Middle-arranged magnetic steel magnetic circuit structure with inclined surface contact

Abstract

The invention discloses a middle-arranged magnetic steel magnetic circuit structure with inclined surface contact. The magnetic circuit structure comprises an upper iron core (2), a lower iron core (8), an armature (4), a transmission rod (9) and a magnetic part for providing a generated magnetic loop, wherein the upper iron core (2) and the armature (4) are in plane contact, the lower iron core (8) and the armature (4) are in inclined surface contact, one end of the transmission rod (9) is connected with the armature (4), a main pressure spring (7) is arranged between the transmission rod (9)and the armature (4), and the magnetic part is positioned at the peripheries of the upper iron core (2) and the lower iron core (8). According to the invention, the contact surface of the armature end surface of the magnetic circuit structure and the lower iron core adopts an inclined surface structure, so that the initial electromagnetic attraction force is increased by more than one time compared with the plane contact structure, and the rigidity of the spring can be doubled due to the fact that the electromagnetic attraction force is doubled so as to double the vibration resistance of theproduct, substantially improve the vibration performance index and meet the vibration index requirement of the aerospace contactor.

Description

technical field [0001] The invention relates to a magnetic circuit structure of a magnetic holding contactor, in particular to a magnetic circuit structure of a middle-mounted magnetic steel with inclined surface contact. Background technique [0002] At present, most of the double-coil magnetic holding contactors on the market adopt a planar contact structure on the magnetic circuit part of the armature and the iron core. Due to the planar contact of this structure, the contact projected area is small, resulting in a relatively small initial electromagnetic attraction force of the entire magnetic circuit part. Small, small electromagnetic attraction leads to low stiffness of the main compression spring on the product, and small spring stiffness provides small mechanical reaction force, so the anti-vibration performance of the whole product is poor, which cannot meet the growing anti-vibration performance indicators of aviation contactors requirements. Contents of the inve...

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Problems solved by technology

[0002] At present, most of the double-coil magnetic holding contactors on the market adopt a planar contact structure on the magnetic circuit part of the armature and the iron core. Due to the planar contact of this structure, the contact projected area is small, resulting in a relatively small initial electromagnetic attraction force of the entire magnetic circuit part. Small, small electromagnetic attraction leads to low stiffness of the main compression spring on the product, and small spring stiffness provides small mechanical reaction force, so the anti-vibration performance of the whole product is poor, which cannot meet the growing anti-vibration performance indicators of aviation contactors requirements

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