Novel combined high-speed electromagnet iron core

Abstract

The invention relates to a novel combined high-speed electromagnet iron core, which comprises a plurality of silicon steel sheets and an iron core seat provided with radial through grooves, wherein the silicon steel sheets are embedded into the radial through grooves for forming an iron core combining element, the length of each silicon steel sheet is M, the length of each radial through groove is N, the outer diameter D of an annular coil groove meets the following relational expression of D<M<=N, the iron core combining element is welded and connected at one pair of notch parts of the two side surfaces, and the end surface of the iron core combining element is provided with the annular coil groove. The novel combined high-speed electromagnet iron core has the advantages that the structure is simple, the processing process is simple, the production efficiency is high, the processing cost is low, the silicon steel sheets does not need to be cut again, the material utilization rate is high, the problems of low processing efficiency and high defective rate of three-part connection in the prior art are avoided, in the subsequent electromagnet assembly process, when the iron core combining element is assembled and bonded with a case, the notches naturally formed at the two sides form an epoxy glue filling opening, the filling is convenient and smooth, and the glue filling quality is guaranteed.

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

Images