公开(公告)号：US5612662A

公开(公告)日：1997-03-18

申请号：US384821

申请日：1995-02-07

申请人： Karl G. Drekmeier ,  Gerhard Winter

发明人： Karl G. Drekmeier ,  Gerhard Winter

IPC分类号： H01H37/76 ,  H01H37/46 ,  H01H37/60 ,  H01H69/02

CPC分类号： H01H37/761 ,  H01H2037/046 ,  H01H2037/763 ,  Y10T29/49107

摘要： A thermal fuse includes a leaf spring formed of a narrow sheet metal strip. The leaf spring has ends and at least two contact points at the ends. At least one of the contact points is a soldering point for connection with corresponding circuit contacts of a circuit substrate. The leaf spring has at least one spring arm interconnecting the contact points. The spring arm has a roof-shaped deformation in the vicinity of one contact point. The spring arm has a flat and elongated spring segment with a transition adjoining the deformation and a transition extending to the other contact point. The spring segment is bending resistant in the vicinities of the transitions, for transforming a compressive deformation applied to the roof-shaped deformation into a lateral movement and into an arching of the spring segment, with both ends of the leaf spring attached to the circuit substrate without pretensioning. A method for activation of the thermal fuse includes placing the contact points of the leaf springs free of tension on the circuit contacts, soldering the contact points to the circuit contacts, and compressively deforming the roof-shaped deformation after the soldering for creating an arching of the spring segment and a desired pretensioning.

摘要翻译： 热熔丝包括由窄金属片条形成的板簧。 板簧在端部具有端部和至少两个接触点。 接触点中的至少一个是用于与电路基板的相应电路触点连接的焊接点。 板簧具有互连接触点的至少一个弹簧臂。 弹簧臂在一个接触点附近具有屋顶形变形。 弹簧臂具有平坦且细长的弹簧段，其具有与变形相邻的过渡以及延伸到另一个接触点的过渡。 弹簧段在过渡附近是抗弯曲的，用于将应用于屋顶形变形的压缩变形转变为横向运动并进入弹簧段的拱形，其中板簧的两端附接到电路基板 没有预张力。 用于激活热熔丝的方法包括将板簧的接触点放置在电路触点上，将接触点焊接到电路触点上，并且在焊接之后对屋顶形变形进行压缩变形，以产生拱形 弹簧段和所需的预张紧。