Magnet retaining relay

Abstract

The invention discloses a magnetic latching relay comprising a magnetic circuit part, a contact part and a counterforce reed. The magnetic circuit part is composed of a coil, an E-shaped static magnetizer component and a moveable magnetizer component; the coil is wound on the static magnetizer component and a movable magnetizer component comprises a magnetic steel and a movable magnetizer arranged at the both sides of the magnetic steel with the same structure, the E-shaped static magnetizer component is formed by connecting two magnetizers and at lease one magnetizer is provided with a U-shaped structure. The magnetic circuit takes the shape of 'two squares stacked vertically', solves the problem of unevenness of magnetic circuit contact surface and enhances the stability of product performance; the static magnetizer of the magnetic circuit part adopts the U-shaped structure, and the movable magnetizer adopts two same U-shaped or similar structures; therefore, the manufacture difficulty of parts and assemble difficulty and precision of components are reduced, the counterforce reed causes the absorbing counterforce of the relay in working state to be balanced, thus enhancing the reliability.

Description

technical field [0001] The invention relates to a relay, in particular to a magnetic latching relay. Background technique [0002] The existing magnetic latching relay consists of a magnetic circuit part, a contact part, a pushing part and a base part. Figure 1a It is a schematic structural diagram of a typical high-power magnetic latching relay. The static spring part 71 and the moving spring part 72 are installed on the base 70. The pushing part is a pushing block 73 with slots on both sides. The magnetic circuit part is composed of "workers" Shape movable magnetizer part 74, rotating shaft 75, static magnetizer 76 and coil 77 parts are formed, and " work " shape movable magnetizer part rotates around the shaft, left movable magnetizer 74a, right movable magnetizer 74b and left static The magnetic conductor 76a and the right static magnetic conductor 76b are bonded to make the magnetic circuit part work. Figure 1b It is a structural schematic diagram of the magnetic cir...

AI Technical Summary

Problems solved by technology

In this kind of relay structure, the base is provided with slots embedded in the dynamic and static spring parts and the magnetic circuit part, which is difficult to process, and in the magnetic circuit part, it is relatively difficult to make the contact surface of the static magnetizer and the movable magnetizer reach a flat surface. Difficulty, so it is easy to produce unstable product performance

The parts required for this purpose have high dimensional accuracy, high assembly difficulty and high precision.

In addition, after the contacts are closed, due to the existence of contact pressure to make the contacts open, and after the contacts are opened, there is no necessary auxiliary reaction force to make the contacts close, so this structure will cause the phenomenon of unbalanced suction reaction force of the relay

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