| 摘要 |
<p>An electromagnetic relay includes a resin case (10), a coil (18), a movable contact (29), a fixed contact (17), a flat recess (112), a ventilation hole (111), a cooling member (19, 30) and a flat passage (113, 114). The resin case has a housing space (10a) therein. The movable contact is within the housing space and is actuated by the coil. The fixed contact is within the housing space. The flat recess is formed at the case to communicate with the housing space. The ventilation hole is formed at the case to provide communication between the recess and an exterior of the case. The cooling member is within the recess to cool flame that passes through the recess. The flat passage is formed between the cooling member and an internal wall surface of the recess and has a clearance dimension (S) such that flame is extinguished.</p> |
