Patent ID: 7982562
Filing Date: 2011-07-19
Classification: H01H

Abstract:
1. A magnetic latching relay, comprising: a yoke assembly; a magnetic steel assembly; a contact system, comprising a movable contact spring assembly having back contact springs, an immovable contact spring assembly and a pusher pad; and a shell, comprising a bottom case having clip-shaped bosses, and an upper cover; wherein said clip-shaped bosses are formed outside two side walls of said bottom case to fasten extension ends of said movable contact springs and immovable contact springs of said immovable contact spring assembly; said clip-shaped bosses are supported with bolts to clamp the springs extending out of said clip-shaped bosses; and each back contact spring is 59.5 mm long, 20 mm wide and 03±0.02 thick; one section of 7.6 mm longitudinal length on a root of each back contact spring constitutes a riveting part connected to a curved surface of 42 mm length; a distance between a center of an outer arc of the main part of each back contact spring and a corresponding chord is 1.2 mm; three Φ2.6 mm rivet holes are arranged on a center line 3.5 mm below a lower root of each back contact spring; one Φ3.5 mm rivet hole is arranged 51±0.05 mm apart from center lines of the three rivet holes of the back contact spring for riveting the contact with the movable contact spring.