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公开(公告)号：EP0642146A3
公开(公告)日：1995-11-15
申请号：EP94306490.7
申请日：1994-09-02
发明人： Charboneau, Thomas J. , Calenda, Ciro , Cobb, Carleton M., III , Brouwers, Arnoldus M. , Novi-Chavarria, Roberto , Armenio, Eduardo , Mazzola, Massimo , Morin, Daniel , Abrahamson, Karl R.
CPC分类号： H01H35/247 , H01H35/34
摘要： Pressure switch is shown which is accommodated in a pressure vessel (1) filled with a gas at a first pressure (P1), such as for a safety air bag in a road vehicle. The device comprises a pressure container (12) filled with a gas at a second pressure (P2), which container has at one side a flexible diaphragm (18) which reacts to the difference in the two pressures and interacts with an electrical circuit. The container is fitted with one side adjacent to and opposite a wall portion (14, 106, 214, 238, 256) of the pressure vessel and a magnetic element (16, 26, 240, 246/248) is operatively coupled to the diaphragm. The wall portion of the pressure vessel is made of non-magnetic material, and near the other side of the wall portion a magnetic field sensitive switching element (40) is mounted opposite the diaphragm magnetic element. A window element (13) of magnetic material may be placed in the wall portion of non-magnetic material, in line with the magnetic element and the switching element. An armature (232, 254) extending through the wall portion may be used to concentrate the magnetic flux path. The armature can be arranged to function in a head-on mode (232) or on a slide by mode (254). The magnetic curve of the system can be adjusted by using a bias magnet (216). A two part assembly permits attachment of the switch to the vessel without problems associated with the heat of welding from adversely affecting associated electronics and a circuit (222) is shown for providing a two wire output having voltage levels indicative of selected conditions.
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公开(公告)号：EP0642146A2
公开(公告)日：1995-03-08
申请号：EP94306490.7
申请日：1994-09-02
发明人： Charboneau, Thomas J. , Calenda, Ciro , Cobb, Carleton M., III , Brouwers, Arnoldus M. , Novi-Chavarria, Roberto , Armenio, Eduardo , Mazzola, Massimo , Morin, Daniel , Abrahamson, Karl R.
CPC分类号： H01H35/247 , H01H35/34
摘要： Pressure switch is shown which is accommodated in a pressure vessel (1) filled with a gas at a first pressure (P1), such as for a safety air bag in a road vehicle. The device comprises a pressure container (12) filled with a gas at a second pressure (P2), which container has at one side a flexible diaphragm (18) which reacts to the difference in the two pressures and interacts with an electrical circuit. The container is fitted with one side adjacent to and opposite a wall portion (14, 106, 214, 238, 256) of the pressure vessel and a magnetic element (16, 26, 240, 246/248) is operatively coupled to the diaphragm. The wall portion of the pressure vessel is made of non-magnetic material, and near the other side of the wall portion a magnetic field sensitive switching element (40) is mounted opposite the diaphragm magnetic element. A window element (13) of magnetic material may be placed in the wall portion of non-magnetic material, in line with the magnetic element and the switching element. An armature (232, 254) extending through the wall portion may be used to concentrate the magnetic flux path. The armature can be arranged to function in a head-on mode (232) or on a slide by mode (254). The magnetic curve of the system can be adjusted by using a bias magnet (216). A two part assembly permits attachment of the switch to the vessel without problems associated with the heat of welding from adversely affecting associated electronics and a circuit (222) is shown for providing a two wire output having voltage levels indicative of selected conditions.
摘要翻译： 示出了压力开关，其被容纳在充满第一压力（P1）的气体的压力容器（1）中，例如用于公路车辆中的安全气囊。 该装置包括填充有处于第二压力（P2）的气体的压力容器（12），该容器在一侧具有柔性隔膜（18），该隔膜对两个压力的差异起反应并与电路相互作用。 该容器的一侧与压力容器的壁部分（14,106,214,238,256）相邻并与之相对，并且磁性元件（16,26,240,246/248）可操作地连接到隔膜 。 压力容器的壁部分由非磁性材料制成，并且在壁部分的另一侧附近，磁场敏感开关元件（40）与隔膜磁性元件相对地安装。 磁性材料的窗元件（13）可以放置在与磁性元件和开关元件对齐的非磁性材料的壁部分中。 延伸穿过壁部分的电枢（232,254）可用于集中磁通量路径。 衔铁可以布置成在迎头模式（232）或模式（254）下的滑块中起作用。 系统的磁性曲线可以通过使用偏置磁体（216）进行调整。 两部分组件允许将开关附接到容器而没有与焊接热有关的问题对相关电子元件产生不利影响，并且示出了用于提供具有指示选定状态的电压电平的双线输出的电路（222）。
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