US 12,354,820 B2
Electromagnetic relay device
Masahiro Tanimoto, Kariya (JP); Mitsugu Fujiwara, Kariya (JP); Hiroshi Nagura, Kariya (JP); and Makoto Kamiya, Anjo (JP)
Assigned to DENSO CORPORATION, Kariya (JP); and DENSO ELECTRONICS CORPORATION, Anjo (JP)
Filed by DENSO CORPORATION, Kariya (JP); and DENSO ELECTRONICS CORPORATION, Anjo (JP)
Filed on Sep. 8, 2022, as Appl. No. 17/940,056.
Application 17/940,056 is a continuation of application No. PCT/JP2021/009580, filed on Mar. 10, 2021.
Claims priority of application No. 2020-042232 (JP), filed on Mar. 11, 2020.
Prior Publication US 2023/0005692 A1, Jan. 5, 2023
Int. Cl. H01H 50/60 (2006.01); H01H 50/20 (2006.01); H01H 50/36 (2006.01)
CPC H01H 50/60 (2013.01) [H01H 50/20 (2013.01); H01H 50/36 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An electromagnetic relay device comprising:
a mover including a movable contact movable to abut onto and separate from a stationary contact through a contact region between the movable contact and the stationary contact;
a plunger configured to cause the mover to reciprocate to accordingly cause the movable contact to abut onto or separate from the stationary contact;
a solenoid unit configured to cause the plunger to reciprocate in a predetermined reciprocation direction, the solenoid unit comprising:
an electromagnetic coil configured to generate magnetic flux when energized;
a movable core having a slidable contact portion that has an outer peripheral surface, the movable core being configured to reciprocate based on energization of the electromagnetic coil; and
a support member configured to slidably support the outer peripheral surface of the slidable contact portion of the movable core;
a movable wall member between the slidable contact portion and the contact region, the movable wall member being linked to the plunger and the movable wall member being configured to reciprocate together with the plunger, the movable wall member being arranged to occupy a region in the electromagnetic relay device, the region containing at least the slidable contact portion when viewed in the reciprocation direction; and
a housing having an inner peripheral surface, wherein
the mover, the plunger, and the solenoid unit are installed in the housing; and
the movable wall member has an outer peripheral edge, and is arranged such that the outer peripheral edge faces the inner peripheral surface of the housing with an annular clearance formed therebetween.