Electromagnetic switch and contact position regulating method thereof

摘要

An electromagnetic switch includes a main contact housing portion housing a main contact mechanism having a pair of fixed contacts fixedly disposed maintaining a predetermined interval and a movable contact disposed to connect with and separate from the pair of fixed contacts in a contact housing case; an auxiliary contact housing portion housing at least two auxiliary contact mechanisms having fixed contacts and movable contacts disposed connecting to and separating from the fixed contacts; and an electromagnet unit having a movable plunger individually coupled to move the movable contact of the main contact mechanism and the movable contacts of the auxiliary contact mechanisms. The main contact housing portion, the auxiliary contact housing portion, and the electromagnet unit are disposed in series.

主权项

1. An electromagnetic switch, comprising:
a main contact housing portion including in a contact housing case a main contact mechanism having a pair of main fixed contacts fixedly disposed to maintain a predetermined interval and a main movable contact disposed to contact with and separate from the pair of main fixed contacts; an auxiliary contact housing portion including
at least two auxiliary contact mechanisms having auxiliary fixed contacts and auxiliary movable contacts disposed to contact with and separating from the auxiliary fixed contacts,auxiliary fixed contact holding portions to hold the auxiliary fixed contacts, andan auxiliary movable contact holding portion to hold the auxiliary movable contacts via auxiliary contact springs; an electromagnet unit having a movable plunger individually coupled to and moving the main movable contact of the main contact mechanism and the auxiliary movable contacts of the auxiliary contact mechanisms; and a position regulating mechanism to regulate a position of the auxiliary movable contact holding portion in respect to the movable plunger in a moving direction of the auxiliary movable contacts, wherein the main contact housing portion, the auxiliary contact housing portion, and the electromagnet unit are disposed in series.