| 摘要 |
A sectional door (S) with a cut out entrance door (P), the entrance door being formed by a number of superimposed panels (P) mutually hinged, wherein each entrance door panel (P) is hinged to a corresponding section of the sectional door (S), and wherein a first entrance door panel (P1) is provided with a lock (L) intended to block the entrance door (P) with respect to the sectional door (S), wherein the lock (L) is operatively connected with vertical shaft segments (6) suitable for being displaced between an opening position and a closing position, which shaft segments (6) end at their end portions in correspondence of the hinge axes of the first panel (P1), and for the other panels of the entrance door (P) there are provided vertical shaft segments (6) coaxial with said shaft segments (6) of the first panel (P1) and connected to means (B) for blocking with respect to the sectional door (S), the shaft segments (6) of all the panels (P) forming a composite shaft (6) interrupted in correspondence with the hinges among the panels (P), through which shaft the lock is able to operate the blocking means (B) of all the entrance door panels. This composite shaft (6), being interrupted in correspondence of the hinges among the panels (P), does not hinder the displacements of the panels, that are needed for following the curved trajectory of the sectional door (S). |
