US 12,293,891 B2
Electromagnetic relay with driveshaft stopper
Kohei Otsuka, Kyoto (JP); Ryota Minowa, Kyoto (JP); Hiroyuki Iwasaka, Kyoto (JP); Shinichi Ogawa, Kyoto (JP); and Ayata Horie, Kyoto (JP)
Assigned to OMRON CORPORATION, Kyoto (JP)
Appl. No. 18/263,345
Filed by OMRON Corporation, Kyoto (JP)
PCT Filed Jan. 18, 2022, PCT No. PCT/JP2022/001551
§ 371(c)(1), (2) Date Jul. 28, 2023,
PCT Pub. No. WO2022/181117, PCT Pub. Date Sep. 1, 2022.
Claims priority of application No. 2021-029801 (JP), filed on Feb. 26, 2021.
Prior Publication US 2024/0120165 A1, Apr. 11, 2024
Int. Cl. H01H 50/64 (2006.01)
CPC H01H 50/641 (2013.01) 3 Claims
OG exemplary drawing
 
1. An electromagnetic relay, comprising:
a fixed contact;
a movable contact that faces the fixed contact;
a movable contact piece connected to the movable contact;
a movable iron core that is movable in a moving direction including a contact direction in which the movable contact approaches the fixed contact and a separation direction in which the movable contact separates from the fixed contact, the movable iron core including a shaft hole extending in the moving direction;
a drive shaft connected to the movable contact piece, the drive shaft extending through the shaft hole, the drive shaft being fixed to the movable iron core;
a coil configured to generate a magnetic force to move the movable iron core in the moving direction; and
a stopper connected to the drive shaft to restrict a movement of the movable iron core in the moving direction with respect to the drive shaft,
wherein the stopper is located apart from the movable iron core in the moving direction, and
a distance between the stopper and the movable iron core in the moving direction is smaller than a movable range of the movable iron core in the contact direction after the movable contact contacts the fixed contact.