Abstract: A shock-absorbing device for passenger conveyors comprises shock-absorbing members, which are attached respectively to at least one side of each of an inner rail and an outer rail of a track and protrude from the inner and outer rails toward a step roller. Supporting members are attached to the shock absorbing members for supporting the shock-absorbing members together with the inner rail and the outer rail.

Abstract: A passenger conveyor provided with a drive motor, a drive sprocket coupled to a shaft of the drive motor, a drive terminal gear coaxially engaged to the drive sprocket, a step chain driven by meshing with the drive terminal gear, a step connected to the step chain and having front and rear wheel rollers, and an upper rail for guiding the front wheel roller so that the step chain meshes smoothly with the drive terminal gear, wherein the upper rail comprising a straight section formed in a straight; an arched section formed extendly from an end of the straight section, wherein the starting end of the arched section coincides with or goes beyond a perpendicular center: line of the terminal gear; a distance from an upper surface of the straight section to a circumferencial surface of the terminal gear is shorter than a radius of the front wheel roller.

Abstract: A chain tension control apparatus for preventing a chain chattering in a power transmission system including main and subordinate sprockets and a chain connecting the main and subordinates sprockets. The apparatus maintains a chain tension by sensing a chain release and accordingly driving an electromagnet in accordance with a compensation signal that responds to chain release factors, and the chain tension in the apparatus is maintained by disposing a permanent magnet adjacent to the chain, thereby preventing chain vibration and noise from occurring.

Abstract: In a sprocket buffer, in order to reduce a noise and a shake/vibration of the chain gearing mechanism, an elastic band is provided to be adhered in a bottom of the sprockets; a cylindric pin which is to be inserted into the coupling hole in the bottom of the sprockets is formed in a lower part of the elastic band, and a pressure portion having the same diameter as that of the coupling hole is formed integrally with the cylindrical pin at a lower portion of the outer peripheral surface of the pin, thereby improving a durability against a cut off of the pin head portion.

Abstract: A terminal rail system for an escalator includes an escalator step including a step front roller and a step rear roller, an upper guide rail for guiding the step front roller, a lower guide rail for guiding the step rear roller, a semicircular inner casing and outer casing, the inner casing being engaged to the lower guide rail, at a curved portion of the lower guide rail the escalator step changing a proceeding level, and at least one end portion of each of the inner casing and outer casing being separated from a corresponding one thereof for thereby reducing an impact caused by the step rear roller. The terminal rail system flexibly buffers the respective impacts caused by the step rear roller for thereby considerably relieving the vibration and noise.

Abstract: A terminal rail for a passenger conveyor including an inner and outer guide rails is disclosed. According to the terminal rail, a portion on which the rear wheel roller is initially contacted with the outer guide rail includes a damper placed between an end of a straight portion of the outer guide rail and a desired position of a turning portion to damp impact produced when the rear wheel roller of the step travels from the inner guide rail to the outer guide rail of the terminal rail.

Abstract: A step combining system of an escalator which includes a step for transferring passengers, an attaching/detaching unit, fixedly provided under each end of the step, forming a C-shaped attaching/detaching groove thereon, and a connecting shaft having an attaching/detaching bar at each end thereof, of which a diameter is smaller than that of an entrance of the groove in order to easily be attached/detached to/from the attaching/detaching groove.

Abstract: The terminal rail system for an escalator includes a pair of terminal rails including a corresponding pair of curved portions thereof having identical curvatures therebetween, a curve start point of either of the terminal rails being displaced from that of the other of the terminal rails, in a pair of terminal rails for an escalator which include a pair of curved portions thereof for guiding therearound a pair of step rear rollers engaged to an escalator step, and a pair of linear portions for guiding therealong the pair of step rear rollers toward the curved portions. The system completely eliminates the noise and vibration caused by an impact of the step rear rollers on the upper casing of the terminal rail.

Abstract: A terminal rail system for an escalator includes an escalator step having a step front roller and a step rear roller, an upper guide rail for guiding the step front roller, a lower guide rail for guiding the step rear roller, a semicircular inner casing and outer casing that are connected to each other by a side plate and engaged to a curved portion of the lower guide rail for guiding the step rear roller through a channel formed between the casings, a buffer attached to the semicircular outer casing to reduce an impact caused by the proceeding step rear roller. The terminal rail system decreases an impact resulting from the step rear roller, thereby decreasing pulsation or vibration of the step and obtaining an extended longevity of the step rear roller and the terminal rail.