公开(公告)号：US5198629A

公开(公告)日：1993-03-30

申请号：US892675

申请日：1992-06-04

申请人： Chikahisa Hayashi ,  Yoshio Sano ,  Junichi Mizutani ,  Takanori Kantou ,  Hiroaki Shinto ,  Sumio Sakaguchi

发明人： Chikahisa Hayashi ,  Yoshio Sano ,  Junichi Mizutani ,  Takanori Kantou ,  Hiroaki Shinto ,  Sumio Sakaguchi

IPC分类号： B62D1/04 ,  B60Q5/00 ,  B60R16/00 ,  B60R21/20 ,  B60R21/203 ,  B60R21/215 ,  H01H13/14 ,  H01H13/52 ,  H01H13/702 ,  H01H13/703 ,  H01H13/807

CPC分类号： H01H13/702 ,  B60Q5/003 ,  B60R16/005 ,  B60R21/21658 ,  H01H13/807 ,  H01H13/703 ,  H01H2211/022 ,  H01H2225/002 ,  H01H2231/026

摘要： A horn switch for a steering wheel having an air bag device. The steering wheel includes a multilayer membrane switch as the horn switch in which spacers in one layer are not aligned with the spacers in the other layers. Accordingly, even when the membrane switch is depressed just over one of the spacers in one layer, the electrode plates in the other layers can make contact with each other. Thus the operable area of the membrane switch is enlarged. Further, the membrane switch is supported on its lower surface by a number of ribs which define a number of spaces between the pad lower surface and air bag device. As a result of this space, the operation on the membrane switch can be made resilient in spite of the provision of the air bag device directly under the steering wheel pad. Further, because each part of the pad separated by the air bag device upon impact, each part must be provided with a membrane switch. For this reason, a wiring structure for the two membrane switches is provided such that the manufacture of the pad and the assembly of the steering wheel is more easily facilitated.

摘要翻译： 用于具有气囊装置的方向盘的喇叭开关。 方向盘包括作为喇叭开关的多层膜开关，其中一层中的间隔物不与其它层中的间隔物对准。 因此，即使当膜层开关在一层中的一个间隔物上被压下时，其他层中的电极板也可以彼此接触。 因此，膜开关的可操作区域被扩大。 此外，膜开关在其下表面上被多个肋支撑，这些肋在垫下表面和气囊装置之间限定了许多间隔。 作为这种空间的结果，尽管将气囊装置直接设置在方向盘垫下方，膜开关上的操作可以变得有弹性。 此外，由于垫片在撞击时由气囊装置分隔开，所以每个部分必须设置有薄膜开关。 为此，提供了两个薄膜开关的布线结构，从而更容易地促进了垫的制造和方向盘的组装。