Safety switch
OwnerTsung Mou Yuinventor
Life of this patent
Estimating the term…
Abstract
A switch includes a body with a switch member on a top thereof, an extension extends from an underside of the switch member, and a substantially inverted L-shaped slot is defined through the extension. Two terminals extend through a bottom of the body, in which one of the terminals is fixed with a contact plate. The contact plate has a tongue with a free end, which contacts the other terminal when the circuit is ON, and is separated from the other terminal when the circuit is OFF. An operation member has a first end movably engaged with the slot and a second end connected with the contact plate. Under the current overload condition, the contact plate deforms, the first end of the operation member move downward along the vertical space of the slot, and the switch member is pivoted by a torsion spring to the OFF position.
Claims5
A switch, comprising:
- a body with a top opening and a switch member pivotally engaged with the top opening of the body, an extension extending from an underside of a first end of the switch member and a slot defined through the extension, a first terminal and a second terminal extending through a bottom of the body, a first contact point connected to the second terminal;
- an operation member having a first end movably engaged with the slot of the extension;
- and
- a contact plate being a flexible metal plate and having a first end thereof connected to a second end of the operation member and a second end of the contact plate fixed to the first terminal, an opening defined through the contact plate and a tongue having a first end connected to an inside of the opening, a second end of the tongue being a free end and having a second contact point which is removably in contact with the first contact point on the second terminal, the second end of the contact plate and the second end of the tongue being deformed in opposite direction under the current overload condition.
Dependencies are inferred from the claim text.