Patent ID: 7857033
Filing Date: 2010-12-28
Classification: E06B,Y10T

Abstract:
1. End-of-travel device ( 10 ) for rotational actuating systems of roller blinds or sun shades, mounted on a frame of the actuating system and coupled to an actuating motor of the roller blind, comprising a displaceable member ( 22 ; 22 a ; 22 b ) which is axially displaceable to an adjustable end-of-travel position ( 26 ), an axial coupling means ( 20 ) in engagement with said displaceable member ( 22 ; 22 a ; 22 b ) and rotationally actuated about its axis, so that the rotation of said motor and said coupling means causes said axial displacement of said displaceable member ( 22 ; 22 a ; 22 b ), lever means ( 40 ) for converting the axial displacement of said displaceable member ( 22 ; 22 a ; 22 b ) into an action on an end-of-travel switch ( 60 ) for operating said motor, said lever means ( 40 ) comprising a movable member ( 50 ; 50 a ; 50 b ) pivotably mounted on the frame and engageable by pressure from said displaceable member ( 22 ; 22 a ; 22 b ) when it reaches said end-of travel position ( 26 ), the other end of said movable member ( 50 ; 50 a ; 50 b ) being engageable with an actuating member ( 58 ; 58 a ; 58 b ) of said end-of-travel switch ( 60 ; 60 a ; 60 b ), characterized in that said end of travel switch is positioned co-axially with said axial coupling means, and said actuating member ( 58 ; 58 a ; 58 b ) of said switch ( 60 ; 60 a ; 60 b ) is radially actuated with respect to the axis of displacement of said displaceable member ( 22 ; 22 a ; 22 b ), so that when said displaceable member ( 22 ; 22 a ; 22 b ) reaches said end-of-travel position, said displaceable member pushes and applies said pressure to said movable member ( 50 ; 50 a ; 50 b ), and said movable member ( 50 ; 50 a ; 50 b ) rotates about a pivoting point on the frame, consequently activating said end-of-travel switch, and said lever means ( 40 ) forms a lever of the third order.