Electric valve

Abstract

The invention provides an electric valve. The electric valve comprises a coil, a valve body and a locating plate. The coil comprises a coil winding and a plastic coated layer, a plurality of first locating pieces are arranged on the plastic coated layer and distributed on the plastic coated layer in a circumferential shape, and the first locating pieces and the plastic coated layer are integrally formed in the injection molding process. One end of the valve body is inserted into the coil. The locating plate is a sheet metal part and comprises a ring and a fixing piece. The ring is fixedly sleeved on the valve body, the fixing piece comprises a connecting part, a snap-in part and a second locating piece, the second locating piece is located between the connecting part and the snap-in part, the connecting part is formed by three times of bending, the snap-in part is formed by one time of bending one of the first locating pieces is in snapping fit with the second locating piece, and the bending position of the snap-in part tightly abuts against the plastic coated layer of the coil. The coil and the valve body of the electric valve are fixed reliably and convenient to disassemble and assemble, and a plurality of locating points are arranged when the coil and the valve body are assembled in the circumferential direction; moreover, the electric valve is little in consumed material of a fixing structure and low in manufacturing cost.

Description

technical field [0001] The invention relates to a fluid control component, in particular to an electric valve. Background technique [0002] Electric valves such as electronic expansion valves or solenoid valves need to use coils to energize to generate a magnetic field to control the flow or switch action of the valve body. In order to achieve reliable action of the valve body, the coil and the valve body need to be fitted and fixed to ensure that the axial relative position and the circumferential relative position are fixed. In order to ensure the performance of the delivered product, the valve body and coil need to be assembled and tested during production. However, because the valve body needs to be flame-welded with the copper pipeline of the air conditioner, the coil is mainly composed of enameled wire and plastic parts and cannot be heated. Therefore, the valve body and coil must be packaged and shipped separately when delivered to the customer. After the customer ...

AI Technical Summary

Problems solved by technology

These are the existing electric valve can not be achieved

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