Abstract:
Die Erfindung betrifft einen Überlastauslöser (1), insbesondere für einen Leistungsschalter mit einem Metallstreifen (2) aus mindestens zwei unterschiedlichen Metallarten, um welchen ein Heizleiter (3) gewickelt ist. Die Erfindung zeichnet sich dadurch aus, dass die mechanische und elektrische Anbindung des Metallstreifens (2) vollständig oder teilweise getrennt ausgeprägt ist, so dass bei vollständiger Ausprägung kein Strom über die mechanische Anbindung des Metallstreifens (2) fließt und bei teilweiser Ausprägung ein Teil des Stroms über die mechanische Anbindung fließt.
Abstract:
A thermal cut-off device (100) includes a plastic base (102), two electrodes (104, 114), a temperature sensing element (108), and a plastic cover (122) that fits over the base. The temperature sensing element is curved downward, and may be a bimetal or a trimetal. When the device is subject to an over-temperature condition, the orientation of the curve flips such that the temperature sensing element is then curved upward. When the temperature sensing element is curved upward, it lifts an arm of one of the electrodes, which severs the electrical connection between the electrodes. In this manner the device shuts off during an over-temperature condition in order to protect the circuit in which the device is installed. To prevent corrosion of the temperature sensing element, a first moisture insulation layer is applied to the outer surface of the thermal cut-off device. The moisture insulation layer may be an epoxy adhesive or a UV/visible light-cured adhesive or light/heat cured adhesive. In some embodiments, a second moisture insulation layer (138) is formed on the surface of the temperature sensing element.
Abstract:
A thermal deformation member (1) for electron tubes or current controllers composed of a multilayer body formed by stacking a high thermal expansion member (1) made of, for example, an Fe-Ni-Cr alloy, an intermediate member (4) made of one kind of metal selected from among Fe, Al, and Cu or an alloy containing some of the metals, and a low thermal expansion member (2) made of, for example, an Fe-Ni alloy. The coefficient of thermal expansion alpha 3 of the intermediate member (4) is greater than that alpha 2 of the low thermal expansion member (2) and smaller than that alpha , the high thermal expansion member 1 ( alpha 1> alpha 3> alpha 2). The intermediate member (4) reduces the manufacturing cost and improves the workability without deteriorating the strength and long-term reliability of the members. A color picture tube is manufactured using the above-mentioned thermal deformation member for electron tubes in the thermal deformation section of a frame holder one end of which is fixed to a panel and the other end of which is firmly stuck to the mask frame of a shadow mask. An overcurrent protector is manufactured using the above-mentioned thermal deformation member for current controllers in the thermal deformation section which opens a contact.