A motor includes a rotor and a stator. The rotor can rotate about a central axis extending in an axial direction. The stator includes a stator core having an annular shape surrounding the central axis. The rotor includes a cylindrical portion, a first plate portion, a second plate portion, and a hole. The cylindrical portion is arranged on a radially outer side with respect to the stator and extends in the axial direction. The first plate portion is arranged on a first axial side with respect to the stator, and expands radially inward from a first axial end of the cylindrical portion. The second plate portion is arranged on a second axial side with respect to the stator, and expands radially inward from a second axial end of the cylindrical portion. The hole penetrates at least one of the cylindrical portion, the first plate portion, and the second plate portion.

A motor includes a rotor and a stator. The rotor can rotate about a central axis extending in an axial direction. The stator includes a stator core having an annular shape surrounding the central axis. The rotor includes a cylindrical portion, a first plate portion, a second plate portion, and a hole. The cylindrical portion is arranged on a radially outer side with respect to the stator and extends in the axial direction. The first plate portion is arranged on a first axial side with respect to the stator, and expands radially inward from a first axial end of the cylindrical portion. The second plate portion is arranged on a second axial side with respect to the stator, and expands radially inward from a second axial end of the cylindrical portion. The hole penetrates at least one of the cylindrical portion, the first plate portion, and the second plate portion.

A housing for an electric machine tool, in particular for a core drill, said housing in which a motor is accommodated, which has a motor shaft for driving a tool mount and to which cooling air is supplied through at least one air guide duct, which is delimited at one end by at least one air inlet and at the other end by at least one air outlet. A guide structure, providing air guidance for the cooling air and associated with a motor mount, in which the motor is at least partially accommodated, is disposed in the air guide duct downstream from the at least one air inlet.

A personal vehicle system including a control system and at least one wheel motor coupled to the personal vehicle system and subject to control by the control system. A control system for a personal vehicle system including steps for calibrating the control system, where the control system includes a sensor system having load sensors incorporated into the personal vehicle system and also having lean forward and lean backward outputs, a user interface that prompts a user to lean forward and backward and allows a user to input a sensitivity value, and an electronic hardware component for calculating a normalization value where the wheel motor current is controlled as a function of the normalization value.

A personal vehicle system including a control system and at least one wheel motor coupled to the personal vehicle system and subject to control by the control system. A control system for a personal vehicle system including steps for calibrating the control system, where the control system includes a sensor system having load sensors incorporated into the personal vehicle system and also having lean forward and lean backward outputs, a user interface that prompts a user to lean forward and backward and allows a user to input a sensitivity value, and an electronic hardware component for calculating a normalization value where the wheel motor current is controlled as a function of the normalization value.

A linear motor unit includes at least one first linear motor in which an armature is disposed spaced from a shaft guide supporting section which is provided at a distal end of a frame, and a shaft guide is disposed on a proximal side of the shaft guide supporting section; and at least one second linear motor in which an armature is disposed in contact with the proximal side the shaft guide supporting section which is provided at the distal end of the frame, and the shaft guide is disposed on the distal side of the shaft guide supporting section, wherein the first linear motors and the second linear motors are alternatively arranged in a width direction of the frame with the respective shaft guides of the linear motors aligned with each other, the shaft guide is rotated by a rotary motor.

A linear motor unit includes at least one first linear motor in which an armature is disposed spaced from a shaft guide supporting section which is provided at a distal end of a frame, and a shaft guide is disposed on a proximal side of the shaft guide supporting section; and at least one second linear motor in which an armature is disposed in contact with the proximal side the shaft guide supporting section which is provided at the distal end of the frame, and the shaft guide is disposed on the distal side of the shaft guide supporting section, wherein the first linear motors and the second linear motors are alternatively arranged in a width direction of the frame with the respective shaft guides of the linear motors aligned with each other, the shaft guide is rotated by a rotary motor.

In a driving apparatus having a casing 10A in which an electric motor 16 is housed, the driving apparatus further has: a rotating shaft 27 through which a torque of the electric motor 16 is transmitted, the rotating shaft 27 being formed with a worm 40; a worm wheel 41 which is disposed in the casing 10A, the worm wheel 41 having a worm gear 42 which is engaged with the worm 40; a terminal holder 31 which is disposed in the casing 10A, and which supports a terminal carrying a current to be supplied to the electric motor 16; and an air hole 78 which extends so as to penetrate the casing 10A, an inside of the casing 10A and an outside of the casing 10A communicating with each other through the air hole 78, wherein in a plan view perpendicular to an axis C1 serving as a rotation center of the worm wheel 41, the air hole 78 is disposed in an area defined by projection of an area occupied by the terminal holder 31 in a direction along an axis B1, and between the electric motor and an engaging part E1 of the worm 40 with the worm gear 42.

In a driving apparatus having a casing 10A in which an electric motor 16 is housed, the driving apparatus further has: a rotating shaft 27 through which a torque of the electric motor 16 is transmitted, the rotating shaft 27 being formed with a worm 40; a worm wheel 41 which is disposed in the casing 10A, the worm wheel 41 having a worm gear 42 which is engaged with the worm 40; a terminal holder 31 which is disposed in the casing 10A, and which supports a terminal carrying a current to be supplied to the electric motor 16; and an air hole 78 which extends so as to penetrate the casing 10A, an inside of the casing 10A and an outside of the casing 10A communicating with each other through the air hole 78, wherein in a plan view perpendicular to an axis C1 serving as a rotation center of the worm wheel 41, the air hole 78 is disposed in an area defined by projection of an area occupied by the terminal holder 31 in a direction along an axis B1, and between the electric motor and an engaging part E1 of the worm 40 with the worm gear 42.

The present disclosure relates generally to a propulsion system for an elevator having a first motor portion mounted to one of an object to be moved and a stationary structure and a second motor portion mounted to the other of the object to be moved and the stationary structure, the first motor portion having at least one coil.