| 摘要 |
Improvements in low tension electronic devices, indistinctively useful in switches, pulsators and interrupters. The invention is characterised in that it includes elements (2) for building a three-way switch, wherein contact-balance beam (11) or (11a) is actuated by a toggle key (7) that simultaneously includes hollow vertical cylinders (9) housing cylindrical helical springs (10) ending in hollow cylindrical lugs (10) that are directly supported on the upper surface of the corresponding contact-balance beam (11) or (11a), the lugs sliding between protruding flanges (13) located at the central portion of each upper surface and being useful for removing contact metallic plates (21) and (16) from the balance beams (11) and (11a) and contact metallic plates (20) and (15) from fix contacts (14). The invention comprises contacts (4) and side portions (5) over which balance beam (11) and (11a) are located, as well as a three-way contact (14) having a double square wherein the upper flange (14a) thereof includes a contact metallic plate (15) at the lower portion thereof, wherein its balance is affected by a contact metallic plate (16) of the corresponding balance beam (11a); while the lower horizontal flange (14b) of the three-way contact includes an aperture (17) that is engaged over an upper protrusion (18) of the side contact (5), the upper protrusion simultaneously including small outer flanges (19) inwardly folded so as to fasten the contact (14) which is located at pressure in the inner portion of a body (1) housing (22) favoured by the elasticity of the material.
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