Abstract:
PROBLEM TO BE SOLVED: To efficiently cancel contact repulsion force and to prevent a deterioration in contact pressure acting between contacts.SOLUTION: A contact device includes a fixed terminal 33 having a fixed contact 32, a movable contactor 35 having a movable contact 34 coming into contact with and separating from the fixed contact 32, and a yoke 52 arranged so as to draw a magnetic flux generated in the movable contactor 35 and cancel contact repulsion force acting on the movable contactor 35.
Abstract:
PROBLEM TO BE SOLVED: To increase a load voltage which can be cut off, without causing an increase in size.SOLUTION: A contact device comprises: a contact part 1 having a pair of fixed contacts 11A, 11A and a movable contact piece 20 which is brought into contact with and separated from the pair of fixed contacts 11A, 11A; and a pair or pairs of separation parts (first and second separation parts 12, 12 and 13, 13) made of a metal material. The pair or pairs of separation parts are arranged opposite to each other across the contact part 1 in an arrangement direction of the pair of fixed contacts 11A, 11A.
Abstract:
PROBLEM TO BE SOLVED: To provide a contact device capable of securing the operability of a movable contactor with certainty.SOLUTION: In a contact device 1, a yoke 50 abuts on a wall surface 41d of a wall part 41c to regulate rotation of a movable contactor 29 to which the yoke 50 is attached. When the movable contactor 29 to which the yoke 50 is attached rotates, the yoke 50 abuts only on a wall surface 41dR of one region R1 obtained by dividing the wall surface 41d by a virtual line L passing through a rotation center C of the yoke 50.
Abstract:
PROBLEM TO BE SOLVED: To provide a contact device capable of reliably bringing a movable contact into contact with a fixed contact at three contact points when the movable contact and the fixed contact are made to be in contact with each other at the three contact points.SOLUTION: A contact device 1 includes: plural fixed terminals 37 each having a fixed contact 35; a movable terminal 28 which is provided with movable contacts 31a, 31b and 31c each detachably coming into contact with the fixed contact 35, and which performs a relative movement with respect to the fixed terminal 37; and a pressure spring 33 which presses the movable terminal 28 to cause the fixed contact 35 to contact with the movable contacts 31a, 31b and 31c. The contact device 1 is arranged so that a load center x of the pressure spring 33 is positioned on a line L2 connecting a midpoint M1 of a line L1 connecting so that the distance between the movable contacts 31a, 31b and 31c and any two of areas R1, R2 and R3 coming into contact with the fixed contact 35 is the shortest, and a point P1 where the distance from the midpoint M1 in the other contact area is the shortest.
Abstract:
PROBLEM TO BE SOLVED: To provide a contact device capable of efficiently increasing contact pressure between contacts and arc cut-off performance.SOLUTION: A contact device comprises: a contact block 3 including a pair of fixed terminals 33 which have fixed contacts 32, respectively, and a movable contact piece 35 which has movable contacts 34 arranged in a row on its top face to make contact with and separate from the fixed contacts 32, respectively; a drive unit 8 including a contact pressure spring 36 which biases the movable contact piece 35 upward, a holding body 81 which has a restriction part 813 for making contact with the top face of the movable contact piece 35 so as to restrict its upward movement, and which holds the contact pressure spring 36, a movable shaft 82 which is coupled to the holding body 81, and an electromagnet block 2 which drives the movable shaft 82; a container 61; a yoke body 63 which is fixed to the container 61 so as to be opposed to the top face of the movable contact piece 35; a pair of permanent magnets 46 which are opposed to each other across the contact block 3; and a yoke body 64 which is fixed to the movable contact piece 35 so as to be opposed to the yoke body 63.
Abstract:
PROBLEM TO BE SOLVED: To provide a contact device capable of efficiently increasing contact pressure between contacts and arc cut-off performance.SOLUTION: A contact device comprises: a contact block 3 including a pair of fixed terminals 33 which have fixed contacts 32, respectively, and a movable contact piece 35 which has a pair of movable contacts 34 arranged in a row on its one face to make contact with and separate from the pair of fixed contacts 32, respectively; driving means 8 which drives the movable contact piece 35 so that the movable contacts 34 make contact with and separate from the fixed contacts 32; a container 61 which is not moved by driving force of the driving means 8; a pair of permanent magnets 46 which are arranged oppositely to each other across the contact block 3 in an alignment direction of the movable contacts 34, and which have different polarities on their opposing faces; and a yoke body 63 which is fixed to the container 61 so as to be arranged between the pair of permanent magnets 46, and which is opposed to the one face of the movable contact piece.
Abstract:
PROBLEM TO BE SOLVED: To provide a contact device capable of preventing a coil terminal from dropping off from a case and an electromagnetic relay mounted with the contact device.SOLUTION: A contact device 1 includes: a fixing part 2 having a coil bobbin 11 with a coil 13 wound thereon; and a movable part 3 movable relative to the fixing part 2. The fixing part 2 and the movable part 3 are stored in the case 7. The coil bobbin 11 has a fixing projection 11 formed thereon to be fixed to the case 7; and the case 7 includes a through hole 7a through which the fixing projection 11 is inserted to fix the same.