Patent ID: 9640336
Date: 2017-05-02
CPC Classifications: H01F,H01H

Claim:
1. A magnetic latching relay having an asymmetrical solenoid structure, comprising an electromagnet portion, a contacting portion, and a push portion; the push portion being fitted between the electromagnet portion and the contacting portion; the push portion comprising a movable iron core; the electromagnet portion comprising a magnetic conductive component and a coil; the movable iron core being disposed to be fitted with the magnetic conductive component and movable along a direction of an axis of the coil upon excitation of the coil, wherein the magnetic latching relay further comprises two pieces of permanent magnet, the two pieces of permanent magnets being respectively disposed on two sides of the axis of the coil and being respectively adjacent to or in contact with corresponding sides of the magnetic conductive component; and the two pieces of permanent magnets being within a movement range of the movable iron core in the direction of the axis of the coil, and being biased toward a side of a moving direction of the movable iron core when contacts are in a closed state such that a retaining force of the movable iron core in the closed state of the contacts is substantially equal to a retaining force of the movable iron core in an opened state of the contacts, wherein the magnetic conductive component comprises a yoke component, and a first fixed iron core; the movable iron core is disposed to be fitted with the first fixed iron core; and the two pieces of permanent magnets are respectively disposed on the two sides of the axis of the coil and are respectively adjacent to or in contact with corresponding sides of the yoke component, and the magnetic conductive component further comprises a second fixed iron core disposed on the axis of the coil and on the side of the moving direction of the movable iron core when the contacts are in the closed state; the movable iron core is disposed between the first fixed iron core and the second fixed iron core; and the two pieces of permanent magnets are disposed at a position between the first fixed iron core and the second fixed iron core where is closer to the second fixed iron core in the direction of the axis of the coil.