Waterproof normally-open DC contactor

Abstract

The invention relates to a waterproof normally-open DC contactor. The contactor comprises a base assembly, a coil assembly, an outer housing and a core rod assembly, wherein the base assembly and theouter housing are installed in a matched mode to form an inner containing cavity, and the coil assembly and the core rod assembly are installed in the inner containing cavity. The contactor is characterized in that the core rod assembly comprises a core rod, a moving contact piece, a moving contact, an upper insulating bush, a lower insulating bush, a contact spring and an elastic piece, the moving contact is installed on the moving contact piece, the core rod is provided with an annular limiting table, the lower insulating bush is sleeved on the core rod and arranged on an end surface of theannular limiting table, the elastic piece is sleeved on the core rod, one end of the contact spring abuts against the lower insulating bush, the other end of the contact spring abuts against the end surface of the moving contact piece, and the upper insulating bush is sleeved on the core rod and fixedly connected with the core rod. The contactor is advantaged in that a creepage distance of a product contact is increased, insulation and voltage withstanding levels of a product load loop and other metal pieces and electrified parts are improved, product performance is improved, and the work is more reliable.

Description

technical field [0001] The invention relates to a waterproof normally open DC contactor. It can be used in electronic control systems such as telecommunication equipment, construction machinery, battery cars, electric forklifts, automobiles, trains, ships, and uninterruptible power supplies. Background technique [0002] The original DC contactor is widely used in the field of electronic control systems such as telecommunication equipment and uninterruptible power supply. Due to market promotion, this type of product is used in the new energy automobile industry. The DC contactors currently on the market are not completely waterproof. In the environment with low temperature, after overnight cooling, the inside of the DC contactor freezes and cannot be closed successfully, causing the car to fail to start. At the same time, the current product performance is not high and the service life is broken. In order to meet the market demand, the product is improved performance, expa...

AI Technical Summary

Problems solved by technology

[0002] The original DC contactor is widely used in the field of electronic control systems such as telecommunication equipment and uninterruptible power supply. Due to market promotion, this type of product is used in the new energy automobile industry. The DC contactors currently on the market are not completely waterproof. In the environment with low temperature, after overnight cooling, the inside of the DC contactor freezes and cannot be closed successfully, causing the car to fail to start. At the same time, the current product performance is not high and the service life is broken. In order to meet the market demand, the product is improved Performance, expand market share, develop new waterproof DC contactor

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