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US 11,257,646 B2Granted
Contact device, electromagnetic relay, and electrical device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTomokazu Harano, Tatsuo Aratani
Life of this patent
Estimating the term…
Abstract
A contact device includes a moving contactor, a pair of moving contacts arranged in one direction, a pair of fixed terminals, and a pair of fixed contacts. At least one fixed terminal, selected from the pair of fixed terminals, includes a contact holder. The contact holder includes a first fixed extension and a second fixed extension. As for either a current component flowing in the one direction into the fixed contact or a current component flowing in the one direction out of the fixed contact, the current component flowing through the first fixed extension has a larger amount of current than a current component flowing through the second fixed extension.
Claims12
A contact device comprising:
- a moving contactor;
- a pair of moving contacts provided for the moving contactor and arranged side by side in one direction;
- a pair of fixed terminals arranged side by side in the one direction to face the moving contactor;
- and
- a pair of fixed contacts provided for the pair of fixed terminals, respectively,
- the moving contactor being configured to move back and forth between a closed position where the pair of moving contacts are in contact with the pair of fixed contacts, respectively, and an open position where the pair of moving contacts are out of contact with the pair of fixed contacts, respectively,
- at least one fixed terminal, selected from the pair of fixed terminals, including a contact holder facing the moving contactor in a direction in which the closed position and the open position are connected together,
- the contact holder including:
- a first fixed extension protruding, in the one direction, from the fixed contact of the one fixed terminal toward the other fixed terminal;
- and
- a second fixed extension protruding from the fixed contact away from the other fixed terminal,
- in the moving contactor, a current flowing along the one direction,
- the first fixed extension including an overlapping portion,
- the overlapping portion overlapping, when viewed in a direction perpendicular to the one direction, with a portion of the moving contactor through which the current flows along the one direction,
- in the overlapping portion, a current flowing along the one direction, and
- as for either a current component flowing in the one direction into the fixed contact or a current component flowing in the one direction out of the fixed contact, the current component flowing through the first fixed extension having a larger amount of current than a current component flowing through the second fixed extension.
13 more elements
A contact device comprising:
- a moving contactor;
- a pair of moving contacts provided for the moving contactor and arranged side by side in one direction;
- a pair of fixed terminals arranged side by side in the one direction to face the moving contactor;
- and
- a pair of fixed contacts provided for the pair of fixed terminals, respectively,
- the moving contactor being configured to move back and forth between a closed position where the pair of moving contacts are in contact with the pair of fixed contacts, respectively, and an open position where the pair of moving contacts are out of contact with the pair of fixed contacts, respectively,
- at least one fixed terminal, selected from the pair of fixed terminals, including:
- a contact holder facing the moving contactor in a direction in which the closed position and the open position are connected together,
- an extended portion which is arranged in a direction intersecting with the one direction with respect to the contact holder and which is connected to a member to be connected to an external device,
- a connecting terminal portion connecting the contact holder and the extended portion, and
- a cutout portion,
- the contact holder including:
- a first fixed extension protruding, in the one direction, from the fixed contact of the one fixed terminal toward the other fixed terminal;
- and
- a second fixed extension protruding from the fixed contact away from the other fixed terminal,
- the cutout portion is located in between the second fixed extension and the extended portion, and
- as for either a current component flowing in the one direction into the fixed contact or a current component flowing in the one direction out of the fixed contact, the current component flowing through the first fixed extension having a larger amount of current than a current component flowing through the second fixed extension.
14 more elements
Dependencies are inferred from the claim text.