| 摘要 |
An alarm for indicating when a fish strikes bait at the end of a line associated with a fishing rod. The alarm includes a plastic housing defining a receptacle with a rim and opening through which the fishing rod is received and a separate compartment where a sound generating unit is stored. A movable receptacle part is integrally hinged to the housing and in a rest position defines a part of the rim against which the rod is rested. The receptacle part is deflected outwardly to a strike position when the fish takes bait, but is otherwise restored to the rest position by the resilience of the plastic forming the hinge. The sound generating unit is mounted on a plastic carrier which has a pair of prominent terminals connected to a speaker drive circuit. A pair of conductive clip elements within the compartment serve both to retain the carrier is a releasable snap fit and to electrically contact the circuit through the carrier terminals. A movable contact attached to the displaceable receptacle part and a stationary contact mounted on the housing are attached to the clip elements. The movable contact is separated by an air gap from the stationary contact when the displaceable receptacle part is in the rest position, but contacts the stationary contact when the receptacle part is deflected to thestrike position, thereby closing the circuit and generating an audible alarm system. |
