A roller system has a frame, a plurality of rollers (supported by the frame) forming a roller plane, and an external rotor motor (motor) spaced from the roller plane. As an external rotor motor, the motor has a stator and an external rotor radially outward of the stator to substantially circumscribe the stator. To kinetically couple the motor with the rollers, the system also has a transmission coupling coupled with the external rotor and at least one of the rollers. The transmission coupling and external rotor are configured so that rotation of the external rotor causes the at least one roller to rotate in response to a torque received through the transmission coupling.

A roller system has a frame, a plurality of rollers (supported by the frame) forming a roller plane, and an external rotor motor (motor) spaced from the roller plane. As an external rotor motor, the motor has a stator and an external rotor radially outward of the stator to substantially circumscribe the stator. To kinetically couple the motor with the rollers, the system also has a transmission coupling coupled with the external rotor and at least one of the rollers. The transmission coupling and external rotor are configured so that rotation of the external rotor causes the at least one roller to rotate in response to a torque received through the transmission coupling.

A motor comprising: (a) one or more motor stators including a plurality of motor windings; (b) a roller shaft connected to the one or more motor stators, the roller shaft extending along a longitudinal axis of the motor and being adapted to span between two frame members; and (c) a motor rotor including: (i) a roller tube including a key, a key recess, or both, and (ii) one or more ring magnets having: (1) a mating surface shaped to substantially mate to a mating surface of the roller tube and (2) a key recess that receives the key of the roller tube, that receives a separate key that extends into the key recess of one of the one or more ring magnets and the key recess, or both; wherein the one or more ring magnets are produced from a rare earth metal; and wherein the motor rotor carries a load of an article so that the article is moved by the motor rotor.

A motor comprising: (a) one or more motor stators including a plurality of motor windings; (b) a roller shaft connected to the one or more motor stators, the roller shaft extending along a longitudinal axis of the motor and being adapted to span between two frame members; and (c) a motor rotor including: (i) a roller tube including a key, a key recess, or both, and (ii) one or more ring magnets having: (1) a mating surface shaped to substantially mate to a mating surface of the roller tube and (2) a key recess that receives the key of the roller tube, that receives a separate key that extends into the key recess of one of the one or more ring magnets and the key recess, or both; wherein the one or more ring magnets are produced from a rare earth metal; and wherein the motor rotor carries a load of an article so that the article is moved by the motor rotor.

A drive system for a motorized roller that includes a secondary stator external to the motorized roller. The outer shell of the motorized roller contains electrically conductive or magnetic material to form an induction, permanent-magnet, or reluctance motor with the secondary stator and boosts or bucks the torque of the motorized roller.

A drive system for a motorized roller that includes a secondary stator external to the motorized roller. The outer shell of the motorized roller contains electrically conductive or magnetic material to form an induction, permanent-magnet, or reluctance motor with the secondary stator and boosts or bucks the torque of the motorized roller.

Provided are a motor unit and a conveyance device. In a motor unit having a motor portion and a gear portion, the motor portion is formed by accommodating a most part of a drive motor in a housing member. The gear portion is formed by arranging at least a part of a drive gear and a plurality of small gear portions in a space surrounded by an inner tooth train portion, and the plurality of small gear portions is positioned around the drive gear in the space. Each of the plurality of small gear portions meshes with one of the drive gear and the inner tooth train portion, and each of the plurality of small gear portions rotates by rotation of the drive gear. At least a part of the gear portion is at a position overlapping the motor portion in plan view.

A belt drive assembly for driving at least one tread roller of a belt-driven live roller conveyor and associated methods are provided that uses an electrically actuated assembly to raise and lower a belt into and out of engagement with tread rollers to selectively transport or accumulate product. The assembly includes a stationary frame having a magnet and a movable frame having an attractant plate, or vice versa. The magnet may be an electromagnet or a solenoid. The movable frame is movable with respect to the stationary frame, such that when an electric current is applied to the magnet, the magnet and the attractant plate are magnetically drawn to each other and cause the movable frame to move towards a respective portion of the stationary frame to place the belt drive assembly in a driving configuration in which at least one tread roller of the conveyor in engaged.

A transfer module assembly includes a frame, a conveyor belt with internal rotating elements, where the conveyor belt is supported by the frame, conveyor drive rollers supported by the frame and configured to drive the conveyor belt, a flat transfer belt mounted beneath the conveyor belt and configured to contact undersides of the internal rotating elements of the conveyor belt in operation, and flat transfer belt drive rollers supported by the frame and configured to drive the flat transfer belt. The conveyor drive rollers are friction-based and operate without use of a sprocket, and comprise depressions for receiving the internal rotating elements of the conveyor belt.

A standardized drive system for a roller conveyor assembly having a motor with an integrated motor drive unit with superior heat transfer characteristics. A motor driver annex is attached to the motor housing and provides a mounting method and a heat sink for cooling the DMOS that provides power to the motor phases. The system includes an easily accessible multi-mode conveyor control management system which provides design flexibility with minimal cost and additionally adds functional improvements for transportation modes. The motor is configured to be mounted on a metal bracket below the rollers and between the side frames of the conveyor assembly. The control system is exceptionally flexible, allowing the system to be configured to operate in many common conveying modes.