001] The invention relates to the related field of inverters, in particular to a high-efficiency dust-proof sealing structure of a low-voltage inverter. Background technique [0002] The inverter is a converter that converts DC power into constant frequency and constant voltage or frequency modulation and voltage regulation AC power. It is composed of inverter bridge, control logic and filter circuit. It is widely used in air conditioners, home theaters, electric grinding wheels, electric tools, and sewing machines. , DVD, VCD, computer, TV, washing machine, range hood, refrigerator, video recorder, massager, fan, lighting, etc. In foreign countries, due to the high penetration rate of cars, you can use inverters to connect batteries to drive electrical appliances when you go out to work or travel. and various tools. [0003] At present, when the existing low-voltage inverter is used outdoors or in a dusty environment, it needs to be sealed by a dust-proof...

AI Technical Summary

Problems solved by technology

[0003] At present, when the existing low-voltage inverter is used outdoors or in a dusty environment, it needs to be sealed by a dust-proof sealing structure to ensure the normal use of the low-voltage inverter. However, the low-voltage inverter needs to pass through the sealing structure through cables. Connect external components, and when the through port is not in use, dust usually enters, which affects the sealing effect, and the low-voltage inverter cannot be positioned after it is placed in the dust-proof sealing structure, and the position is easy to loosen and shift , causing the connected cables to loosen and detach, which affects the use. At the same time, because the low-voltage inverter generates heat when it is in use, and the dust-proof sealing structure is relatively sealed, the heat dissipation is poor, which affects the service life of the low-voltage inverter.

Images