摘要:
Provided is an electromagnetic switch such that it is possible to simultaneously drive at least a main contact mechanism and a plurality of contact mechanisms. The electromagnetic switch is such that a plurality of contact mechanisms (9A), (9B) having at least a fixed contact and a movable contact disposed so as to be connectable to and detachable from the fixed contact are disposed inside a contact housing case (4), the electromagnetic switch including a movable contact holding portion (15) that holds the movable contacts (14A), (14B) of the plurality of contact mechanisms, and an electromagnet unit (3) having a movable plunger (45) that causes the movable contact holding portion (15) to move.
摘要:
There is provided a contact device, and an electromagnetic switch in which the contact device is used, such that an arc generated between a fixed contact and a movable contact when the contacts are opened can be easily extinguished. The contact device includes a pair of fixed contacts (111), (112) fixedly disposed maintaining a predetermined interval inside an arc extinguishing chamber (102) and a movable contact (130) disposed so as to be connectable to and detachable from the pair of fixed contacts inside the arc extinguishing chamber (102), wherein a first arc root movement promotion portion (118b), (118c) that promotes movement in a direction away from the movable contact of the root of an arc generated when the contacts are opened and the movable contact moves away is formed on each of the pair of fixed contacts, and a second arc root movement promotion portion (130b), (130c) that promotes movement in a direction away from the relevant fixed contact of the root of an arc generated when the contacts are opened and the movable contact moves away from the pair of fixed contacts is formed on the movable contact (130).
摘要:
Provided is an electromagnetic switch that can simultaneously drive a main contact mechanism and auxiliary contact mechanisms, and a contact position regulating method thereof. A main contact housing portion (6) that houses a main contact mechanism having a pair of fixed contacts (11a), (11b) fixedly disposed maintaining a predetermined interval and a movable contact (12) disposed so as to be connectable to and detachable from the pair of fixed contacts in a contact housing case (4), an auxiliary contact housing portion (7) that houses two or more auxiliary contact mechanisms (34A), (34B) having fixed contacts and movable contacts disposed so as to be connectable to and detachable from the fixed contacts, and an electromagnet unit (3) that moves the movable contact of the main contact mechanism and the movable contacts of the auxiliary contact mechanisms, are disposed in series.
摘要:
Provided is an electromagnetic contactor such that an arc generated when a movable contact separates from fixed contacts can be easily extinguished. A movable contact (130) is disposed so as to be connectable to and detachable from a pair of fixed contacts (111),(112) disposed maintaining a predetermined interval inside a contact housing case (102) having insulating properties and an arc extinguishing chamber (145), (146) is formed in positions in which contacts of the pair of fixed contacts and contacts of the movable contact come into contact, and at least the inner wall surface side of the arc extinguishing chamber that comes into contact with an arc is formed of a high thermal conductivity material having thermal conductivity higher than that of a synthetic resin molded material.
摘要:
Provided is an electromagnetic switch that can simultaneously drive a main contact mechanism and auxiliary contact mechanisms, and a contact position regulating method thereof. A main contact housing portion (6) that houses a main contact mechanism having a pair of fixed contacts (11a), (11b) fixedly disposed maintaining a predetermined interval and a movable contact (12) disposed so as to be connectable to and detachable from the pair of fixed contacts in a contact housing case (4), an auxiliary contact housing portion (7) that houses two or more auxiliary contact mechanisms (34A), (34B) having fixed contacts and movable contacts disposed so as to be connectable to and detachable from the fixed contacts, and an electromagnet unit (3) that moves the movable contact of the main contact mechanism and the movable contacts of the auxiliary contact mechanisms, are disposed in series.
摘要:
There is provided an electromagnetic contactor wherein it is possible to reduce the size thereof while securing a sufficient arc extinguishing function regardless of the orientation of current flowing through contact portions. The electromagnetic contactor includes a contact device (100) wherein a pair of fixed contacts (111) and (112) and a movable contact (130) disposed so as to be able to come into and out of contact with the pair of fixed contacts (111) and (112) are housed in a contact housing case (102) formed from an insulating material, wherein arc extinguishing permanent magnets (143) and (144) whose mutually opposing magnetic pole faces are magnetized with the same polarity are disposed on respective inner peripheral surfaces of the contact housing case (102) along the movable contact (130) so as to be brought near to the movable contact (130).
摘要:
There is provided an electromagnetic contactor including a function of positioning a permanent magnet for arc extinguishing, a function of protecting from an arc, and necessary insulating functions, thereby enabling a reduction in size while ensuring a sufficient arc extinguishing function. The electromagnetic contactor includes a contact device housing in a contact housing case (102), in which a pair of fixed contacts (111), (112), and a movable contact (130) are disposed so as to be connectable to and detachable from the pair of fixed contacts, and has on the inner peripheral surface of the contact housing case (102) an insulating cylinder (140) of a bottomed tubular form that encloses the pair of fixed contacts and movable contact, wherein the insulating cylinder (140) positions arc extinguishing permanent magnets (143), (144) that extinguish an arc generated between the pair of fixed contacts and movable contact, magnet housing portions (141), (142) that protect the arc extinguishing permanent magnets from an arc are formed opposing side surfaces of the movable contact on the inner peripheral surface of the insulating cylinder, and arc extinguishing spaces (145), (146) are formed on outer sides of the magnet housing portions in the extension direction of the movable contact.