公开(公告)号：US09831056B2

公开(公告)日：2017-11-28

申请号：US14353263

申请日：2012-10-19

申请人： LITTELFUSE JAPAN G.K.

发明人： Hirofumi Mochizuki ,  Katsuaki Suzuki ,  Arata Tanaka

IPC分类号： H01H83/20 ,  H01H37/54 ,  H01H37/04 ,  H01H69/02 ,  H01C7/02 ,  H01H71/02 ,  H01H1/26

CPC分类号： H01H83/20 ,  H01C7/02 ,  H01C7/027 ,  H01H1/26 ,  H01H37/043 ,  H01H37/54 ,  H01H37/5436 ,  H01H69/02 ,  H01H71/025 ,  H01H2071/0242 ,  Y10T29/49105

摘要： A protection device comprises a resin base, PTC component, bimetal component, arm and upper plate which are housed in a resin housing wherein the base includes a terminal integrated with the base by insert molding. A resin cover is formed by insert molding to cover the PTC component, bimetal component, arm and upper plate which are superposed in this order over the terminal within a space in the base. The space in the resin base is substantially closed by the upper plate, the base and the cover are integrally bonded to define the resin housing, the terminal and the arm are electrically connected in series in a normal state, and in an abnormal state where the bimetal component is activated, the terminal and the arm are electrically cut off, while the terminal, PTC component, bimetal component, and arm are electrically connected in series in this order.

公开(公告)号：US20170076900A1

公开(公告)日：2017-03-16

申请号：US15124051

申请日：2015-03-04

申请人： c/o Littelfuse Japan G.K.

发明人： Masaaki IWAI ,  Takayuki YOKOTA

IPC分类号： H01H85/02 ,  H01H85/36 ,  H02H5/04 ,  H01H37/34

CPC分类号： H01H85/0241 ,  H01H37/34 ,  H01H37/761 ,  H01H85/36 ,  H01H2235/01 ,  H02H5/048 ,  H02H9/026

摘要： The present invention proposes a protection device which has a large rated voltage and a large rated current, which is capable of sufficiently suppressing arc generation during activation, and which is also capable of providing suitable protection against overcurrent due to short circuiting or the like of a main circuit. The protection device of the present invention includes (i) a protection element which includes a first thermal fuse and a resistor, and in which the resistor generates heat as a result of current passing through the resistor when there are abnormalities, and the first thermal fuse is activated due to this heat and interrupts the current, (ii) a PTC element and a second thermal fuse which are electrically connected in parallel to the first thermal fuse and which are electrically connected in series to each other, and (iii) a current fuse which is electrically connected in series to the first thermal fuse.

摘要翻译： 本发明提出一种具有大额定电压和大额定电流的保护装置，该保护装置能够充分地抑制激活期间的电弧产生，并且还能够提供适当的防止由于短路等引起的过电流 主电路 本发明的保护装置包括（i）保护元件，其包括第一热熔丝和电阻器，并且当存在异常时，电阻器通过电阻器产生热量，并且第一热熔丝 由于这种热而被激活并中断电流，（ii）PTC元件和第二热熔丝，它们彼此并联地电连接到第一热熔丝，并且彼此串联电连接;以及（iii）电流 与第一热熔断器串联电连接的熔断器。