Thermally actuated switch and forming dies
AssigneeUbukata Industries Co., Ltd.
InventorsShigemi Sato, Yuji Adachi
Life of this patent
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Abstract
This invention is a thermally actuated switch in which a sealed vessel contains a fixed contact and a heat-sensitive-plate assembly that has a structure in which a movable contact is anchored to one lengthwise end of a heat-sensitive plate, one end of a metal support is anchored to the other end of said heat-sensitive plate, and the heat-sensitive plate is then drawn. The heat-sensitive-plate assembly has a dish-shaped drawn section near the middle of the heat-sensitive plate and has folded sections between the area where the movable contact is anchored and the widthwise edges of the heat-sensitive plate and also between the area where the metal support is anchored and the widthwise edges of the heat-sensitive plate.
Claims15
A thermally actuated switch, comprising:
- a sealed container made of metal;
- a thermally actuated plate defining a longitudinal direction between a first position and a second position and a widthwise direction between widthwise sides;
- a fixed contact accommodated in the sealed container;
- a movable contact anchored to a first end of the thermally actuated plate at the first position;
- and
- a metal support anchored at a first end to a second end of the thermally actuated plate at the second position,
- wherein the thermally actuated plate is drawn into dish-shaped drawn section in a vicinity of a central portion,
- wherein the movable contact and the fixed contact form an open/close contact,
- wherein a second end of the metal support is fixed to an inner surface of the sealed container to form a cantilever,
- wherein the thermally actuated plate has a first folded section extending between the widthwise sides with the movable contact covering a portion of the first folded section, and
- wherein the thermally actuated plate has a second folded section extending between the widthwise sides with an adjoining plate covering a portion of the second folded section.
Dependencies are inferred from the claim text.