There exists a small play in the contact surfaces of these elements that can cause failures in ignition or can result in current derivations through another run somewhat longer. This run is short and the electric current used to generate the spark passes from the plexor limiting piece or the lower seating of the piezoelectric element to the external telescopic assembly linch pins. This is different than other previous mechanisms in which the electric current also passes through the springs that aid the plexor and the telescopic set. Shortening of the run is obtained for the electric current, since it only circulates through the anvil, piezoelectric element, the plexor limiting piece and the external telescopic assembly. ![]() These lugs operate in the interior of the same slots provided in the internal telescopic assembly for axial displacement of the plexor, such that these slots need to have a greater length than is necessary only for the guidance of the plexor. In this patent, it is possible to do without the angular displacement relative to both telescopic components, by anticipating in the external assembly a pair of lugs that perform with the function of a linch pin. Spanish patent P-8902741 discloses a piezoelectric mechanism for gas lighters in which the aforementioned problems referred to were resolved, or at least were favorably reduced, both in the economic aspect and in the functional and structural ones. ![]() The closing cap (15) is axially displaceable with respect to the assembly (2), with the windows (17) therein having a greater length for connection of the cap, and being provided with teeth (11). ![]() Another spring (14), for aiding the plexor (6), is totally guided in the interior of the telescopic assembly (1) and remains, in turn, included in the circular void of the closing cap (15) of the external telescopic assembly (2). The spring (20) is external and is axially distant from the piezoelectric element (3). The other flank contacts one of the external faces of the other telescopic assembly. One flank of this angular piece has a central slot forming two lugs (24), which enter respective parallel notches (23) of the internal telescopic assembly (1) when crossing its wall. The external telescopic assembly (2) is prevented from rotation relative to the internal one (1) by an angular piece (22) having orthogonal flanks. The interior assembly (1) includes a piezoelectric element (3) which is immobilized between an anvil (4) and a limiting piece (5) over which a plexor (6) hits to generate the lighting spark. This mechanism of the invention has two telescopic assemblies (1, 2) aided by a spring (20) for maintaining a maximum extension position between the assemblies.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |