| 摘要 |
PURPOSE: To provide an acceleration sensor which is highly versatile as an impact sensor to start a vehicle safety restraint system, compact in size, firm in structure, and capable of being manufactured at a relatively low cost, and the vehicle safety restraint system in which the acceleration sensor is employed. CONSTITUTION: Permanent magnets 24, 28 are resiliently urged toward a first position adjacent to one end of a cavity 22, and the acceleration applied to the permanent magnets urge the permanent magnets to a second position against the force to be resiliently applied to the permanent magnets. An electric switch contact piece is extended inward of the cavity and engaged with a surface of the magnets. The surface of the magnets comprises a first surface portion 42 of a conductive structure and a second non-conductive surface portion 44 adjacent to each end. The conductive and non-conductive portions are separate from each other, and a switch contact is engaged with one of these surface portions at the first position, and engaged with the other at the second position. |
