Bell Device with Dual Tones for Transport Vehicles

摘要

A bell device with dual tones for transport vehicles includes a main body, a base, and a trigger. The main body includes two tapering chambers therein and a pinhole located between the chambers. A constant whistling sound is generated for warning approaching cars and pedestrians when wind introduced into one of the two chambers passes through the pinhole. The base is adapted to be fixed on a handlebar and supports the main body, so that the main body is rotatable relative to the base. The trigger includes a flexible operating member which has at least a knocking portion used to beat the main body and induce a warning sound when the operating member is manipulated.

主权项

1. A bell device, comprising:
a main body including a peripheral wall and two resonance chambers formed inside the peripheral wall and being in communication with each other, with each of the two chambers including an external opening in the peripheral wall, an internal opening in an inner end thereof, and a cavity tapered from the external opening to the internal opening, with a pinhole defined between the two chambers, with a support member provided on a bottom of the main body; a base adapted to be mounted on a handlebar and engaged with the support member, with the main body rotatable relative to the base; and a trigger including an operating member installed between the main body and the base, with the operating member including at least one knocking portion, wherein a constant whistling sound is generated when wind introduced into one of the two chambers passes through the pinhole, and wherein the knocking portion beats the main body and induces a warning sound when the operating member is manipulated.