Patent ID: 6304178
Filing Date: 2001-10-16
Classification: E05F,E05Y,G01V

Abstract:
A door safety system comprising:a translucent-type non-contact proximity switch, provided at moving doors used for an automatic door system, for detecting a person or obstacle and for controlling a movement of the doors so as to prevent the person or the obstacle from colliding with the moving doors, so that the person or the obstacle can be detected with respect to a moving space of the moving doors;electric power supply cables for supplying at least one of electric power and signals to the moving doors; anda cable guide for guiding and holding the electric power supply cables by a flexible support member,wherein the support member is made of strip steel product, which is arc-shaped and curved in a transversal direction, wherein one end of the support member is fixed to the moving doors and the other end of the support member is fixed to an immovable portion, and wherein the at least one of electric power and signals are transmitted through the cable guide comprising parallel portions which are parallel to the fixed portion of the moving doors and the fixed portion of the immovable portion, and a curved portion substantially having a predetermined radius of curvature, where the arc-shaped convex portion constitutes an outer surface, wherein the radius of curvature of the arc-shaped portion of the support member with respect to the transversal direction is substantially equal to that of the curved portion of the support member.