公开(公告)号：EP1855303A1

公开(公告)日：2007-11-14

申请号：EP07251844.2

申请日：2007-05-02

申请人： Sensata Technologies, Inc.

发明人： Pisuk, Michelle ,  Leary, Brian ,  Subramanyam, Savithri ,  Crowe, Keith E. ,  Masurkar, Sameer

IPC分类号： H01H81/02 ,  H01H37/20

CPC分类号： H01H81/02 ,  H01H37/20 ,  H01H37/5418 ,  H01H2011/0075

摘要： A motor protector (10) is shown having an elongated generally cup-shaped metallic housing (12) formed by a top wall (12a) and side wall (12b) extending down from the perimeter of the top wall, the free end of which is welded to a header (14). The side and top wall have a rounded junction (12c) and a calibration rill (12e) is formed in the top wall from one end of the housing and through the rounded junction. The calibration rill is formed with a rigid flat bottom wall (12m) and extends to a calibration ridge (12h) intermediate to the two elongated ends of the housing. An elongated thermostatic disc (16) has a ring shaped dished area (16a) deformed in the central portion of the disc. A first end of the disc is mounted on the inside surface of flat bottom wall (12m) with the calibration ridge (12h) aligned with the deformed area of the disc. A movable electrical contact (20) is mounted on the other end of the disc movable into and out of engagement with a stationary electrical contact (34) that is in turn mounted on a heater (26). The heater is attached at one end (26a) to a terminal pin (28) at a first segment (26c), is stepped down at a second segment (26d) away from the disc and has a third segment (26e) on which the heater is mounted. A ceramic insulator plate (32) is interposed between the heater and the header.

摘要翻译： 电动机保护器（10）被示出具有由顶壁（12a）和从顶壁的周边向下延伸的侧壁（12b）形成的细长的大致杯状金属壳体（12），其自由端 焊接到集管（14）。 侧壁和顶壁具有圆形的接合部分（12c），并且在顶壁上形成校准滚珠（12e），该顶壁从壳体的一端穿过圆形连接处。 校准轨道形成有刚性平坦底壁（12m），并且延伸到在壳体的两个细长端部之间的校准脊（12h）。 细长的恒温盘（16）具有在盘的中心部分变形的环形碟形区域（16a）。 盘的第一端安装在平底壁（12m）的内表面上，校准脊（12h）与盘的变形区域对齐。 可移动的电触点（20）安装在盘的另一端上，该固定电触点（34）又可安装在加热器（26）上。 加热器在第一段（26c）处的一端（26a）附接到端子销（28），在离开盘的第二段（26d）处下降，并具有第三段（26e），在第三段 加热器已安装。 陶瓷绝缘板（32）插入在加热器和集管之间。