Abstract: A finger guard member includes: a first surface disposed between one end of a roller and a belt wound around the one end; a second surface in which a notch having a width larger than a shaft diameter of a fixed shaft of the roller is formed with respect to the fixed shaft positioned outside the one end in a longitudinal direction of the roller; and a positioning part disposed inside the notch. When the fixed shaft has a first shaft diameter, the finger guard member is positioned by the positioning part being supported by a peripheral surface of the fixed shaft. When the fixed shaft has a second shaft diameter greater than the first shaft diameter, the finger guard member is positioned by an edge of the notch being supported by the peripheral surface of the fixed shaft with the positioning part being not present on the second surface.

Abstract: A finger guard member includes: a first surface disposed between one end of a roller and a belt wound around the one end; a second surface in which a notch having a width larger than a shaft diameter of a fixed shaft of the roller is formed with respect to the fixed shaft positioned outside the one end in a longitudinal direction of the roller; and a positioning part disposed inside the notch. When the fixed shaft has a first shaft diameter, the finger guard member is positioned by the positioning part being supported by a peripheral surface of the fixed shaft. When the fixed shaft has a second shaft diameter greater than the first shaft diameter, the finger guard member is positioned by an edge of the notch being supported by the peripheral surface of the fixed shaft with the positioning part being not present on the second surface.

Abstract: A motorized conveyor roller prevents slip between a power transmission mechanism in a roller tube and the roller tube due to aging. The power transmission mechanism includes a first closed-bottom cylindrical member fit over a second closed-bottom cylindrical member and a bolt for axially pressing the members against one another. The first member receives torque from a motor and a double-sided tape is laid on an outer surface of the first member. Facing surfaces of the first and second members are tapered, and the circumferential wall with the double-sided tape is expandable diametrically. The bolt diametrically expands the circumferential wall pressed by the tapered surface. Thus, an adhesive force of the double-sided tape sandwiched between the circumferential wall and the roller tube is exerted to adhere the outer surface of the first member to an inner surface of a roller tube.

Abstract: A motorized conveyor roller prevents slip between a power transmission mechanism in a roller tube and the roller tube due to aging. The power transmission mechanism includes a first closed-bottom cylindrical member fit over a second closed-bottom cylindrical member and a bolt for axially pressing the members against one another. The first member receives torque from a motor and a double-sided tape is laid on an outer surface of the first member. Facing surfaces of the first and second members are tapered, and the circumferential wall with the double-sided tape is expandable diametrically. The bolt diametrically expands the circumferential wall pressed by the tapered surface. Thus, an adhesive force of the double-sided tape sandwiched between the circumferential wall and the roller tube is exerted to adhere the outer surface of the first member to an inner surface of a roller tube.

Abstract: A communication master unit of a conveyance controller and communication slave units for a main conveyor, loading conveyors and unloading conveyors are connected by a serial transmission line to transmit and receive different kinds of data signals to and from motorized rollers for conveying items and their corresponding sensors by the packet-switching exchange system. Conveyance control can be executed by transmitting and receiving the different kinds of data signals via reduced number of wirings while connecting the master unit and the slave units corresponding to the respective conveyors by the serial transmission line in a conveyor system.