| 摘要 |
An electromagnetic relay includes: a first member integrally including a first horizontal portion to which an armature is fixed, a vertical portion to which a yoke is fixed, a hinge spring connected between the vertical portion and the first horizontal portion, a spring arm including a pair of movable contacts, and a pair of first terminals extended downward from the vertical portion; a second member integrally including a front plate portion extended in front of an electromagnet in a vertical direction, a second horizontal portion including a pair of fixed contacts opposed to the movable contacts, and a pair of second terminals extended downward from the front plate portion; a pair of permanent magnets that sandwich the movable contacts and the fixed contacts in a right-to-left direction and that is not opposed to the electromagnet; and a cover including accommodating portions accommodating the permanent magnets. |
| 主权项 |
1. An electromagnetic relay comprising:
an electromagnet; a first member configured to integrally include a first horizontal portion to which an armature to be attracted to the electromagnet is fixed, a vertical portion to which a yoke connected to the electromagnet and the armature is fixed, a hinge spring connected between the vertical portion and the first horizontal portion, a spring arm that is extended frontward from the first horizontal portion and includes a pair of movable contacts, and a pair of first terminals that is extended downward from the vertical portion; a second member configured to integrally include a front plate portion that is extended in front of the electromagnet in a vertical direction, a second horizontal portion that is formed by bending a top portion of the front plate portion rearward, is extended from a top portion of the front plate portion, and includes a pair of fixed contacts opposed to the pair of movable contacts, and a pair of second terminals extended downward from the front plate portion; a pair of permanent magnets configured to be arranged at positions at which the pair of permanent magnets sandwiches the pair of movable contacts and the pair of fixed contacts and is not opposed to the electromagnet in a right-to-left direction, wherein an uninterrupted path is formed between the pairs of movable and fixed contacts; and a cover configured to include an accommodating portion that accommodates the pair of permanent magnets and to cover the electromagnet, the first member, and the second member, wherein, when the electromagnet is energized, and the movable contacts are spaced from the fixed magnets, a direction of a magnetic field extends from one of the permanent magnets, across the uninterrupted path between the pairs of movable and fixed contacts and to the other of the permanent magnets, and an arc formed between the movable and fixed contacts is extinguished by being moved by the magnetic field away from between the movable and fixed contacts and to the front plate portion. |
