| 摘要 |
<p>An improved preload system for an accelerometer (10, 110, 210) in which an acceleration sensitive structure (14, 114, 214) is clamped between first (12, 112, 212) and second (16, 116, 216) clamping members. The acceleration sensitive structure includes a paddle (42, 142, 242) supported such that the paddle has a degree of freedom along a sensing axis (SA). The accelerometer further includes a case (20, 120, 220) within which the acceleration sensitive structure and clamping members are mounted. The preload system comprises an internal mounting surface (36, 136, 236) in the case that faces in a first direction along the sensing axis, and that contacts the second clamping member and prevents it from moving in a second direction opposite to the first direction. The preload system also includes a spring (20, 80, 82, 128, 228) extending between the first clamping member and the case, such that the spring exerts a force on the first clamping member in the second direction. A positioning ring (26, 126, 226) may also be provided between the first clamping member and the spring, to laterally locate the first clamping member within the case.</p> |
