A motor includes a stator unit and a rotor rotatable relative to the stator unit. The stator unit includes a stator, a resin portion, a support portion, and an annular recess. The stator includes a stator core, an insulator, and a conducting wire wound around the stator core with the insulator interposed therebetween. The resin portion covers at least part of the stator. The support portion supports the stator. At an end portion of the stator unit on one side in an axial direction, the recess is recessed toward another side in the axial direction. The resin portion is positioned further in a radially outer direction than the recess. The rotor includes an annular projection extending toward the other side in the axial direction. At least part of the projection is accommodated in the recess.

A first vacuum motor includes a first pivoting shaft member, a bearing that rotatably supports the first pivoting shaft member, a disk disposed to be rotatable together with the first pivoting shaft member and having slits, a first bracket that is made of a non-magnetic material and supports the bearing, a recess formed in the first bracket to be dented in the axial direction, and a sensor unit disposed to face the disk in the axial direction via a thin wall formed by the recess. By the thin wall, the space where the sensor unit is disposed under the atmospheric pressure is isolated from the space where the disk is disposed under a reduced pressure lower than the atmospheric pressure.

A fan that is able to display an advertisement or other visible message includes a stator assembly, a rotating assembly, and a decoration member. The stator assembly includes a base, a fixing shaft, and a stator. The fixing shaft is positioned at the base. The stator is annular and positioned outside the fixing shaft. The rotating assembly is sleeved on the fixing shaft. The decoration member is fixedly connected to one end of the fixing shaft away from the base. The stator drives the rotating assembly to rotate around the fixing shaft while the stationary decoration member carries the display.

A motor apparatus having a rotor that includes one or more permanent magnets disposed in ring-like manner, wherein similar poles of adjacent magnets face one another, and further wherein a gear mechanism (e.g., a toothed ring) is configured to transfer rotation from the rotor to an external gear mechanism. The motor may also include a stator comprising one or more solenoids and a bearing assembly that includes a rotating bearing element integrated with a toothed element for engaging with a gear and axle assembly. The rotating bearing element and integrated toothed gear element may pass through cavities of the main solenoids and provide for minimal cavity size, improving motor efficiencies.

A drive module for a motor vehicle includes a housing, an electric machine, a rotor carrier, and an angular position sensor. The electric machine is for generating a drive torque and includes a rotor. The rotor carrier is connected substantially rotationally fixed to the rotor and mounted such that it can be rotated at least radially. The angular position sensor is for measuring an angular position of the rotor carrier. The angular position sensor is arranged such that the angular position of the rotor carrier or a first component substantially rotationally fixed to the rotor carrier can be detected by the angular position sensor in relation to a second component fixed to the housing.

A motor-transmission arrangement for an adjusting device for adjusting two components adjustable relative to each other can include a planetary gear system having a planetary carrier, a planetary gear with planetary gear toothing and which is rotatably mounted in the planetary carrier and with a ring gear with an internal toothing which engages with the planetary gear toothing. An electric motor can have a motor shaft which can be rotated about a motor shaft axis, which shaft interacts with the planetary gear system, and a housing which is closed with first and second housing covers in which the motor shaft is mounted via a first bearing section and a second bearing section.

A brushless motor capable of accurately detecting magnetism and securing rigidity of a center piece is provided. A brushless motor (10) includes; a stator (12); a rotor (14) having a rotor magnet (22) arranged radially outward of the stator (12); a metal center piece (18) that has a plate-like portion (38) disposed opposing the stator (12) at one side in an axial direction of the stator (12), and holds the stator (12); a control board (42) disposed at an opposite side from the stator (12) with respect to the plate-like portion (38), and provided with a magnetic detection sensor (46); a magnetic induction member (68) extending from a side of the rotor magnet (22) to a side of the magnetic detection sensor (46); and a resin-made connector member (44) that holds a connector terminal (62) connected to the control board (42), holds the magnetic induction member (68), and is fixed to the center piece (18).

The invention relates to a drive device (1) having an annular stator unit (10), an annular rotor unit (30) and a base plate (50). The stator unit (10) has at least three coils (11) having coil cores (12) and coil bobbins (13). The rotor unit (30) has a bearing unit (31), the coils (11) forming a receiving space (14) in the stator unit (10). According to the invention, the coil cores (12) and the bearing unit (31) stand on the base plate (50). The invention also relates to a spin window (100) having such a drive device (1), a pane (110) being arranged on the rotor unit (30).

Disclosed is an electronic motor with two bearings. The motor is structured so that, when loaded, the majority of the load (e.g., a radial load) is borne by one of the bearings. The bearing that bears a greater load may be larger and, thus, better suited for a heavy load. In some embodiments, the larger bearing may include rolling elements that have respective radii larger than respective radii of rolling elements of the other bearing by a ratio of at least 1.5 (150%). In some embodiments, the larger bearing may have an outer race with a radius that is greater than a radius of the outer race of the smaller bearing by a ratio of at least 1.5. In some embodiments, the motors may include a third bearing between the two bearings. The third bearing may reduce vibration in the motor.

An electric motor including a structure that prevents intrusion of a foreign substance into the electric motor, and a machine tool including the electric motor. A hollow tube that fluidly connects an inner portion of a terminal box and an outer surface of a front flange is provided, and a through hole extending from the outer surface to a front space is formed. The inner portion of the terminal box and the front space communicate with each other through a flow path that is fluidly cut off from an interior space of the machine or other such machine tool and air in the terminal box automatically flows into the front space through the flow path in accordance with rotation of a rotor as described above. Also, the terminal box is fluidly connected with an amplifier provided outside of the machine through an air passage.