Buckle switch, buckle including buckle switch, and seat belt device including buckle

摘要

In order to provide a buckle switch (1) which can sufficiently ensure electrical conduction between movable contacts (9a-9c) and fixed contacts (7, 8, 25), the fixed contacts (7, 8, 25) are provided in a switch main body (2). In a movable piece (10), the movable contacts (9a-9c) electrically connected to one another are positioned in a straight line perpendicular to the movement direction of the movable piece (10). The movable contacts (9a, 9b) are separated from or slidably contact the fixed contacts (7, 8), respectively. The movable contact (9c) always slidably contacts the fixed contact (25). A lower edge (7b) of the fixed contact (7) and an upper edge (8a) of the fixed contact (8) are positioned in another straight line perpendicular to the movement direction of the movable piece (10). Thus, it is possible to ensure electrical conduction between the fixed contacts and the movable contacts for a long time and the switching time of the switch can be shortened.