US 12,437,948 B2
Electromagnetic relay
Ming-Chang Kuo, Taichung (TW)
Assigned to Excel Cell Electronic Co., Ltd., Taichung (TW)
Filed by EXCEL CELL ELECTRONIC CO., LTD., Taichung (TW)
Filed on Sep. 20, 2023, as Appl. No. 18/470,804.
Claims priority of application No. 111139059 (TW), filed on Oct. 14, 2022.
Prior Publication US 2024/0128039 A1, Apr. 18, 2024
Int. Cl. H01H 50/54 (2006.01); H01H 50/64 (2006.01)
CPC H01H 50/54 (2013.01) [H01H 50/645 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An electromagnetic relay comprising:
a base unit;
an electromagnetic unit disposed on said base unit, and capable of generating a magnetic field when energized;
a magnetic attraction unit disposed on said base unit, connected to said electromagnetic unit, and including a magnetic moving subunit, said electromagnetic unit attracting said magnetic moving subunit via the magnetic field when energized;
a first conductive terminal disposed on said base unit and including a first contact;
a second conductive terminal disposed on said base unit and including a second contact that is spaced apart from said first contact in a first direction, said first conductive terminal and said second conductive terminal cooperatively defining a gap therebetween; and
a movable conductive terminal disposed on said base unit and including a movable lead and a movable contact, said movable lead having a positioning portion that is positioned at said base unit, a swing portion that extends in a second direction from said positioning portion to said gap between said first conductive terminal and said second conductive terminal, and a resilient linkage portion, said magnetic moving subunit being operable to push said movable lead such that said movable lead is resiliently bent, said movable contact being disposed on said swing portion, said resilient linkage portion being located between said positioning portion and said movable contact, extending from said swing portion toward said electromagnetic unit in the first direction and then toward said movable contact in the second direction, the second direction and the first direction being non-parallel, when said electromagnetic unit is energized, said magnetic moving subunit being attracted by said electromagnetic unit and pushing said resilient linkage portion of said movable lead such that said resilient linkage portion urges said swing portion to swing and that said movable contact disposed on said swing portion is urged to be in contact with one of said first contact and said second contact, when said electromagnetic unit is de-energized, said electromagnetic unit ceasing to attract said magnetic moving subunit such that said movable contact is in contact with the other one of said first contact and said second contact.