Microminiature balance-force type sealed DC electromagnetic relay

Abstract

The invention discloses a microminature balance-force type sealed DC electromagnetic relay. A conductive piece is fixed on a pedestal, the lower end of a connecting card is installed in an installation hole of the conductive piece, and the upper end of the connecting card is installed on a bottom surface of a pressure piece. A movable contact spring is installed in an installation hole of an insulating block, and a movable contact is fixedly installed at the right end of the movable contact spring. A transition piece is installed on the pedestal, and a static contact is fixedly installed on the transition piece. The insulating block is installed on a shaft frame through a rotating shaft, and an armature is installed in an installation groove on the shaft frame. A first yoke is installed onthe shaft frame, and a magnetic steel is installed on the shaft frame. A second yoke is installed on the shaft frame, and a third yoke is installed on the shaft frame, and is close to the right sidesurface of the shaft frame. A coil is installed on the shaft frame, and is located between the second yoke and the third yoke. The electromagnetic relay is simple in structure, is good in manufacturability, is high in operability, guarantees the assembly precision easily, can improve the assembly efficiency, and achieves the batch production.

Description

technical field [0001] The invention belongs to the technical field of relays, and in particular relates to an ultra-small balanced force type sealed DC electromagnetic relay. Background technique [0002] After the existing electromagnetic relay structure is assembled, because the bracket basically covers the electromagnetic structure, it is difficult to remove the excess between the yoke and the armature; at the same time, the electromagnetic system can only be completed after the mechanism is assembled, which makes adjustment and detection inconvenient, and it is difficult to achieve higher Assembly efficiency. Moreover, due to the close distance between the parts at the junction of the armature, the yoke II and the yoke III, when the assembly accuracy is slightly deviated, a large flux leakage will be generated, which is difficult to meet the design requirements; at the same time, the structure has high requirements for the accuracy of the parts and assembly accuracy. H...

AI Technical Summary

Problems solved by technology

[0002] After the existing electromagnetic relay structure is assembled, because the bracket basically covers the electromagnetic structure, it is difficult to remove the excess between the yoke and the armature; at the same time, the electromagnetic system can only be completed after the mechanism is assembled, which makes adjustment and detection inconvenient, and it is difficult to achieve higher Assembly efficiency

Moreover, due to the close distance between the parts at the junction of the armature, the yoke II and the yoke III, when the assembly accuracy is slightly deviated, a large flux leakage will be generated, which is difficult to meet the design requirements; at the same time, the structure has high requirements for the accuracy of the parts and assembly accuracy. Higher, not easy to achieve higher assembly efficiency

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