| 摘要 |
An electromechanical warning horn system comprising a hollow body (2) having a cylindrical wall (8) closed by a bottom wall (9) and a flanged edge (12), at least a bobbin (3) abutting on said bottom wall (9); an elastic membrane (6), provided with at least a mobile core (7) fixed to said flanged edge (12), at least a contact breaker (4) constituted by a support (22) and a spring (23) provided with electric contacts (27, 28), and an insulating plate (5) sandwiched between said support (22) and said spring (23), and provided with at least a layer (31, 32) of resistive silk-screen ink.
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