Combined high-speed electromagnet core

Abstract

A new combined high-speed electromagnet iron core, including several pieces of silicon steel sheets, an iron core seat with radial through grooves, several pieces of silicon steel sheets embedded in the radial through grooves to form an iron core assembly, the length of the silicon steel sheets is M , the length N of the radial through slot, and the outer diameter D of the annular coil slot satisfy the following relationship: D<M≤N; the iron core assembly is welded and connected at a pair of gaps on both sides, and the iron core assembly The end face is provided with an annular coil slot. The invention has simple structure, simple processing technology, high production efficiency, low processing cost, no need to cut the silicon steel sheet again, and high material utilization rate; it avoids the low processing efficiency and high defective rate of the prior art "connection of three parts" The problem is that in the subsequent electromagnet assembly process, when the iron core assembly is assembled and bonded with the shell, the gaps naturally formed on both sides form the pouring port for epoxy glue, and the pouring is convenient and smooth, which ensures the quality of the glue pouring.

Description

technical field [0001] The invention relates to an electromagnet structure, in particular to a combined iron core structure of a high-speed electromagnet. Background technique [0002] High-speed electromagnets are key control actuators for control systems such as electronically controlled fuel injection systems for diesel engines. In the diesel engine electronically controlled fuel injection system, its function is to execute the system ECU command, control the pump valve to close, and complete the precise fuel injection. The electromagnet is required to have the characteristics of fast response speed, low eddy current loss, large electromagnetic attraction force, and small size. [0003] The Chinese utility model patent No. 20082063803.1 discloses a combined high-speed electromagnet iron core, which includes silicon steel laminates, a circular iron core seat, and a non-magnetic metal jacket. Assembled body, an annular coil groove is opened on the end face of the assemble...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of structural product is that the structure is more complicated. The annular coil groove can only be processed after the three parts are connected (bonded or welded). The connection structure is poor in firmness, and the bonding or welding structure is easily damaged during processing. Low efficiency and high defective rate

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