Self-adjusting cylinder monitor assembly

摘要

A lock cylinder monitoring assembly for monitoring position of a lock cylinder. The monitoring assembly includes a housing having an inner cavity and an exterior diameter. The exterior diameter of the housing is not significantly greater than the corresponding cylinder diameter. The assembly further includes a switch received into the inner cavity of the housing. The switch is in electrical communication with an indicator. The switch is reactive to any change in position of the lock cylinder.

主权项

1. A cylinder lock monitor for monitoring a position of a cylinder lock including a rotatable element having an axis of rotation, the cylinder lock monitor comprising:
a cylinder lock monitor housing adapted to be positioned proximate to the rotating element of the cylinder lock, the cylinder lock monitor housing having an inner end and defining an inner cavity opening through the inner end of the housing; a plunger having an inner end and disposed in the cavity of the housing, the plunger configured for non-rotating axial movement relative to the housing along the axis of rotation of the rotatable element between a first position where the inner end of the plunger extends from the opening in the inner end of the housing and a second position where the inner end of the plunger is contiguous with the inner end of the housing; a spring disposed in the cavity of the housing for biasing the plunger toward the first position; and a switch operatively associated with the housing, the switch in electrical communication with an indicator and adapted to be reactive to any change in position of the rotatable element of the cylinder lock,wherein the inner end of the plunger is adapted to contact the rotatable element between and including the first and second positions of the plunger during rotation of the rotatable element relative to the plunger.