| 摘要 |
<p>A novel solenoid assembly (10) is shown to include a solenoid (14) having an armature (20) and a delay member (40). The delay member (40) delays movement of the armature (20) from a first position to a second position until some desired condition occurs, for example, until a desired period of time has passed, until the solenoid (14) is capable of generating a desired amount of force or until the current applied to the solenoid (14) reaches a desired level. In a preferred embodiment, the delay member (40) is a spring (34) positioned to bias the armature (20) against movement until the desired condition has occurred. In such an embodiment, the spring (34) may be positioned to exert force against a shoulder formed on the armature (20). It is also preferred for the solenoid assembly (10) to include a spacer (24), positioned between the solenoid (14) and the mechanism being controlled by the solenoid (14). The spacer (24) serves to space the armature (20) from the mechanism when the armature (20) is in the first position. In a further embodiment, the solenoid assembly (10) further includes an extension member (26) attached to the arm (22).</p> |
